STM32F101C8中文资料

stm32f103c8t6中文手册STM32F103系列微处理器，STM32F103器件* * STM32F103 * * Cortex-M3内核，CPU速度为72 MHz，最大闪存为1 MB。

包括电机控制外设和USB全速接口。

STM32系列臂式Cortex-M3 32位闪存微控制器具有低功耗，低电压，出色的性能和实时功能。

包类型系列适用于您的嵌入式应用程序。

MCU体系结构具有易于使用的STM32平台，适用于包括电机驱动，PC和游戏，HVAC以及工业应用在内的应用。

32位RISC引脚对引脚软件兼容的SRAM 高达96 KB 闪存高达1MB电源：2 V至3.6 V温度范围：-40至+ 85°C或-40至+ 105°C?stm32f1系列32位臂？皮质？-M3微控制器，意法半导体的STM32闪存微控制器。

STM32系列是基于ARM cortex Gamma M3的核心突破-嵌入式应用程序特殊开发的核心。

STM32系列受益于对Cortex-M3体系结构的增强，其中包括thumb-2指令集，该指令集提供了更高的性能，更好的编码密度，更快的中断响应以及所有领先的工业功耗。

出色的实时性能，出色的效率和新的外围设备，最大限度地提高了串行引脚，外围设备和软件兼容性之间的集成Stm32f103c8t6是中密度性能线，配备了Arm Cortex-M3 32位微控制器和48通道LQFP 封装。

它结合了高性能RISC内核，72MHz的工作频率，高速嵌入式存储器，增强的I / O范围以及与两条APB总线的外部连接。

Stm32f103c8t6具有12位ADC，计时器，PWM计时器，标准和高级通信接口。

全面的省电模式使设计人员能够设计低功耗应用。

工作电压范围：2V至3.6v.64k字节闪存。

20K字节SRAM.CRC 计算单元，96位唯一ID。

两个12位，1μs ADC（最多10个通道）。

7通道DMA控制器，3个通用定时器和1个高级控制定时器。

23 串行外设接口(SPI)小容量产品是指闪存存储器容量在16K 至32K 字节之间的STM32F101xx、STM32F102xx和STM32F103xx微控制器。

中容量产品是指闪存存储器容量在64K至128K字节之间的STM32F101xx、STM32F102xx 和STM32F103xx微控制器。

大容量产品是指闪存存储器容量在256K至512K字节之间的STM32F101xx和STM32F103xx微控制器。

互联型产品是指STM32F105xx和STM32F107xx微控制器。

除非特别说明，本章描述的模块适用于整个STM32F10xxx微控制器系列。

23.1 SPI简介在大容量产品和互联型产品上，SPI接口可以配置为支持SPI协议或者支持I2S音频协议。

SPI接口默认工作在SPI方式，可以通过软件把功能从SPI模式切换到I2S模式。

在小容量和中容量产品上，不支持I2S音频协议。

串行外设接口(SPI)允许芯片与外部设备以半/全双工、同步、串行方式通信。

此接口可以被配置成主模式，并为外部从设备提供通信时钟(SCK)。

接口还能以多主配置方式工作。

它可用于多种用途，包括使用一条双向数据线的双线单工同步传输，还可使用CRC校验的可靠通信。

I2S也是一种3引脚的同步串行接口通讯协议。

它支持四种音频标准，包括飞利浦I2S标准，MSB 和LSB对齐标准，以及PCM标准。

它在半双工通讯中，可以工作在主和从2种模式下。

当它作为主设备时，通过接口向外部的从设备提供时钟信号。

警告：由于SPI3/I2S3 的部分引脚与JTAG 引脚共享(SPI3_NSS/I2S3_WS 与JTDI ，SPI3_SCK/I2S3_CK与JTDO)，因此这些引脚不受IO控制器控制，他们(在每次复位后) 被默认保留为JTAG用途。

如果用户想把引脚配置给SPI3/I2S3，必须(在调试时)关闭JTAG并切换至SWD接口，或者(在标准应用时)同时关闭JTAG和SWD接口。

stm32f103c8t6中文参数1.简介本文档将介绍ST M32F103C8T6微控制器的中文参数。

S T M32F103C8T6是一款基于AR MC or tex-M3内核的高性能微控制器，具有丰富的外设和低功耗特性。

本文将详细介绍其主要技术参数和特性。

2.技术参数S T M32F103C8T6的主要技术参数如下：-核心：AR M32位Cor t ex-M3C PU-频率：最高工作频率为72MH z-存储器：64K BF la sh存储器，20K BR AM-时钟：内部高精度8M Hz RC振荡器，外部时钟输入支持-通信接口：2个SP I接口，3个I2C接口，2个UA RT接口，1个U S B接口-A DC：12位模数转换器，最多16个通道-P WM：16路输出-G PI O：最多37个通用I/O引脚-供电电压：3.3V3.特性3.1高性能S T M32F103C8T6的A R MC or te x-M3处理器提供高性能的计算能力和快速响应速度。

其最高工作频率为72M Hz，可以满足大部分应用的需求。

3.2丰富的外设该微控制器配备了多种外设，包括SP I、I2C、UA RT和U SB接口，可以方便地与其他设备进行通信。

同时，内部集成了12位模数转换器，可以实现精确的模拟信号采集。

3.3低功耗特性S T M32F103C8T6具备低功耗特性，可满足对功耗敏感的应用需求。

其内部集成了8MH zR C振荡器，可以有效减少功耗，并支持外部时钟输入。

3.4强大的G P I O该微控制器拥有最多37个通用I/O引脚，可以灵活地实现各种输入输出功能。

G PI O引脚具备多种工作模式和中断功能，适用于各种应用场景。

4.应用领域由于ST M32F103C8T6具备高性能、丰富的外设和低功耗特性，它在各种领域都有广泛的应用，包括但不限于：-工业自动化控制系统-智能家居系统-医疗仪器设备-汽车电子控制系统-智能电源管理系统-物联网终端设备5.总结本文对S TM32F103C8T6微控制器的中文参数进行了详细介绍。

Open051C User ManualContentsOPEN051C USER MANUAL (1)1.OVERVIEW (2)1.1.W HAT’S ON BOARD (2)2.DEMO (4)2.1.8I OS (5)2.2.ADC+DMA (5)2.3.DAC+DMA (6)2.4.GPIO_LED (7)2.5.GPIO_LED_KEY (7)2.6.I2C (7)2.7.I2S UDA1380&SD_FATFS (8)2.8.JOYSTICK (8)2.9.LCD22 (8)2.10.LCD22-T OUCH (9)2.11.FATFS V0.08A-SD C ARD (10)2.12.NRF24L01 (10)2.13.O NE-W IRE (11)2.14.PS2 (11)2.15.RTC (12)2.16.SPI (12)2.17.U COS II (13)ART (13)3.REVISION HISTORY (14)1. Overview 1.1. What’s on board[ MCU ]1. STM32F051C8T6the high performance STM32 MCU which features：Core：Cortex-M0 32-bit RISC；Operating Frequency：48MHz；Operating Voltage：2-3.6V；Package：LQFP48；I/Os: 39;Memories：64KB Flash, 8kB RAM;Communication Interfaces: 2 x SPI, 2 x USART, 2 x I2C, 1 x I2S;[ Component ]3. Power supply switch5V DC or USB4. Power indicator5. User LEDfor indicating I/O status6. Reset key7. User LEDfor I/O input and/or interact with running code 8. Joystickfive positionAD & DA converters ： 1 x AD (12-bit, 1μs, shares 16 channels);Debugging/Programming ： supports SWD (serial wire debug) interfaces, supports IAP2. AMS1117-3.33.3V voltage regulator[ Interface ]11. 8I/Os + DAC + ADC Interfaceeasily connects to keypad, motor, etc. 12. SPI1 / SPI2 interfaceeasily connects to SPI peripherals such as FLASH (AT45DBxx), SD card, MP3, etc.convenient for connecting AD module, thanks to the SPI1 alternative AD function 13. I2C1 / I2C2 interfaceeasily connects to I2C peripherals such as I/O expander (PCF8574), EEPROM (AT24Cxx), etc.14. LCD interfaceeasily connects to the touch screen LCD 15. ONE-WIRE interfaceeasily connects to ONE-WIRE devices (TO-92 package), such as temperature sensor (DS18B20), electronic registration number (DS2401), etc. 16. USART1 interfaceeasily connects to RS232, RS485, USB TO 232 17. USART2 interfaceeasily connects to RS232, RS485, USB TO 232 18. I2S / I2C1 interfaceeasily connects to I2S peripherals such as audio module, etc. 19. PS/2 interfacefor connecting PS/2 keyboard/mouse.9. 32.768K crystal oscillatorused for internal RTC, also supports clock calibration10. 8M crystal oscillatorenables the MCU run at 48M frequency by frequency multiplication[ Other interfaces ]20. 5V DC jack21. 5V/3.3 V power input/outputusually used for power output, or common ground with other user board 22. MCU pins connectorall the MCU pins are accessible on expansion connectors for further expansion 23. SWD interfacefor debugging/programming[Jumper/switch]20. Boot mode selectionfor configuring the BOOT0 pins 21. User key jumpershort the jumper to connect the user key to I/Os used in example codeopen the jumper to connect the user key to other custom pins via jumper wires 22. Joystick jumpershort the jumper to connect the joystick to I/Os used in example codeopen the jumper to connect the joystick to other custom pins via jumper wires 23. PS/2 interface jumperI/O ；short the jumper to connect the PS/2 interface to I/Os used in example codeopen the jumper to connect the PS/2 interface to other custom pins via jumper wires 24. VBAT selection jumpershort the jumper to use system power supply open the jumper to connect the VBAT to external power, such as battery2. DemoKEIL MDK Version：4.54Programmer/Debugger: ULINK/V2Programming/Debugging interface: SWD Serial port settings:Select a proper COM portBaud rate 115200Data bits 8Stop bits 1Parity bits NoneFlow control None2.1. 8Ios◆ Overview8bit I/Os demo◆ Hardware connectionConnect the board to 5V power via 5VDCinterfaceConnect the ULINK board to the board via SWDinterfaceConnect the 8 Push Button to the board via8I/Os+DAC+DAC interface (The G pin on the module connect to the GND pin on the board) USART1 Connect a serial portconverter(RS232) to the board via UART1 interface◆ Operation and resultThe below information will be printed on the serial debugging assistant:2.2. ADC+DMA◆ OverviewADC analog voltage acquisition demo◆Hardware connectionConnect the board to 5V power via 5VDCinterfaceConnect the ULINK2 board to the board viaSWD interfaceConnect a serial port converter(RS232) to the board via UART1 interfaceConnect the Analog Test Board to the boardvia 8I/Os+DAC+DAC interface◆ Operation and resultRotate the potentiometer on the Analog Test Board, the below information will be printed on the serialdebugging assistant:2.3. DAC+DMA◆ OverviewDAC demo◆ Hardware connectionConnect the board to 5V power via 5VDCinterfaceConnect the ULINK2 board to the board viaSWD interfaceConnect the Analog Test Board to the board via 8I/Os+DAC+DAC interfaceConnect the 5V pin headers on both the mainboard and the Analog Test Board via jumper wire◆ Operation and resultYou should hear sound from the Analog Test Board.2.4. GPIO_LED◆OverviewGPIO_LED demo◆Operation and resultShort the LED JMP◆Operation and resultThe LED blinking2.5. GPIO_LED _KEY◆OverviewLED, joystick demo◆Hardware connectionShort the LED JMP◆Operation and resultPush the joystick, the LED status should keep changing accordingly.2.6. I2C◆OverviewI2C EEPROM demo◆Hardware connectioninterfaceConnect the ULINK2 board to the board viaSWD interfaceConnect a serial port converter to the boardvia UART1 interfaceConnect the AT24CXX EEPROM Board tothe board via I2CX interface( connect toI2C1 or I2C2 depends on the program)◆Operation and resultThe below information will be printed on the serial debugging assistant:2.7. I2S UDA1380 & SD_FATFS◆ OverviewAudio file placed on SD Card (with FATFS) ◆ Hardware connectionConnect the board to 5V power via 5VDCinterfaceConnect the ULINK2 board to the board viaSWD interfaceConnect the UDA1380 Board to theonboard I2S interfaceConnect an earphone to theUDA1380Board LINEOUT interfaceConnect the Micro SD Storage Board (withSD card) to the onboard SPI2 interfaceConnect the CD pin on the Micro SDStorage Board to the onboard PB0 pin using a jumper wire.◆ Operation and resultThe below information will be printed on the serial debugging assistant:2.8. JOYSTICK◆ OverviewJoystick demo◆ Hardware connectionShort the LED JMP ，JOYSTICK JMP ，KEY JMP . ◆ Operation and resultPush the joystick or the keys, the LED status should keep changing accordingly.2.9. LCD22◆ OverviewLCD demo◆Hardware connectionConnect the board to 5V power via 5VDC interface Connect the ULINK2 board to the board via SWDinterfaceConnect the "2.2inch 320x240 Touch LCD (A)" to theboard.◆ Operation and resultDisplay image on the LCD2.10. LCD22-Touch◆ OverviewLCD demo◆ Hardware connectionConnect the board to 5V power via 5VDC interfaceConnect the ULINK2 board to the board via SWD interface Connect the "2.2inch 320x240 Touch LCD (A)" to the board.◆ Operation and resultDisplay image on the LCDMessage will be displayed on the LCD◆ ApplicationHandheld device display2.11. FATFS V0.08A-SD Card◆ OverviewSD_FatFS demo ◆ Hardware connectionConnect the board to 5V power via 5VDCinterfaceConnect the ULINK2 board to the board viaSWD interfaceConnect a serial port converter to the board viaUART1Connect the Micro SD Storage Board (with SDcard) to the board via SPI2 interfaceConnect the CD pin on the Micro SD StorageBoard to the onboard PB0 pin using a jumper wire.◆ Software configuration ◆ Operation and resultThe below information will be printed on the serial debugging assistant:2.12. NRF24L01◆ OverviewNRF24L01 demo ◆ Hardware connectionConnect the board to 5V power via 5VDCinterfaceConnect the ULINK2 board to the board viaSWD interfaceConnect the ULINK2 board to the board viaSWD interfaceConnect the NRF24L01 Board to the boardvia SPI interface◆ Software configurationDownload the transmitting and receiving program to the two NRF24L01 board respectively. ◆ Operation and resultMessage will be printed on the serial debugging assistant.2.13. One-Wire◆ OverviewOne-wire demo◆ Hardware connectionConnect the board to 5V power via 5VDC interfaceConnect the ULINK2 board to the board via SWD interfaceConnect a serial port converter to the onboard USART1 interface Connect the DS18B20 to the onboard One-wire socket◆ Operation and resultThe below information will be printed on the serial debugging assistant:2.14. PS2◆ OverviewPS2 keyboard demo ◆ Hardware connectionConnect the board to 5V power via 5VDCinterfaceConnect the ULINK2 board to the board viaSWD interfaceConnect the ULINK2 board to the board viaSWD interfaceConnect the PS2 keyboard to the board via PS2interface.Short the PS2 JMP .◆ Operation and resultPress keys on the PS2 keyboard, the related key value will display on the serial debugging assistant:2.15. RTC◆ OverviewRTC demo◆ Hardware connectionConnect the board to 5V power via 5VDC interfaceConnect the ULINK2 board to the board via SWD interface◆ Operation and resultThe below information will be printed on the serial debugging assistant:2.16. SPI◆ OverviewSPI demo◆ Hardware connectionConnect the board to 5V power via 5VDC interface Connect the ULINK2 board to the board via SWDinterfaceConnect the "AT45DBXX DataFlash Board" to theonboard SPIX interface (connect to SPI1 or SPI2 depends on the program)Connect a serial port converter to the onboardUSART1 interface◆ Software connectionSoftware configuration:Launch the serial debugging assistant SSCOM32, choose related COM port, set baud rate as 115200, click to open it.◆Operation and resultThe below information will be printed on the serial debugging assistant: Array2.17. Ucos II◆OverviewUcos ii demo◆Hardware connectionConnect the board to 5V power via 5VDCinterfaceConnect the board to 5V power via 5VDCinterfaceShort the LED jumper◆Operation and resultThe two LED blinking in different frequency.2.18. USART◆OverviewUSART demo◆Hardware connectionConnect the board to 5V power via 5VDC interfaceConnect the board to 5V power via 5VDC interfaceConnect a serial port converter to the onboard USARTX interface (connect to USART1 or USART2 depends on the program)◆Operation and resultThe below information will be printed on the serial debugging assistant:3. Revision historyVersion Description Date AuthorV1.0 Initial revision 2014/05/17 Waveshare team。

标题：深入探究STM32F051C8T6的串口函数使用方法近年来，嵌入式系统在各个领域中得到了广泛应用，而STM32F051C8T6作为一款强大的嵌入式微控制器，其串口功能更是应用广泛。

在本文中，我将深入探究STM32F051C8T6的串口函数使用方法，从简到繁、由浅入深地为大家详细介绍。

1. STM32F051C8T6的串口功能简介我们需要了解STM32F051C8T6的串口功能。

串口通信被广泛应用于各种嵌入式系统中，用于实现设备之间的数据传输。

而在STM32F051C8T6中，它支持多种串口通信方式，包括USART、UART等。

这些串口通信方式拥有不同的特点和应用场景，我们需要根据具体的需求选择合适的串口通信方式。

2. STM32F051C8T6的串口函数基本用法在使用STM32F051C8T6的串口功能时，我们需要熟悉其相应的串口函数。

其中，包括初始化串口、发送数据、接收数据等基本操作。

在实际应用中，我们可以通过调用相应的串口函数，轻松实现串口通信的功能，从而实现设备之间的数据传输。

3. STM32F051C8T6的串口函数高级应用除了基本的串口功能外，STM32F051C8T6还支持一些高级的串口功能。

DMA传输、中断处理等。

通过合理地利用这些高级功能，我们可以提高串口通信的效率和稳定性，从而更好地满足实际应用的需求。

4. 我对STM32F051C8T6的串口函数的个人观点和理解在我看来，STM32F051C8T6的串口功能非常强大，可以满足不同场景下的串口通信需求。

通过对串口函数的深入了解和灵活运用，我们可以更好地实现设备之间的数据传输，从而提升整个嵌入式系统的性能和稳定性。

在总结本文内容时，我们可以看到STM32F051C8T6的串口功能在嵌入式系统中具有重要的地位，其丰富的功能和灵活的使用方式，为我们实现设备之间的数据传输提供了便利。

通过本文的介绍，相信大家对于STM32F051C8T6的串口函数使用方法有了更深入的了解。

Contents STM32F103x8,STM32F103xB Contents1Introduction (9)2Description (9)2.1Device overview (10)2.2Full compatibility throughout the family (13)2.3Overview (14)2.3.1ARM®Cortex™-M3core with embedded Flash and SRAM (14)2.3.2Embedded Flash memory (14)2.3.3CRC(cyclic redundancy check)calculation unit (14)2.3.4Embedded SRAM (14)2.3.5Nested vectored interrupt controller(NVIC) (14)2.3.6External interrupt/event controller(EXTI) (15)2.3.7Clocks and startup (15)2.3.8Boot modes (15)2.3.9Power supply schemes (15)2.3.10Power supply supervisor (15)2.3.11Voltage regulator (16)2.3.12Low-power modes (16)2.3.13DMA (17)2.3.14RTC(real-time clock)and backup registers (17)2.3.15Timers and watchdogs (17)2.3.16I²C bus (19)2.3.17Universal synchronous/asynchronous receiver transmitter(USART)..192.3.18Serial peripheral interface(SPI) (19)2.3.19Controller area network(CAN) (19)2.3.20Universal serial bus(USB) (19)2.3.21GPIOs(general-purpose inputs/outputs) (20)2.3.22ADC(analog-to-digital converter) (20)2.3.23T emperature sensor (20)2.3.24Serial wire JTAG debug port(SWJ-DP) (20)3Pinouts and pin description (21)4Memory mapping (34)2/105DocID13587Rev16STM32F103x8,STM32F103xB Contents5Electrical characteristics (35)5.1Parameter conditions (35)5.1.1Minimum and maximum values (35)5.1.2Typical values (35)5.1.3Typical curves (35)5.1.4Loading capacitor (35)5.1.5Pin input voltage (35)5.1.6Power supply scheme (36)5.1.7Current consumption measurement (37)5.2Absolute maximum ratings (37)5.3Operating conditions (38)5.3.1General operating conditions (38)5.3.2Operating conditions at power-up/power-down (39)5.3.3Embedded reset and power control block characteristics (40)5.3.4Embedded reference voltage (41)5.3.5Supply current characteristics (41)5.3.6External clock source characteristics (51)5.3.7Internal clock source characteristics (55)5.3.8PLL characteristics (57)5.3.9Memory characteristics (57)5.3.10EMC characteristics (58)5.3.11Absolute maximum ratings(electrical sensitivity) (60)5.3.12I/O current injection characteristics (61)5.3.13I/O port characteristics (62)5.3.14NRST pin characteristics (68)5.3.15TIM timer characteristics (69)5.3.16Communications interfaces (70)5.3.17CAN(controller area network)interface (75)5.3.1812-bit ADC characteristics (76)5.3.19T emperature sensor characteristics (80)6Package characteristics (81)6.1Package mechanical data (81)6.2Thermal characteristics (93)6.2.1Reference document (93)6.2.2Selecting the product temperature range (94)DocID13587Rev163/105Contents STM32F103x8,STM32F103xB7Ordering information scheme (96)8Revision history (97)4/105DocID13587Rev16STM32F103x8,STM32F103xB List of tables List of tablesT able1.Device summary (1)T able2.STM32F103xx medium-density device features and peripheral counts (10)T able3.STM32F103xx family (13)T able4.Timer feature comparison (17)T able5.Medium-density STM32F103xx pin definitions (28)T able6.Voltage characteristics (37)T able7.Current characteristics (38)T able8.Thermal characteristics (38)T able9.General operating conditions (38)T able10.Operating conditions at power-up/power-down (39)T able11.Embedded reset and power control block characteristics (40)T able12.Embedded internal reference voltage (41)T able13.Maximum current consumption in Run mode,code with data processingrunning from Flash (42)T able14.Maximum current consumption in Run mode,code with data processingrunning from RAM (42)T able15.Maximum current consumption in Sleep mode,code running from Flash or RAM (44)T able16.Typical and maximum current consumptions in Stop and Standby modes (45)T able17.Typical current consumption in Run mode,code with data processingrunning from Flash (48)T able18.Typical current consumption in Sleep mode,code running from Flash orRAM (49)T able19.Peripheral current consumption (50)T able20.High-speed external user clock characteristics (51)T able21.Low-speed external user clock characteristics (51)T able22.HSE4-16MHz oscillator characteristics (53)T able23.LSE oscillator characteristics(f LSE=32.768kHz) (54)T able24.HSI oscillator characteristics (55)T able25.LSI oscillator characteristics (56)T able26.Low-power mode wakeup timings (57)T able27.PLL characteristics (57)T able28.Flash memory characteristics (57)T able29.Flash memory endurance and data retention (58)T able30.EMS characteristics (59)T able31.EMI characteristics (59)T able32.ESD absolute maximum ratings (60)T able33.Electrical sensitivities (60)T able34.I/O current injection susceptibility (61)T able35.I/O static characteristics (62)T able36.Output voltage characteristics (66)T able37.I/O AC characteristics (67)T able38.NRST pin characteristics (68)T able39.TIMx characteristics (69)T able40.I2C characteristics (70)T able41.SCL frequency(f PCLK1=36MHz.,V DD_I2C=3.3V) (71)T able42.SPI characteristics (72)T B startup time (74)T B DC electrical characteristics (75)DocID13587Rev165/105List of tables STM32F103x8,STM32F103xBT B:Full-speed electrical characteristics (75)T able46.ADC characteristics (76)T able47.R AIN max for f ADC=14MHz (77)T able48.ADC accuracy-limited test conditions (77)T able49.ADC accuracy (78)T able50.TS characteristics (80)T able51.VFQFPN366x6mm,0.5mm pitch,package mechanical data (82)T able52.UFQFPN487x7mm,0.5mm pitch,package mechanical data (83)T able53.LFBGA100-10x10mm low profile fine pitch ball grid array packagemechanical data (85)T able54.LQPF100,14x14mm100-pin low-profile quad flat package mechanical data (87)T able55.UFBGA100-ultra fine pitch ball grid array,7x7mm,0.50mm pitch,packagemechanical data (88)T able56.LQFP64,10x10mm,64-pin low-profile quad flat package mechanical data (89)T able57.TFBGA64-8x8active ball array,5x5mm,0.5mm pitch,package mechanical data (90)T able58.LQFP48,7x7mm,48-pin low-profile quad flat package mechanical data (92)T able59.Package thermal characteristics (93)T able60.Ordering information scheme (96)T able61.Document revision history (97)6/105DocID13587Rev16STM32F103x8,STM32F103xB List of figures List of figuresFigure1.STM32F103xx performance line block diagram (11)Figure2.Clock tree (12)Figure3.STM32F103xx performance line LFBGA100ballout (21)Figure4.STM32F103xx performance line LQFP100pinout (22)Figure5.STM32F103xx performance line UFBGA100pinout (23)Figure6.STM32F103xx performance line LQFP64pinout (24)Figure7.STM32F103xx performance line TFBGA64ballout (25)Figure8.STM32F103xx performance line LQFP48pinout (26)Figure9.STM32F103xx performance line UFQFPN48pinout (26)Figure10.STM32F103xx performance line VFQFPN36pinout (27)Figure11.Memory map (34)Figure12.Pin loading conditions (36)Figure13.Pin input voltage (36)Figure14.Power supply scheme (36)Figure15.Current consumption measurement scheme (37)Figure16.Typical current consumption in Run mode versus frequency(at3.6V)-code with data processing running from RAM,peripherals enabled (43)Figure17.Typical current consumption in Run mode versus frequency(at3.6V)-code with data processing running from RAM,peripherals disabled (43)Figure18.Typical current consumption on V BAT with RTC on versus temperature at differentV BAT values (45)Figure19.Typical current consumption in Stop mode with regulator in Run mode versustemperature at V DD=3.3V and3.6V (46)Figure20.Typical current consumption in Stop mode with regulator in Low-power mode versustemperature at V DD=3.3V and3.6V (46)Figure21.Typical current consumption in Standby mode versus temperature atV DD=3.3V and3.6V (47)Figure22.High-speed external clock source AC timing diagram (52)Figure23.Low-speed external clock source AC timing diagram (52)Figure24.Typical application with an8MHz crystal (53)Figure25.Typical application with a32.768kHz crystal (55)Figure26.Standard I/O input characteristics-CMOS port (64)Figure27.Standard I/O input characteristics-TTL port (64)Figure28.5V tolerant I/O input characteristics-CMOS port (65)Figure29.5V tolerant I/O input characteristics-TTL port (65)Figure30.I/O AC characteristics definition (68)Figure31.Recommended NRST pin protection (69)Figure32.I2C bus AC waveforms and measurement circuit (71)Figure33.SPI timing diagram-slave mode and CPHA=0 (73)Figure34.SPI timing diagram-slave mode and CPHA=1(1) (73)Figure35.SPI timing diagram-master mode(1) (74)B timings:definition of data signal rise and fall time (75)Figure37.ADC accuracy characteristics (78)Figure38.Typical connection diagram using the ADC (79)Figure39.Power supply and reference decoupling(V REF+not connected to V DDA) (79)Figure40.Power supply and reference decoupling(V REF+connected to V DDA) (80)Figure41.VFQFPN366x6mm,0.5mm pitch,package outline(1) (82)Figure42.VFQFPN36recommended footprint(dimensions in mm)(1)(2) (82)DocID13587Rev167/105List of figures STM32F103x8,STM32F103xBFigure43.UFQFPN487x7mm,0.5mm pitch,package outline (83)Figure44.UFQFPN48recommended footprint (84)Figure45.LFBGA100-10x10mm low profile fine pitch ball grid array packageoutline (85)Figure46.Recommended PCB design rules(0.80/0.75mm pitch BGA) (86)Figure47.LQFP100,14x14mm100-pin low-profile quad flat package outline (87)Figure48.LQFP100recommended footprint(1) (87)Figure49.UFBGA100-ultra fine pitch ball grid array,7x7mm,0.50mm pitch,package outline (88)Figure50.LQFP64,10x10mm,64-pin low-profile quad flat package outline (89)Figure51.LQFP64recommended footprint(1) (89)Figure52.TFBGA64-8x8active ball array,5x5mm,0.5mm pitch,package outline (90)Figure53.Recommended PCB design rules for pads(0.5mm pitch BGA) (91)Figure54.LQFP48,7x7mm,48-pin low-profile quad flat package outline (92)Figure55.LQFP48recommended footprint(1) (92)Figure56.LQFP100P D max vs.T A (95)8/105DocID13587Rev16STM32F103x8,STM32F103xB Introduction 1IntroductionThis datasheet provides the ordering information and mechanical device characteristics ofthe STM32F103x8and STM32F103xB medium-density performance line microcontrollers.For more details on the whole STMicroelectronics STM32F103xx family,please refer toSection2.2:Full compatibility throughout the family.The medium-density STM32F103xx datasheet should be read in conjunction with the low-,medium-and high-density STM32F10xxx reference manual.The reference and Flash programming manuals are both available from theSTMicroelectronics website .For information on the Cortex™-M3core please refer to the Cortex™-M3T echnicalReference Manual,available from the website at the following address:/help/index.jsp?topic=/com.arm.doc.ddi0337e/2DescriptionThe STM32F103xx medium-density performance line family incorporates the high-performance ARM Cortex™-M332-bit RISC core operating at a72MHz frequency,high-speed embedded memories(Flash memory up to128Kbytes and SRAM up to20Kbytes),and an extensive range of enhanced I/Os and peripherals connected to two APB buses.Alldevices offer two12-bit ADCs,three general purpose16-bit timers plus one PWM timer,aswell as standard and advanced communication interfaces:up to two I2Cs and SPIs,threeUSART s,an USB and a CAN.The devices operate from a2.0to3.6V power supply.They are available in both the–40to+85°C temperature range and the–40to+105°C extended temperature range.Acomprehensive set of power-saving mode allows the design of low-power applications.The STM32F103xx medium-density performance line family includes devices in six differentpackage types:from36pins to100pins.Depending on the device chosen,different sets ofperipherals are included,the description below gives an overview of the complete range ofperipherals proposed in this family.These features make the STM32F103xx medium-density performance line microcontrollerfamily suitable for a wide range of applications such as motor drives,application control,medical and handheld equipment,PC and gaming peripherals,GPS platforms,industrialapplications,PLCs,inverters,printers,scanners,alarm systems,video intercoms,andHVACs.DocID13587Rev169/105TimersCommunicationDescription STM32F103x8,STM32F103xB 2.1Device overviewTable2.STM32F103xx medium-density device features and peripheral1.On the TFBGA64package only15channels are available(one analog input pin has been replaced by‘Vref+’).10/105DocID13587Rev16Peripheral STM32F103Tx STM32F103Cx STM32F103Rx STM32F103Vx Flash-Kbytes64128641286412864128SRAM-Kbytes20202020 General-purpose3333Advanced-control1111SPI12222I C1222USART2333USB1111CAN1111 GPIOs2637518012-bit synchronized ADCNumber of channels210channels210channels2(1)16channels216channels CPU frequency72MHzOperating voltage 2.0to3.6VOperating temperaturesAmbient temperatures:-40to+85°C/-40to+105°C(see Table9)Junction temperature:-40to+125°C(see Table9)Packages VFQFPN36LQFP48,UFQFPN48LQFP64,TFBGA64LQFP100,LFBGA100,UFBGA100f l a s ho b lI n t e r f a c eB u s M a t r i xA HB :F m a x =48/72M H zA PB 2:F m a x =48/72M H zA PB 1:F m a x =24/36M H zpbusPCLK2 HCLK CLOCK RTC AWUTAMPER -RTCSTM32F103x8, STM32F103xBDescriptionFigure 1. STM32F103xx performance line block diagramTRACECLKTRACED[0:3] as ASNJTRSTTRSTJTDIJTCK/SWCLK JTMS/SWDIOJTDO as AFTPIUTrace/trigSW/JTAGCortex -M3 CPUIbusF max : 7 2M Hz DbusTraceControlle rFlash 128 KB64 bitPOWERVOLT. REG. 3.3V TO 1.8V@VDDV DD = 2 to 3.6VV SSNVICSystemSRAM20 KB@VDDGP DMA7 channelsPCLK1 FCLKPLL &MANAGTXTAL OSC4-16 MHzOSC_INOSC_OUTRC 8 MHzNRST @VDDASUPPLYSUPERVISIONRC 40 kHz @VDDA@VBATIWDG Standby interfaceV BATVDDA VSSA 80AF PA[15:0] PB[15:0]POR / PDRPVDEXTIWAKEUPGPIOAGPIOBRstIntAHB2 AHB2APB2 APB1XTAL 32 kHzBackup reg Backu p i nterf ace TIM2 TIM3OSC32_IN OSC32_OUT4 Channels 4 ChannelsPC[15:0]GPIOCTIM 44 ChannelsPD[15:0]GPIOD PE[15:0] GPIOEUSART2USART3RX,TX, CTS, RTS,CK, SmartCard as AFRX,TX, CTS, RTS, CK, SmartCard as AF4 Channels3 compl. ChannelsETR and BKINMOSI,MISO, SCK,NSS as AFRX,TX, CTS, RTS,TIM1SPI12x(8x16bit)SPI2I2C1 I2C2MOSI,MISO,SCK,NSS as AFSCL,SDA,SMBA as AFSCL,SDA as AFSmartCard as AFUSART1@VDDAbxCANUSBDP/CAN_TXUSB 2.0 FSUSBDM/CAN_RX16AF V REF+ V REF -12bit ADC1 IF12bit ADC2 IFSRAM 512BWWDGTemp sensorai14390d1. T A = –40 °C to +105 °C (junction temperature up to 125 °C).2. AF = alternate function on I/O port pin.DocID13587 Rev 1611/105peripheralsIf (APB2 prescaler =1) x1 ADC /2, 4, 6, 8 ADCCLKDescriptionSTM32F103x8, STM32F103xBFigure 2. Clock treeFLITFCLKto Flash programming interface8 MHz HSI RCHSIUSBPrescaler 48 MHzUSBCLKto USB interface/2/1, 1.572 MHz maxClockHCLKto AHB bus, core, memory and DMA PLLSRCSWPLLMUL/8Enable (3 bits)to Cortex System timerFCLK Cortex..., x16 x2, x3, x4 PLLHSIPLLCLK HSESYSCLK72 MHz max AHB Prescaler /1, 2..512 APB1Prescaler/1, 2, 4, 8, 16free running clock36 MHz max PCLK1to APB1Peripheral Clock Enable (13 bits)TIM2,3, 4to TIM2, 3and 4CSSIf (APB1 prescaler =1) x1 TIMXCLKelse x2 Peripheral ClockEnable (3 bits)OSC_OUTOSC_IN4-16 MHzHSE OSCPLLXTPRE/2APB2Prescaler/1, 2, 4, 8, 16TIM1 timer 72 MHz maxPeripheral ClockEnable (11 bits) PCLK2peripherals to APB2to TIM1 TIM1CLK else x2 Peripheral ClockOSC32_INOSC32_OUTLSE OSC32.768 kHz/128LSERTCCLKto RTCPrescaler Enable (1 bit) to ADCRTCSEL[1:0]LSI RCLSIto Independent Watchdog (IWDG)40 kHzIWDGCLKLegend:HSE = high -speed external clock signalHSI = high -speed internal clock signalMCOMainClock Output/2PLLCLKHSI LSI = low -speed internal clock signal LSE = low -speed external clock signalHSESYSCLKMCOai149031. When the HSI is used as a PLL clock input, the maximum system clock frequency that can be achieved is 64 MHz.2. For the USB function to be available, both HSE and PLL must be enabled, with USBCLK running at 48 MHz.3. To have an ADC conversion time of 1 µs, APB2 must be at 14 MHz, 28 MHz or 56 MHz.12/105DocID13587 Rev 16STM32F103x8, STM32F103xBDescription2.2 Full compatibility throughout the familyThe STM32F103xx is a complete family whose members are fully pin -to -pin, software and feature compatible. In the reference manual, the STM32F103x4 and STM32F103x6 are identified as low -density devices, the STM32F103x8 and STM32F103xB are referred to as medium -density devices, and the STM32F103xC, STM32F103xD and STM32F103xE are referred to as high -density devices.Low - and high -density devices are an extension of the STM32F103x8/B devices, they are specified in the STM32F103x4/6 and STM32F103xC/D/E datasheets, respectively. Low - density devices feature lower Flash memory and RAM capacities, less timers and peripherals. High -density devices have higher Flash memory and RAM capacities, and additional peripherals like SDIO, FSMC, I 2S and DAC, while remaining fully compatible with the other members of the STM32F103xx family .The STM32F103x4, STM32F103x6, STM32F103xC, STM32F103xD and STM32F103xE are a drop -in replacement for STM32F103x8/B medium -density devices, allowing the user to try different memory densities and providing a greater degree of freedom during the development cycle.Moreover, the STM32F103xx performance line family is fully compatible with all existing STM32F101xx access line and STM32F102xx USB access line devices.1.For orderable part numbers that do not show the A internal code after the temperature range code (6 or 7),the reference datasheet for electrical characteristics is that of the STM32F103x8/B medium -density devices.DocID13587 Rev 16 13/105PinoutLow -density devicesMedium -density devices High -density devices 16 KB Flash 32 KB Flash (1) 64 KB Flash 128 KB Flash 256 KB Flash 384 KB Flash 512 KB Flash6 KB RAM 10 KB RAM 20 KB RAM 20 KB RAM 48 KB RAM 64 KB RAM 64 KB RAM144 5 × USART s 4 × 16-bit timers, 2 × basic timers2 3 × SPIs, 2 × I Ss, 2 × I2Cs USB, CAN, 2 × PWM timers 3 × ADCs, 2 × DACs, 1 × SDIOFSMC (100 and 144 pins) 100 3 × USART s 3 × 16-bit timers 2 2 × SPIs, 2 × I Cs, USB, CAN, 1 × PWM timer2 × ADCs 64 2 × USART s 2 × 16-bit timers 2 1 × SPI, 1 × I C, USB, CAN, 1 × PWM timer 2 × ADCs 48 36Description STM32F103x8,STM32F103xB 2.3Overview2.3.1ARM®Cortex™-M3core with embedded Flash and SRAMThe ARM Cortex™-M3processor is the latest generation of ARM processors for embeddedsystems.It has been developed to provide a low-cost platform that meets the needs of MCUimplementation,with a reduced pin count and low-power consumption,while deliveringoutstanding computational performance and an advanced system response to interrupts.The ARM Cortex™-M332-bit RISC processor features exceptional code-efficiency,delivering the high-performance expected from an ARM core in the memory size usuallyassociated with8-and16-bit devices.The STM32F103xx performance line family having an embedded ARM core,is thereforecompatible with all ARM tools and software.Figure1shows the general block diagram of the device family.2.3.2Embedded Flash memory64or128Kbytes of embedded Flash is available for storing programs and data.2.3.3CRC(cyclic redundancy check)calculation unitThe CRC(cyclic redundancy check)calculation unit is used to get a CRC code from a32-bitdata word and a fixed generator polynomial.Among other applications,CRC-based techniques are used to verify data transmission orstorage integrity.In the scope of the EN/IEC60335-1standard,they offer a means ofverifying the Flash memory integrity.The CRC calculation unit helps compute a signature ofthe software during runtime,to be compared with a reference signature generated at link-time and stored at a given memory location.2.3.4Embedded SRAMTwenty Kbytes of embedded SRAM accessed(read/write)at CPU clock speed with0waitstates.2.3.5Nested vectored interrupt controller(NVIC)The STM32F103xx performance line embeds a nested vectored interrupt controller able tohandle up to43maskable interrupt channels(not including the16interrupt lines ofCortex™-M3)and16priority levels.•Closely coupled NVIC gives low-latency interrupt processing•Interrupt entry vector table address passed directly to the core•Closely coupled NVIC core interface•Allows early processing of interrupts•Processing of late arriving higher priority interrupts•Support for tail-chaining•Processor state automatically saved•Interrupt entry restored on interrupt exit with no instruction overhead14/105DocID13587Rev16万联芯城专注电子元器件配单服务，只售原装现货库存，万联芯城电子元器件全国供应，专为终端生产，研发企业提供现货物料，价格优势明显，BOM配单采购可节省逐个搜索购买环节，只需提交BOM物料清单，商城即可为您报价，解决客户采购烦恼，为客户节省采购成本，点击进入万联芯城。

STM32F10xxx参考手册参考手册小，中和大容量的STM32F101xx, STM32F102xx和STM32F103xxARM内核32位高性能微控制器导言本参考手册针对应用开发，提供关于如何使用小容量、中容量和大容量的STM32F101xx、STM32F102xx或者STM32F103xx微控制器的存储器和外设的详细信息。

在本参考手册中STM32F101xx、STM32F102xx和STM32F103xx被统称为STM32F10xxx。

STM32F10xxx系列拥有不同的存储器容量，封装和外设配置。

关于订货编号、电气和物理性能参数，请参考STM32F101xx、STM32F102xx和STM32F103xx 的数据手册。

关于芯片内部闪存的编程，擦除和保护操作，请参考STM32F10xxx闪存编程手册。

关于ARM Cortex™-M3内核的具体信息，请参考Cortex™-M3技术参考手册。

相关文档● Cortex™-M3技术参考手册，可按下述链接下载：/help/topic/com.arm.doc.ddi0337e/DDI0337E_cortex_m3_r1p1_trm.pdf下述文档可在ST网站下载(/mcu/)：● STM32F101xx、STM32F102xx和STM32F103xx的数据手册。

● STM32F10xxx闪存编程手册。

* 感谢南京万利提供原始翻译文档目录1文中的缩写 161.1寄存器描述表中使用的缩写列表 161.2术语表161.3可用的外设16 2存储器和总线构架 172.1系统构架172.2存储器组织182.3存储器映像192.3.1嵌入式SRAM 202.3.2位段202.3.3嵌入式闪存 212.4启动配置23 3CRC计算单元(CRC) 253.1CRC简介253.2CRC主要特性253.3CRC功能描述253.4CRC寄存器263.4.1数据寄存器(CRC_DR) 263.4.2独立数据寄存器(CRC_IDR) 263.4.3控制寄存器(CRC_CR) 273.4.4CRC寄存器映像 27 4电源控制(PWR) 284.1电源284.1.1独立的A/D转换器供电和参考电压 284.1.2电池备份区域 294.1.3电压调节器 294.2电源管理器294.2.1上电复位(POR)和掉电复位(PDR) 294.2.2可编程电压监测器(PVD) 304.3低功耗模式304.3.1降低系统时钟 314.3.2外部时钟的控制 314.3.3睡眠模式 314.3.4停止模式 324.3.5待机模式 334.3.6低功耗模式下的自动唤醒(AWU) 344.4电源控制寄存器 354.4.1电源控制寄存器(PWR_CR) 354.4.2电源控制/状态寄存器 364.4.3PWR寄存器地址映像 37 5备份寄存器(BKP) 385.1BKP简介385.2BKP特性385.3BKP功能描述385.3.1侵入检测 385.3.2RTC校准 395.4BKP寄存器描述 395.4.1备份数据寄存器x(BKP_DRx) (x = 1 … 10) 395.4.2RTC时钟校准寄存器(BKP_RTCCR) 395.4.3备份控制寄存器(BKP_CR) 405.4.4备份控制/状态寄存器(BKP_CSR) 405.4.5BKP寄存器映像 42 6复位和时钟控制(RCC) 456.1复位456.1.1系统复位 456.1.2电源复位 456.1.3备份域复位 466.2时钟466.2.1HSE时钟 486.2.2HSI时钟 486.2.3PLL 496.2.4LSE时钟 496.2.5LSI时钟496.2.6系统时钟(SYSCLK)选择 506.2.7时钟安全系统(CSS) 506.2.8RTC时钟 506.2.9看门狗时钟 506.2.10时钟输出 506.3RCC寄存器描述 516.3.1时钟控制寄存器(RCC_CR) 516.3.2时钟配置寄存器(RCC_CFGR) 526.3.3时钟中断寄存器 (RCC_CIR) 546.3.4APB2外设复位寄存器 (RCC_APB2RSTR) 566.3.5APB1外设复位寄存器 (RCC_APB1RSTR) 586.3.6AHB外设时钟使能寄存器 (RCC_AHBENR) 606.3.7APB2外设时钟使能寄存器(RCC_APB2ENR) 616.3.8APB1外设时钟使能寄存器(RCC_APB1ENR) 626.3.9备份域控制寄存器 (RCC_BDCR) 656.3.10控制/状态寄存器 (RCC_CSR) 666.3.11RCC寄存器地址映像 68 7通用和复用功能I/O(GPIO和AFIO) 697.1GPIO功能描述697.1.1通用I/O(GPIO) 707.1.2单独的位设置或位清除 717.1.3外部中断/唤醒线 717.1.4复用功能(AF) 717.1.5软件重新映射I/O复用功能 717.1.6GPIO锁定机制 717.1.7输入配置 717.1.8输出配置 727.1.9复用功能配置 737.1.10模拟输入配置 737.2GPIO寄存器描述 757.2.1端口配置低寄存器(GPIOx_CRL) (x=A..E) 757.2.2端口配置高寄存器(GPIOx_CRH) (x=A..E) 757.2.3端口输入数据寄存器(GPIOx_IDR) (x=A..E) 767.2.4端口输出数据寄存器(GPIOx_ODR) (x=A..E) 767.2.5端口位设置/清除寄存器(GPIOx_BSRR) (x=A..E) 777.2.6端口位清除寄存器(GPIOx_BRR) (x=A..E) 777.2.7端口配置锁定寄存器(GPIOx_LCKR) (x=A..E) 777.3复用功能I/O和调试配置(AFIO) 787.3.1把OSC32_IN/OSC32_OUT作为GPIO 端口PC14/PC15 787.3.2把OSC_IN/OSC_OUT引脚作为GPIO端口PD0/PD1 787.3.3CAN复用功能重映射 797.3.4JTAG/SWD复用功能重映射 797.3.5ADC复用功能重映射 807.3.6定时器复用功能重映射 807.3.7USART复用功能重映射 817.3.8I2C 1 复用功能重映射 827.3.9SPI 1复用功能重映射 827.4AFIO寄存器描述 837.4.1事件控制寄存器(AFIO_EVCR) 837.4.2复用重映射和调试I/O配置寄存器(AFIO_MAPR) 837.4.3外部中断配置寄存器1(AFIO_EXTICR1) 867.4.4外部中断配置寄存器2(AFIO_EXTICR2) 867.4.5外部中断配置寄存器3(AFIO_EXTICR3) 877.4.6外部中断配置寄存器4(AFIO_EXTICR4) 877.5GPIO 和AFIO寄存器地址映象 88 8中断和事件 898.1嵌套向量中断控制器 898.1.1系统嘀嗒(SysTick)校准值寄存器 898.1.2中断和异常向量 898.2外部中断/事件控制器(EXTI) 918.2.1主要特性 918.2.2框图928.2.3唤醒事件管理 928.2.4功能说明 928.2.5外部中断/事件线路映像 948.3EXTI 寄存器描述 958.3.1中断屏蔽寄存器(EXTI_IMR) 958.3.2事件屏蔽寄存器(EXTI_EMR) 958.3.3上升沿触发选择寄存器(EXTI_RTSR) 968.3.4下降沿触发选择寄存器(EXTI_FTSR) 968.3.5软件中断事件寄存器(EXTI_SWIER) 978.3.6挂起寄存器(EXTI_PR) 978.3.7外部中断/事件寄存器映像 98 9DMA 控制器(DMA) 999.1DMA简介999.2DMA主要特性999.3功能描述1009.3.1DMA处理 1009.3.2仲裁器1009.3.3DMA 通道 1019.3.4可编程的数据传输宽度，对齐方式和数据大小端 1029.3.5错误管理 1039.3.6中断1039.3.7DMA请求映像 1049.4DMA寄存器1079.4.1DMA中断状态寄存器(DMA_ISR) 1079.4.2DMA中断标志清除寄存器(DMA_IFCR) 1089.4.3DMA通道x配置寄存器(DMA_CCRx)(x = 1…7) 1089.4.4DMA通道x传输数量寄存器(DMA_CNDTRx)(x = 1…7) 1109.4.5DMA通道x外设地址寄存器(DMA_CPARx)(x = 1…7) 1109.4.6DMA通道x存储器地址寄存器(DMA_CPARx)(x = 1…7) 1109.4.7DMA寄存器映像 111 10模拟/数字转换(ADC) 11310.1ADC介绍11310.2ADC主要特征11310.3ADC功能描述11410.3.1ADC开关控制 11510.3.2ADC时钟 11510.3.3通道选择 11510.3.4单次转换模式 11510.3.5连续转换模式 11610.3.6时序图11610.3.7模拟看门狗 11610.3.8扫描模式 11710.3.9注入通道管理 11710.3.10间断模式 11810.4校准11910.5数据对齐11910.6可编程的通道采样时间 12010.7外部触发转换12010.8DMA请求12110.9双ADC模式12110.9.1同步注入模式 12210.9.2同步规则模式 12310.9.3快速交替模式 12310.9.4慢速交替模式 12410.9.5交替触发模式 12410.9.6独立模式 12510.9.7混合的规则/注入同步模式 12510.9.8混合的同步规则+交替触发模式 12510.9.9混合同步注入+交替模式 12610.10温度传感器12610.11ADC中断12710.12ADC寄存器描述 12810.12.1ADC状态寄存器(ADC_SR) 12810.12.2ADC控制寄存器1(ADC_CR1) 12910.12.3ADC控制寄存器2(ADC_CR2) 13110.12.4ADC采样时间寄存器1(ADC_SMPR1) 13310.12.5ADC采样时间寄存器2(ADC_SMPR2) 13310.12.6ADC注入通道数据偏移寄存器x (ADC_JOFRx)(x=1..4) 13410.12.7ADC看门狗高阀值寄存器(ADC_HTR) 13410.12.8ADC看门狗低阀值寄存器(ADC_LRT) 13410.12.9ADC规则序列寄存器1(ADC_SQR1) 13510.12.10ADC规则序列寄存器2(ADC_SQR2) 13510.12.11ADC规则序列寄存器3(ADC_SQR3) 13610.12.12ADC注入序列寄存器(ADC_JSQR) 13610.12.13ADC 注入数据寄存器x (ADC_JDRx) (x= 1..4) 13710.12.14ADC规则数据寄存器(ADC_DR) 13710.12.15ADC寄存器地址映像 138 11数字/模拟转换(DAC) 14011.1DAC简介14011.2DAC主要特征14011.3DAC功能描述14111.3.1使能DAC通道 14111.3.2使能DAC输出缓存 14111.3.3DAC数据格式 14211.3.4DAC转换 14211.3.5DAC输出电压 14311.3.6选择DAC触发 14311.3.7DMA请求 14411.3.8噪声生成 14411.3.9三角波生成 14511.4双DAC通道转换 14511.4.1无波形生成的独立触发 14511.4.2带相同LFSR生成的独立触发 14611.4.3带不同LFSR生成的独立触发 14611.4.4带相同三角波生成的独立触发 14611.4.5带不同三角波生成的独立触发 14611.4.6同时软件启动 14711.4.7不带波形生成的同时触发 14711.4.8带相同LFSR生成的同时触发 14711.4.9带不同LFSR生成的同时触发 14711.4.10带相同三角波生成的同时触发 14711.4.11带不同三角波生成的同时触发 14811.5DAC寄存器14911.5.1DAC控制寄存器(DAC_CR) 14911.5.2DAC软件触发寄存器(DAC_SWTRIGR) 15111.5.3DAC通道1的12位右对齐数据保持寄存器(DAC_DHR12R1) 15211.5.4DAC通道1的12位左对齐数据保持寄存器(DAC_DHR12L1) 15211.5.5DAC通道1的8位右对齐数据保持寄存器(DAC_DHR8R1) 15211.5.6DAC通道2的12位右对齐数据保持寄存器(DAC_DHR12R2) 15311.5.7DAC通道2的12位左对齐数据保持寄存器(DAC_DHR12L2) 15311.5.8DAC通道2的8位右对齐数据保持寄存器(DAC_DHR8R2) 15311.5.9双DAC的12位右对齐数据保持寄存器(DAC_DHR12RD) 15411.5.10双DAC的12位左对齐数据保持寄存器(DAC_DHR12LD) 15411.5.11双DAC的8位右对齐数据保持寄存器(DAC_DHR8RD) 15411.5.12DAC通道1数据输出寄存器(DAC_DOR1) 15511.5.13DAC通道2数据输出寄存器(DAC_DOR2) 15511.5.14DAC寄存器映像 156 12高级控制定时器(TIM1和TIM8) 15712.1TIM1和TIM8简介 15712.2TIM1和TIM8主要特性 15712.3TIM1和TIM8功能描述 15812.3.1时基单元 15812.3.2计数器模式 16012.3.3重复计数器 16712.3.4时钟选择 16812.3.5捕获/比较通道 17112.3.6输入捕获模式 17312.3.7PWM输入模式 17412.3.8强置输出模式 17412.3.9输出比较模式 17512.3.10PWM模式 17612.3.11互补输出和死区插入 17812.3.12使用刹车功能 17912.3.13在外部事件时清除OCxREF信号 18012.3.14产生六步PWM输出 18112.3.15单脉冲模式 18212.3.16编码器接口模式 18312.3.17定时器输入异或功能 18512.3.18与霍尔传感器的接口 18512.3.19TIMx定时器和外部触发的同步 18712.3.20定时器同步 19012.3.21调试模式 19012.4TIM1和TIM8寄存器描述 19112.4.1控制寄存器1(TIMx_CR1) 19112.4.2控制寄存器2(TIMx_CR2) 19212.4.3从模式控制寄存器(TIMx_SMCR) 19312.4.4DMA/中断使能寄存器(TIMx_DIER) 19512.4.5状态寄存器(TIMx_SR) 19612.4.6事件产生寄存器(TIMx_EGR) 19712.4.7捕获/比较模式寄存器1(TIMx_CCMR1) 19812.4.8捕获/比较模式寄存器2(TIMx_CCMR2) 20012.4.9捕获/比较使能寄存器(TIMx_CCER) 20212.4.10计数器(TIMx_CNT) 20312.4.11预分频器(TIMx_PSC) 20412.4.12自动重装载寄存器(TIMx_ARR) 20412.4.13重复计数寄存器(TIMx_RCR) 20412.4.14捕获/比较寄存器1(TIMx_CCR1) 20512.4.15捕获/比较寄存器2(TIMx_CCR2) 20512.4.16捕获/比较寄存器3(TIMx_CCR3) 20512.4.17捕获/比较寄存器(TIMx_CCR4) 20612.4.18刹车和死区寄存器(TIMx_BDTR) 20612.4.19DMA控制寄存器(TIMx_DCR) 20812.4.20连续模式的DMA地址(TIMx_DMAR) 20812.4.21TIM1和TIM8寄存器图 209 13通用定时器(TIMx) 21113.1TIMx简介21113.2TIMx主要功能21113.3TIMx功能描述21213.3.1时基单元 21213.3.2计数器模式 21313.3.3时钟选择 22113.3.4捕获/比较通道 22313.3.5输入捕获模式 22513.3.6PWM输入模式 22513.3.7强置输出模式 22613.3.8输出比较模式 22613.3.9PWM 模式 22713.3.10单脉冲模式 22913.3.11在外部事件时清除OCxREF信号 23113.3.12编码器接口模式 23113.3.13定时器输入异或功能 23313.3.14定时器和外部触发的同步 23313.3.15定时器同步 23513.3.16调试模式 23913.4TIMx寄存器描述 24013.4.1控制寄存器1(TIMx_CR1) 24013.4.2控制寄存器2(TIMx_CR2) 24113.4.3从模式控制寄存器(TIMx_SMCR) 24213.4.4DMA/中断使能寄存器(TIMx_DIER) 24313.4.5状态寄存器(TIMx_SR) 24413.4.6事件产生寄存器(TIMx_EGR) 24513.4.7捕获/比较模式寄存器1(TIMx_CCMR1) 24613.4.8捕获/比较模式寄存器2(TIMx_CCMR2) 24913.4.9捕获/比较使能寄存器(TIMx_CCER) 25113.4.10计数器(TIMx_CNT) 25213.4.11预分频器(TIMx_PSC) 25213.4.12自动重装载寄存器(TIMx_ARR) 25213.4.13捕获/比较寄存器1(TIMx_CCR1) 25213.4.14捕获/比较寄存器2(TIMx_CCR2) 25313.4.15捕获/比较寄存器3(TIMx_CCR3) 25313.4.16捕获/比较寄存器4(TIMx_CCR4) 25313.4.17DMA控制寄存器(TIMx_DCR) 25413.4.18连续模式的DMA地址(TIMx_DMAR) 25413.4.19TIMx寄存器图 255 14基本定时器(TIM6和TIM7) 25714.1TIM6和TIM7简介 25714.2TIM6和TIM7的主要特性 25714.3TIM6和TIM7的功能 25814.3.1时基单元 25814.3.2计数模式 25914.3.3时钟源26114.3.4调试模式 26214.4TIM6和TIM7寄存器 26214.4.1控制寄存器1(TIMx_CR1) 26214.4.2控制寄存器2(TIMx_CR2) 26314.4.3DMA/中断使能寄存器(TIMx_DIER) 26314.4.4状态寄存器(TIMx_SR) 26414.4.5事件产生寄存器(TIMx_EGR) 26414.4.6计数器(TIMx_CNT) 26414.4.7预分频器(TIMx_PSC) 26514.4.8自动重装载寄存器(TIMx_ARR) 26514.4.9TIM6和TIM7寄存器图 266 15实时时钟(RTC) 26715.1RTC简介26715.2主要特性26715.3功能描述26715.3.1概述26715.3.2复位过程 26815.3.3读RTC寄存器 26815.3.4配置RTC寄存器 26915.3.5RTC标志的设置 26915.4RTC寄存器描述 27015.4.1RTC控制寄存器高位(RTC_CRH) 27015.4.2RTC控制寄存器低位(RTC_CRL) 27015.4.3RTC预分频装载寄存器(RTC_PRLH/RTC_PRLL) 27115.4.4RTC预分频器余数寄存器(RTC_DIVH / RTC_DIVL) 27215.4.5RTC计数器寄存器 (RTC_CNTH / RTC_CNTL) 27215.4.6RTC闹钟寄存器(RTC_ALRH/RTC_ALRL) 27315.4.7RTC寄存器映像 275 16独立看门狗(IWDG) 27616.1简介27616.2IWDG主要性能27616.3IWDG功能描述27616.3.1硬件看门狗 27616.3.2寄存器访问保护 27616.3.3调试模式 27616.4IWDG寄存器描述 27716.4.1键寄存器(IWDG_KR) 27716.4.2预分频寄存器(IWDG_PR) 27816.4.3重装载寄存器(IWDG_RLR) 27816.4.4状态寄存器(IWDG_SR) 27916.4.5IWDG寄存器映像 279 17窗口看门狗(WWDG) 28017.1WWDG简介28017.2WWDG主要特性 28017.3WWDG功能描述 28017.4如何编写看门狗超时程序 28117.5调试模式28217.6寄存器描述28217.6.1控制寄存器(WWDG_CR) 28217.6.2配置寄存器(WWDG_CFR) 28317.6.3状态寄存器(WWDG_SR) 28317.6.4WWDG寄存器映像 284 18灵活的静态存储器控制器(FSMC) 28518.1FSMC功能描述28518.2框图28518.3AHB接口28618.3.1支持的存储器和操作 28618.4外部设备地址映像 28718.4.1NOR和PSRAM地址映像 28818.4.2NAND和PC卡地址映像 28818.5NOR闪存和PSRAM控制器 28918.5.1外部存储器接口信号 29018.5.2支持的存储器及其操作 29118.5.3时序规则 29118.5.4NOR闪存和PSRAM时序图 29118.5.5同步的成组读 30418.5.6NOR闪存和PSRAM控制器寄存器 30818.6NAND闪存和PC卡控制器 31318.6.1外部存储器接口信号 31318.6.2NAND闪存/PC卡支持的存储器及其操作 31418.6.3NAND闪存、ATA和PC卡时序图 31418.6.4NAND闪存操作 31518.6.5NAND闪存预等待功能 31618.6.6NAND闪存的纠错码ECC计算(NAND闪存) 31718.6.7NAND闪存和PC卡控制器寄存器 31718.7FSMC寄存器地址映象 324 19SDIO接口(SDIO) 32519.1SDIO主要功能32519.2SDIO总线拓扑32519.3SDIO功能描述32819.3.1SDIO适配器 32919.3.2SDIO AHB接口 33619.4卡功能描述33619.4.1卡识别模式 33619.4.2卡复位33619.4.3操作电压范围确认 33719.4.4卡识别过程 33719.4.5写数据块 33819.4.6读数据块 33819.4.7数据流操作，数据流写入和数据流读出(只适用于多媒体卡) 33819.4.8擦除：成组擦除和扇区擦除 33919.4.9宽总线选择和解除选择 34019.4.10保护管理 34019.4.11卡状态寄存器 34219.4.12SD状态寄存器 34419.4.13SD I/O模式 34719.4.14命令与响应 34819.5响应格式35019.5.1R1(普通响应命令) 35119.5.2R1b 35119.5.3R2(CID、CSD寄存器) 35119.5.4R3(OCR寄存器) 35119.5.5R4(快速I/O) 35219.5.6R4b 35219.5.7R5(中断请求) 35219.5.8R6(中断请求) 35319.6SDIO I/O卡特定的操作 35319.6.1使用SDIO_D2信号线的SDIO I/O读等待操作 35319.6.2使用停止SDIO_CK的SDIO读等待操作 35319.6.3SDIO暂停/恢复操作 35419.6.4SDIO中断 35419.7CE-ATA特定操作 35419.7.1命令完成指示关闭 35419.7.2命令完成指示使能 35419.7.3CE-ATA中断 35419.7.4中止CMD61 35419.8硬件流控制35419.9SDIO寄存器35519.9.1SDIO电源控制寄存器(SDIO_POWER) 35519.9.2SDIO时钟控制寄存器(SDIO_CLKCR) 35519.9.3SDIO参数寄存器(SDIO_ARG) 35619.9.4SDIO命令寄存器(SDIO_CMD) 35619.9.5SDIO命令响应寄存器(SDIO_RESPCMD) 35719.9.6SDIO响应1..4寄存器(SDIO_RESPx) 35719.9.7SDIO数据定时器寄存器(SDIO_DTIMER) 35819.9.8SDIO数据长度寄存器(SDIO_DLEN) 35819.9.9SDIO数据控制寄存器(SDIO_DCTRL) 35819.9.10SDIO数据计数器寄存器(SDIO_DCOUNT) 36019.9.11SDIO状态寄存器(SDIO_STA) 36019.9.12SDIO清除中断寄存器(SDIO_ICR) 36119.9.13SDIO中断屏蔽寄存器(SDIO_MASK) 36219.9.14SDIO FIFO计数器寄存器(SDIO_FIFOCNT) 36419.9.15SDIO数据FIFO寄存器(SDIO_FIFO) 36419.9.16SDIO寄存器映像 365 20USB全速设备接口(USB) 36620.1USB简介36620.2USB主要特征36620.3USB功能描述36720.3.1USB功能模块描述 36820.4编程中需要考虑的问题 36920.4.1通用USB设备编程 36920.4.2系统复位和上电复位 36920.4.3双缓冲端点 37220.4.4同步传输 37320.4.5挂起/恢复事件 37420.5USB寄存器描述 37520.5.1通用寄存器 37520.5.2端点寄存器 38020.5.3缓冲区描述表 38220.5.4USB寄存器映像 385 21控制器局域网(bxCAN) 38721.1bxCAN简介38721.2bxCAN主要特点 38721.2.1总体描述 38821.3bxCAN工作模式 38921.3.1初始化模式 39021.3.2正常模式 39021.3.3睡眠模式(低功耗) 39021.3.4测试模式 39021.3.5静默模式 39021.3.6环回模式 39121.3.7环回静默模式 39121.4bxCAN功能描述 39221.4.1发送处理 39221.4.2时间触发通信模式 39321.4.3接收管理 39321.4.4标识符过滤 39521.4.5报文存储 39821.4.6出错管理 39921.4.7位时间特性 40021.5bxCAN中断40221.6CAN 寄存器描述 40321.6.1寄存器访问保护 40321.6.2控制和状态寄存器 40321.6.3邮箱寄存器 41121.6.4CAN过滤器寄存器 41521.6.5bxCAN寄存器列表 419 22串行外设接口(SPI) 42222.1SPI简介42222.2SPI和I2S主要特征 42222.2.1SPI特征42222.2.2I2S功能42322.3SPI功能描述42422.3.1概述42422.3.2SPI从模式 42622.3.3SPI主模式 42722.3.4单工通信 42822.3.5状态标志 42822.3.6CRC计算 42922.3.7利用DMA的SPI通信 42922.3.8错误标志 43022.3.9关闭SPI 43022.3.10SPI中断43022.4I2S功能描述43122.4.1I2S功能描述 43122.4.2支持的音频协议 43222.4.3时钟发生器 43722.4.4I2S主模式 43822.4.5I2S从模式 43922.4.6状态标志位 44022.4.7错误标志位 44122.4.8I2S中断44122.4.9DMA功能 44122.5SPI和I2S寄存器描述 44222.5.1SPI控制寄存器1(SPI_CR1)(I2S模式下不使用) 44222.5.2SPI控制寄存器2(SPI_CR2) 44322.5.3SPI 状态寄存器(SPI_SR) 44422.5.4SPI 数据寄存器(SPI_DR) 44522.5.5SPI CRC多项式寄存器(SPI_CRCPR) 44622.5.6SPI Rx CRC寄存器(SPI_RXCRCR) 44622.5.7SPI Tx CRC寄存器(SPI_TXCRCR) 44622.5.8SPI_I2S配置寄存器(SPI_I2S_CFGR) 44722.5.9SPI_I2S预分频寄存器(SPI_I2SPR) 44822.5.10SPI 寄存器地址映象 449 23I2C接口45023.1I2C简介45023.2I2C主要特点45023.3I2C功能描述45123.3.1模式选择 45123.3.2I2C从模式 45223.3.3I2C主模式 45423.3.4错误条件 45623.3.5SDA/SCL线控制 45723.3.6SMBus 45723.3.7DMA请求 45923.3.8包错误校验(PEC) 46023.4I2C中断请求46123.5I2C调试模式46223.6I2C寄存器描述46223.6.1控制寄存器1(I2C_CR1) 46223.6.2控制寄存器2(I2C_CR2) 46423.6.3自身地址寄存器1(I2C_OAR1) 46523.6.4自身地址寄存器2(I2C_OAR2) 46523.6.5数据寄存器(I2C_DR) 46523.6.6状态寄存器1(I2C_SR1) 46623.6.7状态寄存器2 (I2C_SR2) 46823.6.8时钟控制寄存器(I2C_CCR) 46923.6.9TRISE寄存器(I2C_TRISE) 47023.6.10I2C寄存器地址映象 471 24通用同步异步收发器(USART) 47224.1USART介绍47224.2USART主要特性 47224.3USART功能概述 47324.3.1USART 特性描述 47424.3.2发送器47524.3.3接收器47724.3.4分数波特率的产生 48024.3.5多处理器通信 48124.3.6校验控制 48224.3.7LIN(局域互联网)模式 48324.3.8USART 同步模式 48524.3.9单线半双工通信 48724.3.10智能卡48724.3.11IrDA SIR ENDEC 功能块 48824.3.12利用DMA连续通信 49024.3.13硬件流控制 49124.4USART中断请求 49224.5USART模式配置 49324.6USART寄存器描述 49424.6.1状态寄存器(USART_SR) 49424.6.2数据寄存器(USART_DR) 49524.6.3波特比率寄存器(USART_BRR) 49624.6.4控制寄存器1(USART_CR1) 49624.6.5控制寄存器2(USART_CR2) 49824.6.6控制寄存器3(USART_CR3) 49924.6.7保护时间和预分频寄存器(USART_GTPR) 50124.6.8USART寄存器地址映象 502 25器件电子签名 50325.1存储器容量寄存器 50325.1.1闪存容量寄存器 50325.2产品唯一身份标识寄存器(96位) 503 26调试支持(DBG) 50526.1概况50526.2ARM参考文献50626.3SWJ调试端口(serial wire and JTAG) 50626.3.1JTAG-DP和SW-DP切换的机制 50726.4引脚分布和调试端口脚 50726.4.1SWJ调试端口脚 50726.4.2灵活的SWJ-DP脚分配 50726.4.3JTAG脚上的内部上拉和下拉 50826.4.4利用串行接口并释放不用的调试脚作为普通I/O口 50826.5STM32F10xxx JTAG TAP 连接 50926.6ID 代码和锁定机制 50926.6.1微控制器设备ID编码 50926.6.2边界扫描TAP 51026.6.3Cortex-M3 TAP 51026.6.4Cortex-M3 JEDEC-106 ID代码 51126.7JTAG调试端口51126.8SW调试端口51226.8.1SW协议介绍 51226.8.2SW协议序列 51226.8.3SW-DP状态机(Reset, idle states, ID code) 51326.8.4DP和AP读/写访问 51326.8.5SW-DP寄存器 51326.8.6SW-AP寄存器 514 26.9对于JTAG-DP或SWDP都有效的AHB-AP (AHB 访问端口) 514 26.10内核调试515 26.11调试器主机在系统复位下的连接能力 515 26.12FPB (Flash patch breakpoint) 515 26.13DWT(data watchpoint trigger) 516 26.14ITM (instrumentation trace macrocell) 51626.14.1概述51626.14.2时间戳包，同步和溢出包 516 26.15MCU调试模块(MCUDBG) 51726.15.1低功耗模式的调试支持 51726.15.2支持定时器、看门狗、bxCAN和I2C的调试 51826.15.3调试MCU配置寄存器 518 26.16TPIU (trace port interface unit) 52026.16.1导言52026.16.2跟踪引脚分配 52026.16.3TPUI格式器 52226.16.4TPUI帧异步包 52226.16.5同步帧包的发送 52226.16.6同步模式 52226.16.7异步模式 52326.16.8TRACECLKIN在STM32F10xxx内部的连接 52326.16.9TPIU寄存器 52326.16.10配置的例子 524 26.17DBG寄存器地址映象 5241 文中的缩写1.1 寄存器描述表中使用的缩写列表在对寄存器的描述中使用了下列缩写：read / write (rw) 软件能读写此位。

口册23 串行外设接口(SPI)小容量产品是指闪存存储器容量在16K 至32K 字节之间的STM32F101xx、STM32F102xx和STM32F103xx微控制器。

中容量产品是指闪存存储器容量在64K至128K字节之间的STM32F101xx、STM32F102xx 和STM32F103xx微控制器。

大容量产品是指闪存存储器容量在256K至512K字节之间的STM32F101xx和STM32F103xx微控制器。

互联型产品是指STM32F105xx和STM32F107xx微控制器。

除非特别说明，本章描述的模块适用于整个STM32F10xxx微控制器系列。

23.1 SPI简介在大容量产品和互联型产品上，SPI接口可以配置为支持SPI协议或者支持I2S音频协议。

SPI接口默认工作在SPI方式，可以通过软件把功能从SPI模式切换到I2S模式。

在小容量和中容量产品上，不支持I2S音频协议。

串行外设接口(SPI)允许芯片与外部设备以半/全双工、同步、串行方式通信。

此接口可以被配置成主模式，并为外部从设备提供通信时钟(SCK)。

接口还能以多主配置方式工作。

它可用于多种用途，包括使用一条双向数据线的双线单工同步传输，还可使用CRC校验的可靠通信。

I2S也是一种3引脚的同步串行接口通讯协议。

它支持四种音频标准，包括飞利浦I2S标准，MSB 和LSB对齐标准，以及PCM标准。

它在半双工通讯中，可以工作在主和从2种模式下。

当它作为主设备时，通过接口向外部的从设备提供时钟信号。

警告：由于SPI3/I2S3 的部分引脚与JTAG 引脚共享(SPI3_NSS/I2S3_WS 与JTDI ，SPI3_SCK/I2S3_CK与JTDO)，因此这些引脚不受IO控制器控制，他们(在每次复位后) 被默认保留为JTAG用途。

如果用户想把引脚配置给SPI3/I2S3，必须(在调试时)关闭JTAG并切换至SWD接口，或者(在标准应用时)同时关闭JTAG和SWD接口。

UM0427用户手册32位基于ARM微控制器STM32F101xx与STM32F103xx固件函数库介绍本手册介绍了32位基于ARM微控制器STM32F101xx与STM32F103xx的固件函数库。

该函数库是一个固件函数包，它由程序、数据结构和宏组成，包括了微控制器所有外设的性能特征。

该函数库还包括每一个外设的驱动描述和应用实例。

通过使用本固件函数库，无需深入掌握细节，用户也可以轻松应用每一个外设。

因此，使用本固态函数库可以大大减少用户的程序编写时间，进而降低开发成本。

每个外设驱动都由一组函数组成，这组函数覆盖了该外设所有功能。

每个器件的开发都由一个通用API (application programming interface 应用编程界面)驱动，API对该驱动程序的结构，函数和参数名称都进行了标准化。

所有的驱动源代码都符合“Strict ANSI-C”标准（项目于范例文件符合扩充ANSI-C标准）。

我们已经把驱动源代码文档化，他们同时兼容MISRA-C 2004标准（根据需要，我们可以提供兼容矩阵）。

由于整个固态函数库按照“Strict ANSI-C”标准编写，它不受不同开发环境的影响。

仅对话启动文件取决于开发环境。

该固态函数库通过校验所有库函数的输入值来实现实时错误检测。

该动态校验提高了软件的鲁棒性。

实时检测适合于用户应用程序的开发和调试。

但这会增加了成本，可以在最终应用程序代码中移去，以优化代码大小和执行速度。

想要了解更多细节，请参阅Section 2.5。

因为该固件库是通用的，并且包括了所有外设的功能，所以应用程序代码的大小和执行速度可能不是最优的。

对大多数应用程序来说，用户可以直接使用之，对于那些在代码大小和执行速度方面有严格要求的应用程序，该固件库驱动程序可以作为如何设置外设的一份参考资料，根据实际需求对其进行调整。

此份固件库用户手册的整体架构如下：⏹定义，文档约定和固态函数库规则。

STM32f10固件库使用手册中文版UM0427 用户手册32 位基于ARM 微控制器STM32F101xx 与STM32F103xx固件函数库介绍本手册介绍了32 位基于ARM 微控制器STM32F101xx 与STM32F103xx 的固件函数库。

该函数库是一个固件函数包，它由程序、数据结构和宏组成，包括了微控制器所有外设的性能特征。

该函数库还包括每一个外设的驱动描述和应用实例。

通过使用本固件函数库，无需深入掌握细节，用户也可以轻松应用每一个外设。

因此，使用本固态函数库可以大大减少用户的程序编写时间，进而降低开发成本。

每个外设驱动都由一组函数组成，这组函数覆盖了该外设所有功能。

每个器件的开发都由一个通用API (application programming interface 应用编程界面)驱动，API 对该驱动程序的结构，函数和参数名称都进行了标准化。

所有的驱动源代码都符合“Strict ANSI-C”标准（项目于范例文件符合扩充ANSI-C 标准）。

我们已经把驱动源代码文档化，他们同时兼容MISRA-C 2004 标准（根据需要，我们可以提供兼容矩阵）。

由于整个固态函数库按照“Strict ANSI-C”标准编写，它不受不同开发环境的影响。

仅对话启动文件取决于开发环境。

该固态函数库通过校验所有库函数的输入值来实现实时错误检测。

该动态校验提高了软件的鲁棒性。

实时检测适合于用户应用程序的开发和调试。

但这会增加了成本，可以在最终应用程序代码中移去，以优化代码大小和执行速度。

想要了解更多细节，请参阅Section 2.5。

因为该固件库是通用的，并且包括了所有外设的功能，所以应用程序代码的大小和执行速度可能不是最优的。

对大多数应用程序来说，用户可以直接使用之，对于那些在代码大小和执行速度方面有严格要求的应用程序，该固件库驱动程序可以作为如何设置外设的一份参考资料，根据实际需求对其进行调整。

此份固件库用户手册的整体架构如下：定义，文档约定和固态函数库规则。

口册23 串行外设接口(SPI)小容量产品是指闪存存储器容量在16K 至32K 字节之间的STM32F101xx、STM32F102xx和STM32F103xx微控制器。

中容量产品是指闪存存储器容量在64K至128K字节之间的STM32F101xx、STM32F102xx 和STM32F103xx微控制器。

大容量产品是指闪存存储器容量在256K至512K字节之间的STM32F101xx和STM32F103xx微控制器。

互联型产品是指STM32F105xx和STM32F107xx微控制器。

除非特别说明，本章描述的模块适用于整个STM32F10xxx微控制器系列。

23.1 SPI简介在大容量产品和互联型产品上，SPI接口可以配置为支持SPI协议或者支持I2S音频协议。

SPI接口默认工作在SPI方式，可以通过软件把功能从SPI模式切换到I2S模式。

在小容量和中容量产品上，不支持I2S音频协议。

串行外设接口(SPI)允许芯片与外部设备以半/全双工、同步、串行方式通信。

此接口可以被配置成主模式，并为外部从设备提供通信时钟(SCK)。

接口还能以多主配置方式工作。

它可用于多种用途，包括使用一条双向数据线的双线单工同步传输，还可使用CRC校验的可靠通信。

I2S也是一种3引脚的同步串行接口通讯协议。

它支持四种音频标准，包括飞利浦I2S标准，MSB 和LSB对齐标准，以及PCM标准。

它在半双工通讯中，可以工作在主和从2种模式下。

当它作为主设备时，通过接口向外部的从设备提供时钟信号。

警告：由于SPI3/I2S3 的部分引脚与JTAG 引脚共享(SPI3_NSS/I2S3_WS 与JTDI ，SPI3_SCK/I2S3_CK与JTDO)，因此这些引脚不受IO控制器控制，他们(在每次复位后) 被默认保留为JTAG用途。

如果用户想把引脚配置给SPI3/I2S3，必须(在调试时)关闭JTAG并切换至SWD接口，或者(在标准应用时)同时关闭JTAG和SWD接口。

STM32F103C8T6中⽂资料_引脚图_最⼩系统Contents STM32F103x8,STM32F103xB Contents1Introduction (9)2Description (9)2.1Device overview (10)2.2Full compatibility throughout the family (13)2.3Overview (14)2.3.1ARM?Cortex?-M3core with embedded Flash and SRAM (14)2.3.2Embedded Flash memory (14)2.3.3CRC(cyclic redundancy check)calculation unit (14)2.3.4Embedded SRAM (14)2.3.5Nested vectored interrupt controller(NVIC) (14)2.3.6External interrupt/event controller(EXTI) (15)2.3.7Clocks and startup (15)2.3.8Boot modes (15)2.3.9Power supply schemes (15)2.3.10Power supply supervisor (15)2.3.11Voltage regulator (16)2.3.12Low-power modes (16)2.3.13DMA (17)2.3.14RTC(real-time clock)and backup registers (17)2.3.15Timers and watchdogs (17)2.3.16I2C bus (19)2.3.17Universal synchronous/asynchronous receiver transmitter(USART)..192.3.18Serial peripheral interface(SPI) (19)2.3.19Controller area network(CAN) (19)2.3.20Universal serial bus(USB) (19)2.3.21GPIOs(general-purpose inputs/outputs) (20)2.3.22ADC(analog-to-digital converter) (20)2.3.23T emperature sensor (20)2.3.24Serial wire JTAG debug port(SWJ-DP) (20)3Pinouts and pin description (21)4Memory mapping (34)2/105DocID13587Rev16STM32F103x8,STM32F103xB Contents5Electrical characteristics (35)5.1Parameter conditions (35)5.1.1Minimum and maximum values (35)5.1.2Typical values (35)5.1.3Typical curves (35)5.1.4Loading capacitor (35)5.1.5Pin input voltage (35)5.1.6Power supply scheme (36)5.1.7Current consumption measurement (37)5.2Absolute maximum ratings (37)5.3Operating conditions (38)5.3.1General operating conditions (38)5.3.2Operating conditions at power-up/power-down (39)5.3.3Embedded reset and power control block characteristics (40) 5.3.4Embedded reference voltage (41)5.3.5Supply current characteristics (41)5.3.6External clock source characteristics (51)5.3.7Internal clock source characteristics (55)5.3.8PLL characteristics (57)5.3.9Memory characteristics (57)5.3.10EMC characteristics (58)5.3.11Absolute maximum ratings(electrical sensitivity) (60)5.3.12I/O current injection characteristics (61)5.3.13I/O port characteristics (62)5.3.14NRST pin characteristics (68)5.3.15TIM timer characteristics (69)5.3.16Communications interfaces (70)5.3.17CAN(controller area network)interface (75)5.3.1812-bit ADC characteristics (76)5.3.19T emperature sensor characteristics (80)6Package characteristics (81)6.1Package mechanical data (81)6.2Thermal characteristics (93)6.2.1Reference document (93)6.2.2Selecting the product temperature range (94)DocID13587Rev163/105Contents STM32F103x8,STM32F103xB7Ordering information scheme (96)8Revision history (97)4/105DocID13587Rev16STM32F103x8,STM32F103xB List of tables List of tablesT able1.Device summary (1)T able2.STM32F103xx medium-density device features and peripheral counts (10)T able3.STM32F103xx family (13)T able4.Timer feature comparison (17)T able5.Medium-density STM32F103xx pin definitions (28)T able6.Voltage characteristics (37)T able7.Current characteristics (38)T able8.Thermal characteristics (38)T able9.General operating conditions (38)T able10.Operating conditions at power-up/power-down (39)T able11.Embedded reset and power control block characteristics (40)T able12.Embedded internal reference voltage (41)T able13.Maximum current consumption in Run mode,code with data processingrunning from Flash (42)T able14.Maximum current consumption in Run mode,code with data processingrunning from RAM (42)T able15.Maximum current consumption in Sleep mode,code running from Flash or RAM (44) T able16.Typical and maximum current consumptions in Stop and Standby modes (45)T able17.Typical current consumption in Run mode,code with data processingrunning from Flash (48)T able18.Typical current consumption in Sleep mode,code running from Flash orRAM (49)T able19.Peripheral current consumption (50)T able20.High-speed external user clock characteristics (51)T able21.Low-speed external user clock characteristics (51)T able22.HSE4-16MHz oscillator characteristics (53)T able23.LSE oscillator characteristics(f LSE=32.768kHz) (54)T able24.HSI oscillator characteristics (55)T able25.LSI oscillator characteristics (56)T able26.Low-power mode wakeup timings (57)T able27.PLL characteristics (57)T able28.Flash memory characteristics (57)T able29.Flash memory endurance and data retention (58)T able30.EMS characteristics (59)T able31.EMI characteristics (59)T able32.ESD absolute maximum ratings (60)T able33.Electrical sensitivities (60)T able34.I/O current injection susceptibility (61)T able35.I/O static characteristics (62)T able36.Output voltage characteristics (66)T able37.I/O AC characteristics (67)T able38.NRST pin characteristics (68)T able39.TIMx characteristics (69)T able40.I2C characteristics (70)T able41.SCL frequency(f PCLK1=36MHz.,V DD_I2C=3.3V) (71)T able42.SPI characteristics (72)T /doc/730a8438ac51f01dc281e53a580216fc710a531c.html B startup time (74)T /doc/730a8438ac51f01dc281e53a580216fc710a531c.html B DC electrical characteristics (75) DocID13587Rev165/105List of tables STM32F103x8,STM32F103xBT /doc/730a8438ac51f01dc281e53a580216fc710a531c.html B:Full-speed electrical characteristics (75) T able46.ADC characteristics (76)T able47.R AIN max for f ADC=14MHz (77)T able48.ADC accuracy-limited test conditions (77)T able49.ADC accuracy (78)T able50.TS characteristics (80)T able51.VFQFPN366x6mm,0.5mm pitch,package mechanical data (82)T able52.UFQFPN487x7mm,0.5mm pitch,package mechanical data (83)T able53.LFBGA100-10x10mm low profile fine pitch ball grid array packagemechanical data (85)T able54.LQPF100,14x14mm100-pin low-profile quad flat package mechanical data (87)T able55.UFBGA100-ultra fine pitch ball grid array,7x7mm,0.50mm pitch,packagemechanical data (88)T able56.LQFP64,10x10mm,64-pin low-profile quad flat package mechanical data (89)T able57.TFBGA64-8x8active ball array,5x5mm,0.5mm pitch,package mechanical data (90) T able58.LQFP48,7x7mm,48-pin low-profile quad flat package mechanical data (92)T able59.Package thermal characteristics (93)T able60.Ordering information scheme (96)T able61.Document revision history (97)6/105DocID13587Rev16STM32F103x8,STM32F103xB List of figures List of figuresFigure1.STM32F103xx performance line block diagram (11)Figure2.Clock tree (12)Figure3.STM32F103xx performance line LFBGA100ballout (21)Figure4.STM32F103xx performance line LQFP100pinout (22)Figure5.STM32F103xx performance line UFBGA100pinout (23)Figure6.STM32F103xx performance line LQFP64pinout (24)Figure7.STM32F103xx performance line TFBGA64ballout (25)Figure8.STM32F103xx performance line LQFP48pinout (26)Figure9.STM32F103xx performance line UFQFPN48pinout (26)Figure10.STM32F103xx performance line VFQFPN36pinout (27)Figure11.Memory map (34)Figure12.Pin loading conditions (36)Figure13.Pin input voltage (36)Figure14.Power supply scheme (36)Figure15.Current consumption measurement scheme (37)Figure16.Typical current consumption in Run mode versus frequency(at3.6V)-code with data processing running from RAM,peripherals enabled (43)Figure17.Typical current consumption in Run mode versus frequency(at3.6V)-code with data processing running from RAM,peripherals disabled (43)Figure18.Typical current consumption on V BAT with RTC on versus temperature at different V BAT values (45)Figure19.Typical current consumption in Stop mode with regulator in Run mode versus temperature at V DD=3.3V and3.6V (46)Figure20.Typical current consumption in Stop mode with regulator in Low-power mode versus temperature at V DD=3.3V and3.6V (46)Figure21.Typical current consumption in Standby mode versus temperature atV DD=3.3V and3.6V (47)Figure22.High-speed external clock source AC timing diagram (52)Figure23.Low-speed external clock source AC timing diagram (52)Figure24.Typical application with an8MHz crystal (53)Figure25.Typical application with a32.768kHz crystal (55)Figure26.Standard I/O input characteristics-CMOS port (64)Figure27.Standard I/O input characteristics-TTL port (64)Figure28.5V tolerant I/O input characteristics-CMOS port (65)Figure29.5V tolerant I/O input characteristics-TTL port (65)Figure30.I/O AC characteristics definition (68)Figure31.Recommended NRST pin protection (69)Figure32.I2C bus AC waveforms and measurement circuit (71)Figure33.SPI timing diagram-slave mode and CPHA=0 (73)Figure34.SPI timing diagram-slave mode and CPHA=1(1) (73)Figure35.SPI timing diagram-master mode(1) (74)/doc/730a8438ac51f01dc281e53a580216fc710a531c.html B timings:definition of data signal rise and fall time (75)Figure37.ADC accuracy characteristics (78)Figure38.Typical connection diagram using the ADC (79)Figure39.Power supply and reference decoupling(V REF+not connected to V DDA) (79)Figure40.Power supply and reference decoupling(V REF+connected to V DDA) (80)Figure41.VFQFPN366x6mm,0.5mm pitch,package outline(1) (82)Figure42.VFQFPN36recommended footprint(dimensions in mm)(1)(2) (82)DocID13587Rev167/105List of figures STM32F103x8,STM32F103xBFigure43.UFQFPN487x7mm,0.5mm pitch,package outline (83)Figure44.UFQFPN48recommended footprint (84)Figure45.LFBGA100-10x10mm low profile fine pitch ball grid array packageoutline (85)Figure46.Recommended PCB design rules(0.80/0.75mm pitch BGA) (86)Figure47.LQFP100,14x14mm100-pin low-profile quad flat package outline (87)Figure48.LQFP100recommended footprint(1) (87)Figure49.UFBGA100-ultra fine pitch ball grid array,7x7mm,0.50mm pitch,package outline (88)Figure50.LQFP64,10x10mm,64-pin low-profile quad flat package outline (89)Figure51.LQFP64recommended footprint(1) (89)Figure52.TFBGA64-8x8active ball array,5x5mm,0.5mm pitch,package outline (90)Figure53.Recommended PCB design rules for pads(0.5mm pitch BGA) (91)Figure54.LQFP48,7x7mm,48-pin low-profile quad flat package outline (92)Figure55.LQFP48recommended footprint(1) (92)Figure56.LQFP100P D max vs.T A (95)8/105DocID13587Rev16STM32F103x8,STM32F103xB Introduction 1IntroductionThis datasheet provides the ordering information and mechanical device characteristics ofthe STM32F103x8and STM32F103xB medium-density performance line microcontrollers.For more details on the whole STMicroelectronics STM32F103xx family,please refer toSection2.2:Full compatibility throughout the family.The medium-density STM32F103xx datasheet should be read in conjunction with the low-,medium-and high-density STM32F10xxx reference manual.The reference and Flash programming manuals are both available from theSTMicroelectronics website /doc/730a8438ac51f01dc281e53a580216fc710a531c.html .For information on the Cortex?-M3core please refer to the Cortex?-M3T echnicalReference Manual,available from the /doc/730a8438ac51f01dc281e53a580216fc710a531c.html website at the following address:/doc/730a8438ac51f01dc281e53a580216fc710a531c.html /help/index.jsp?topic=/com.arm.doc.ddi0337e/2DescriptionThe STM32F103xx medium-density performance line family incorporates the high-performance ARM Cortex?-M332-bit RISC core operating at a72MHz frequency,high-speed embedded memories(Flash memory up to128Kbytes and SRAM up to20Kbytes),and an extensive range of enhanced I/Os and peripherals connected to two APB buses.Alldevices offer two12-bit ADCs,three general purpose16-bit timers plus one PWM timer,aswell as standard and advanced communication interfaces:up to two I2Cs and SPIs,threeUSART s,an USB and a CAN.The devices operate from a2.0to3.6V power supply.They are available in both the–40to+85°C temperature range and the–40to+105°C extended temperature range.Acomprehensive set of power-saving mode allows the design of low-power applications.The STM32F103xx medium-density performance line family includes devices in six differentpackage types:from36pins to100pins.Depending on the device chosen,different sets ofperipherals are included,the description below gives an overview of the complete range ofperipherals proposed in this family.These features make the STM32F103xx medium-density performance line microcontrollerfamily suitable for a wide range of applications such as motor drives,application control,medical and handheld equipment,PC and gaming peripherals,GPS platforms,industrialapplications,PLCs,inverters,printers,scanners,alarm systems,video intercoms,and HVACs.DocID13587Rev169/105TimersCommunicationDescription STM32F103x8,STM32F103xB 2.1Device overviewTable2.STM32F103xx medium-density device features and peripheral1.On the TFBGA64package only15channels are available(one analog input pin has been replaced by‘Vref+’).10/105DocID13587Rev16Peripheral STM32F103Tx STM32F103Cx STM32F103Rx STM32F103Vx Flash-Kbytes64128641286412864128 SRAM-Kbytes20202020 General-purpose3333Advanced-control1111SPI12222I C1222USART2333USB1111CAN1111 GPIOs2637518012-bit synchronized ADCNumber of channels210channels210channels2(1)16channels216channels CPU frequency72MHzOperating voltage 2.0to3.6VOperating temperaturesAmbient temperatures:-40to+85°C/-40to+105°C(see Table9)Junction temperature:-40to+125°C(see Table9)Packages VFQFPN36LQFP48,UFQFPN48LQFP64,TFBGA64LQFP100,LFBGA100,UFBGA100f l a s ho b lI n t e r f a c eB u s M a t r i xA HB :F m a x =48/72M H zA PB 2:F m a x =48/72M H zA PB 1:F m a x =24/36M H zpbusPCLK2 HCLK CLOCK RTC AWUTAMPER -RTCSTM32F103x8, STM32F103xBDescriptionFigure 1. STM32F103xx performance line block diagram TRACECLKTRACED[0:3] as ASNJTRSTTRSTJTDIJTCK/SWCLK JTMS/SWDIOJTDO as AFTPIUTrace/trigSW/JTAGCortex -M3 CPUIbusF max : 7 2M Hz DbusTraceControlle rFlash 128 KB64 bitPOWERVOLT. REG. 3.3V TO 1.8V@VDDV DD = 2 to 3.6VV SSNVICSystemSRAM20 KB@VDDGP DMA7 channelsPCLK1 FCLKPLL &MANAGTXTAL OSC4-16 MHzOSC_INOSC_OUTRC 8 MHzNRST @VDDASUPPLYSUPERVISIONRC 40 kHz @VDDA@VBATIWDG Standby interfaceV BATVDDA VSSA 80AF PA[15:0] PB[15:0] POR / PDRPVDEXTIWAKEUPGPIOAGPIOBRstIntAHB2 AHB2APB2 APB1XTAL 32 kHzBackup reg Backu p i nterf ace TIM2 TIM3 OSC32_IN OSC32_OUT4 Channels 4 ChannelsPC[15:0]GPIOCTIM 44 ChannelsPD[15:0]GPIOD PE[15:0] GPIOEUSART2USART3RX,TX, CTS, RTS,CK, SmartCard as AFRX,TX, CTS, RTS, CK, SmartCard as AF 4 Channels3 compl. ChannelsETR and BKINMOSI,MISO, SCK,NSS as AFRX,TX, CTS, RTS,TIM1SPI12x(8x16bit)SPI2I2C1 I2C2MOSI,MISO,SCK,NSS as AFSCL,SDA,SMBA as AFSCL,SDA as AFSmartCard as AFUSART1@VDDAbxCANUSBDP/CAN_TXUSB 2.0 FSUSBDM/CAN_RX16AF V REF+ V REF -12bit ADC1 IF12bit ADC2 IFSRAM 512BWWDGTemp sensorai14390d1. T A = –40 °C to +105 °C (junction temperature up to 125 °C).2. AF = alternate function on I/O port pin.DocID13587 Rev 1611/105peripheralsIf (APB2 prescaler =1) x1 ADC /2, 4, 6, 8 ADCCLK DescriptionSTM32F103x8, STM32F103xBFigure 2. Clock treeFLITFCLKto Flash programming interface8 MHz HSI RCHSIUSBPrescaler 48 MHzUSBCLKto USB interface/2/1, 1.572 MHz maxClockHCLKto AHB bus, core, memory and DMA PLLSRCSWPLLMUL/8Enable (3 bits)to Cortex System timer..., x16 x2, x3, x4 PLLHSIPLLCLK HSESYSCLK72 MHz max AHB Prescaler /1, 2..512 APB1 Prescaler/1, 2, 4, 8, 16free running clock36 MHz max PCLK1to APB1Peripheral Clock Enable (13 bits)TIM2,3, 4to TIM2, 3and 4CSSIf (APB1 prescaler =1) x1 TIMXCLKelse x2 Peripheral ClockEnable (3 bits)OSC_OUTOSC_IN4-16 MHzHSE OSCPLLXTPRE/2APB2Prescaler/1, 2, 4, 8, 16TIM1 timer 72 MHz maxPeripheral ClockEnable (11 bits) PCLK2peripherals to APB2to TIM1 TIM1CLK else x2 Peripheral Clock OSC32_INOSC32_OUT32.768 kHz/128LSERTCCLKto RTCPrescaler Enable (1 bit) to ADCRTCSEL[1:0]LSI RCLSIto Independent Watchdog (IWDG)40 kHzIWDGCLKLegend:HSE = high -speed external clock signalHSI = high -speed internal clock signalMCOMainClock Output/2PLLCLKHSI LSI = low -speed internal clock signal LSE = low -speed external clock signalHSESYSCLKMCOai149031. When the HSI is used as a PLL clock input, the maximum system clock frequency that can be achieved is 64 MHz.2. For the USB function to be available, both HSE and PLL must be enabled, with USBCLK running at 48 MHz.3. To have an ADC conversion time of 1 µs, APB2 must be at 14 MHz, 28 MHz or 56 MHz.12/105DocID13587 Rev 16STM32F103x8, STM32F103xBDescription2.2 Full compatibility throughout the familyThe STM32F103xx is a complete family whose members are fully pin -to -pin, software and feature compatible. In the reference manual, the STM32F103x4 and STM32F103x6 are identified as low -density devices, the STM32F103x8 andSTM32F103xB are referred to as medium -density devices, and the STM32F103xC, STM32F103xD and STM32F103xE are referred to as high -density devices.Low - and high -density devices are an extension of the STM32F103x8/B devices, they are specified in the STM32F103x4/6 and STM32F103xC/D/E datasheets, respectively. Low - density devices feature lower Flash memory and RAM capacities, less timers and peripherals. High -density devices have higher Flash memory and RAM capacities, and additional peripherals like SDIO, FSMC, I 2S and DAC, while remaining fully compatible with the other members of the STM32F103xx family .The STM32F103x4, STM32F103x6, STM32F103xC, STM32F103xD and STM32F103xE are a drop -in replacement for STM32F103x8/B medium -density devices, allowing the user to try different memory densities and providing a greater degree of freedom during the development cycle.Moreover, the STM32F103xx performance line family is fully compatible with all existing STM32F101xx access line and STM32F102xx USB access line devices.1.For orderable part numbers that do not show the A internal code after the temperature range code (6 or 7),the reference datasheet for electrical characteristics is that of the STM32F103x8/B medium -density devices.DocID13587 Rev 16 13/105PinoutLow -density devicesMedium -density devices High -density devices 16 KB Flash 32 KB Flash (1) 64 KB Flash 128 KB Flash 256 KB Flash 384 KB Flash 512 KB Flash6 KB RAM 10 KB RAM 20 KB RAM 20 KB RAM 48 KB RAM 64 KB RAM 64 KB RAM144 5 × USART s 4 × 16-bit timers, 2 × basic timers2 3 × SPIs, 2 × I Ss, 2 × I2Cs USB, CAN, 2 × PWM timers 3 × ADCs, 2 × DACs, 1 × SDIOFSMC (100 and 144 pins) 100 3 × USART s 3 × 16-bit timers 2 2 × SPIs, 2 × I Cs, USB, CAN, 1 × PWM timer2 × ADCs 64 2 × USART s 2 × 16-bit timers 2 1 × SPI, 1 × I C, USB, CAN, 1 × PWM timer 2 × ADCs 48 36Description STM32F103x8,STM32F103xB 2.3Overview2.3.1ARM?Cortex?-M3core with embedded Flash and SRAMThe ARM Cortex?-M3processor is the latest generation of ARM processors for embeddedsystems.It has been developed to provide a low-cost platform that meets the needs of MCUimplementation,with a reduced pin count and low-power consumption,while deliveringoutstanding computational performance and an advanced system response to interrupts.The ARM Cortex?-M332-bit RISC processor features exceptional code-efficiency,delivering the high-performance expected from an ARM core in the memory size usuallyassociated with8-and16-bit devices.The STM32F103xx performance line family having an embedded ARM core,is thereforecompatible with all ARM tools and software.Figure1shows the general block diagram of the device family.2.3.2Embedded Flash memory64or128Kbytes of embedded Flash is available for storing programs and data.2.3.3CRC(cyclic redundancy check)calculation unitThe CRC(cyclic redundancy check)calculation unit is used to get a CRC code from a32-bitdata word and a fixed generator polynomial.Among other applications,CRC-based techniques are used to verify data transmission orstorage integrity.In the scope of the EN/IEC60335-1standard,they offer a means ofverifying the Flash memory integrity.The CRC calculation unit helps compute a signature ofthe software during runtime,to be compared with a reference signature generated at link-time and stored at a given memory location.2.3.4Embedded SRAMTwenty Kbytes of embedded SRAM accessed(read/write)at CPU clock speed with0waitstates.2.3.5Nested vectored interrupt controller(NVIC)The STM32F103xx performance line embeds a nested vectored interrupt controller able tohandle up to43maskable interrupt channels(not including the16interrupt lines ofCortex?-M3)and16priority levels.Closely coupled NVIC gives low-latency interrupt processingInterrupt entry vector table address passed directly to the coreClosely coupled NVIC core interfaceAllows early processing of interruptsProcessing of late arriving higher priority interruptsSupport for tail-chainingProcessor state automatically savedInterrupt entry restored on interrupt exit with no instruction overhead14/105DocID13587Rev16万联芯城专注电⼦元器件配单服务，只售原装现货库存，万联芯城电⼦元器件全国供应，专为终端⽣产，研发企业提供现货物料，价格优势明显，BOM配单采购可节省逐个搜索购买环节，只需提交BOM物料清单，商城即可为您报价，解决客户采购烦恼，为客户节省采购成本，点击进⼊万联芯城。

文章题目：深入解读STM32F103C8中文数据手册1. 简介在今天的文章中，我将为你深入解读STM32F103C8中文数据手册，这是一款常用的单片机芯片，具有广泛的应用领域。

通过全面了解数据手册，我们可以更好地理解这款芯片的功能和性能，为实际的应用提供坚实的理论基础。

2. 总览让我们简要概述一下STM32F103C8芯片的主要特点和功能。

该芯片是由STMicroelectronics公司生产的一款32位ARM Cortex-M3内核的微控制器，具有丰富的外设和强大的性能。

在数据手册中，我们可以找到关于芯片的详细参数、引脚定义、外设功能等重要信息。

3. 详细参数在数据手册中，我们可以找到芯片的详细参数表，包括但不限于时钟频率、存储器容量、通信接口、定时器、中断控制器等。

通过仔细研读这些参数，我们可以更好地了解芯片的性能和特点，为后续的应用开发提供参考。

4. 引脚定义除了详细参数外，数据手册还包含了引脚定义和管脚功能说明。

了解每个引脚的具体功能和定义对于硬件设计和板级调试至关重要。

在实际的应用中，我们需要根据数据手册中的信息进行正确的引脚连接和配置，确保芯片能够正常工作。

5. 外设功能STM32F103C8芯片拥有丰富的外设功能，包括通用定时器、串行通信接口、模拟数字转换器、通用并行接口等。

数据手册中对于每个外设都有详细的功能描述和配置说明，这些信息对于软件开发和系统集成至关重要。

6. 我的观点和理解在我看来，深入理解STM32F103C8中文数据手册对于芯片的应用开发至关重要。

只有通过全面了解芯片的功能和特性，我们才能够更好地设计和开发相应的应用，提高系统的稳定性和性能。

我对于数据手册中的对于每个外设都有详细的功能描述和配置说明这一点深以为然，因为这些信息对于软件开发和系统集成至关重要。

7. 总结回顾STM32F103C8中文数据手册包含了丰富的信息，包括详细的参数、引脚定义和管脚功能说明、以及外设功能描述。