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§第二章 CPU结构与存储器配置◆TI公司DSP产品介绍✧TI公司自从1982年生产出第一代TMS32010、TMS32011、TMS320C10/C14/C15/C16/C17 ✧第二代：TMS32020、TMS320C25/C26//C28✧第三代：TMS320C30/C31/C32✧第四代：TMS320C40/C44✧第五代：TMS320C5x/C54x✧第二代芯片的改进型TMS320C2xx，集多个DSP芯片于一体的高性能DSP芯片TMS320C8x ✧目前最快的第六代TMS320C62x/C67x✧归纳为三大系列：TMS320C2000系列，TMS320C5000以及TMS3206000系列。
S320LF2407/2407A是当今世界上集成度最高、性能最强的运动控制DSP芯片TMS320LF2407A DSP属于TI公司TMS320C2000系列定点DSP中的C24xx产品系列2.1 TMS320LF2407A DSP结构◆TMS320LF2407A的主要特点：供电电压为3.3v，减小了控制器的功耗采用TMS320C2xx DSP CPU内核，保证了与TMS320C24x系列DSP的代码兼容性 片内有32K字的Flash程序存储器2.5K字的数据/程序RAM544字节的双存取RAM(DARAM)和2k字节的单存取RAM(SARAM)◆事件管理器模块EVA和EVB两个16位通用定时器三个捕获单元八个16位的脉宽调制(PWM)通道(1)三相反相器控制器；PWM的对称和非对称波(2)当外部引脚PDPINTx出现低电平时快速关闭PWM通道(3)可编程的PWM死区控制以防止上下桥臀同时输出触发脉冲片内光电编码器接口电路16通道A/D转换可扩展的外部存储器(LF2407)总共192K字64K字程序存储器64K字数据存储器64K字I/O寻址空间看门狗定时器模块(WDT)10位A/D转换器最小转换时间为500 ns，可选择由两个事件管理器来触发的两个8通道输入A/D转换器或一个l 6通道输入的A/D转换器串行通信接口(SCI)和16位的串行外设接口模块(SPI）41个可单独编程或复用的通用输入/输出引脚(GPIO)5个外部中断基于锁相环的时钟发生器CAN总线控制模块具有JTAG边界扫描接口电源管理模块。
第1章芯片结构及性能概述TMS320C2000系列是美国TI公司推出的最佳测控应用的定点DSP芯片，其主流产品分为四个系列：C20x、C24x、C27x和C28x。
C20x可用于通信设备、数字相机、嵌入式家电设备等；C24x主要用于数字马达控制、电机控制、工业自动化、电力转换系统等。
近年来，TI公司又推出了具有更高性能的改进型C27x和C28x系列芯片，进一步增强了芯片的接口能力和嵌入功能，从而拓宽了数字信号处理器的应用领域。
TMS320C28x系列是TI公司最新推出的DSP芯片，是目前国际市场上最先进、功能最强大的32位定点DSP芯片。
它既具有数字信号处理能力，又具有强大的事件管理能力和嵌入式控制功能，特别适用于有大批量数据处理的测控场合，如工业自动化控制、电力电子技术应用、智能化仪器仪表及电机、马达伺服控制系统等。
本章将介绍TMS320C28x系列芯片的结构、性能及特点，并给出该系列芯片的引脚分布及引脚功能。
1.1 TMS320C28x系列芯片的结构及性能C28x系列的主要片种为TMS320F2810和TMS320F2812。
两种芯片的差别是：F2812内含128K×16位的片内Flash存储器，有外部存储器接口，而F2810仅有64K×16位的片内Flash存储器，且无外部存储器接口。
其硬件特征如表1-1所示。
表1-1 硬件特征注：‡“S”是温度选择（-40℃ ~ +125℃）的特征化数据，仅对TMS是适用的。
‡‡产品预览（PP）：在开发阶段的形成和设计中与产品有关的信息，特征数据和其他规格是设计的目标。
TI保留了正确的东西，更换或者终止了一些没有注意到的产品。
高级信息（AI）：在开发阶段的取样和试制中与新产品有关的信息，特征数据和其他规格用以改变那些没有注意到的东西。
产品数据（PD）：是当前公布的数据信息，产品遵守TI的每项标准保修规格，但产品加工不包括对所有参数的测试。
