015中关村测评

Rev. 0.1 8/09Copyright © 2009 by Silicon LaboratoriesAN4311. IntroductionMicrocontrollers in the C8051F93x-C8051F90x product family are designed to be software compatible with each other. This allows a single code base to be developed which targets MCUs that range from 8 to 64kB in program memory size. Figure 1 shows the various memory size options in the C8051F93x-C8051F90x device family. This porting guide is designed to help the programmer easily port code between devices in the product family or write processor-independent software that can execute on any device in the product family.This porting guide highlights differences between the various MCUs in the product family. Two devices, the C8051F912 and C8051F902, have more features than the rest of the devices in the family. The use of these “plus” features will make the software incompatible with the rest of the devices in the family. These features should only be used if there are no future plans to use the same software on a different device in the product family.2. Key Points⏹Header File Usage : The C8051F93x-C8051F90x family has two header files that may be usedinterchangeably when writing code that targets any device in the product family.⏹Plus Features : ‘F912 and ‘F902 devices are more feature-rich than other devices in the C8051F93x-C8051F90x product family. To maintain codecompatibility across all devices in the product family, the additional “plus” features should not be used.⏹Package : C8051F93x-C8051F90x devices ranging from 8 to 64kB are available in the 24-pin QFNpackage. These devices are pin-for-pin and software compatible with each other.⏹Power : All devices in the C8051F93x-C8051F90x family share the same low power modes and have excellent power efficiency. The ‘F912 and ‘F902 have even more power saving modes than the standard devices in the C8051F93x-C8051F90x family.Relevant DevicesThis application note applies to the following devices:C8051F930, C8051F931, C8051F920, C8051F921, C8051F912, C8051F911, C8051F902, C8051F901Figure 1.C8051F93x-C8051F90x MCU Family Memory Size OptionsAN4313. Package OptionsC8051F93x-C8051F90x devices are available in four package options. Table 1 describes the Flash sizes available in each package option. While the package option has little effect on device functionality, it may affect certain aspects of firmware such as the port initialization code.Note:On the 64kB and 32kB versions of the 24-pin QFNpackage, port match capability is not available on P1.6.4. SimilaritiesThere are many similarities between devices in the C8051F93x-C8051F90x product family. The following list of peripherals have identical behavior between the various devices. Functions or peripherals not listed below have minor differences in implementation between devices in the C8051F93x-C8051F90x family.⏹UART0⏹SPI0 and SPI1⏹IREF0 (when used in 6-bit mode)⏹Comparator 0 and Comparator 1⏹CIP-51⏹Interrupt Handler ⏹Clocking Sources⏹Timer 0, Timer 1, Timer 2, and Timer 3⏹DC-DC Converter (when not using the “plus” features)⏹PCA (when not using the “plus” features)⏹ADC0 (when used in 10-bit mode)5. Plus FeaturesC8051F912 and C8051F902 devices have a set of “plus” features that are not available on other devices in the C8051F93x-C8051F90x product family. These features include:⏹0.9 to 3.6V continuous operating supply voltage.⏹DC-DC converter bypass mode that saves power when the input voltage is higher than the programmed output voltage.⏹12-bit, 75ksps mode on ADC0. 10-bit, 300ksps functionality is retained.⏹SmaRTClock with a built-in low frequency oscillator that only requires 250nA of supply current.⏹Buffered RTC clock output available in active and sleep mode.⏹VBAT Low “warning” indicator with optional interrupt.⏹Wakeup request output signal that can enable an external DC-DC converter or power switch.⏹Ability to disable VBAT Supply Monitor to achieve a sleep mode current of 10nA.6. SFR MapDevices in the C8051F93x-C8051F90x family share the same SFR address locations for most registers. This allows the C8051F930_defs.h and C8051F912_defs.h header files to be used interchangeably in applications that target devices in the C8051F93x-C8051F90x family. It also allows code developed on one device to be executed on any other device in the product family without modification.There are a few minor differences between the C8051F930_defs.h and the C8051F912_defs.h header files. When writing software that targets multiple devices in the C8051F93x-C8051F90x family, the C8051F930_defs.h header file is recommended because it does not contain definitions for the “plus”registers which are only found on the ‘F912 and ‘F902devices. When using this header file, a compiler error will be generated if any of the “plus” registers are used in the software.Table 1. Flash Sizes Available by PackagePackage Available Flash Sizes32-pin QFP 64kB, 32kB 32-pin QFN 64kB, 32kB 24-pin QFN 64kB, 32kB, 16kB, 8kB24-pin QSOP16kB, 8kBAN431Table 2 highlights the registers that are not identical on all devices in the C8051F93x-C8051F90x product family7. Flash MemoryDevices in the C8051F93x-C8051F90x MCU family have in-system programmable Flash memory in various sizes. For 64kB and 32kB devices, Flash memory is organized in 1024 byte pages and the scratchpad size is 1024 bytes. For 16kB and 8kB devices, the Flash memory is organized in 512 byte pages and the scratchpad size is 512 bytes.Flash security works the same way on all devices,however, the location of the lock byte will vary based on Flash size. Check the device datasheet for detailed information on Flash security and the location of the lock byte.When creating applications that program their own Flash such as bootloaders, data loggers, etc., it is possible to write generic Flash management routines that operate on either 512 byte or 1024 byte Flash pages; however, this may not result in the most optimal memory usage. For example, in such a system, the logical Flash page size must be set to 1024 bytes. This can pose limitations on devices with a small Flash size.For example, an 8kB device would only have 8 logical Flash pages. For larger Flash devices that have 1024byte pages, each Flash page must be erased twice in order for the same code to support smaller devices that have 512 bytes per physical Flash page. In most applications, the most efficient method to support various devices is to use conditional compilation to tailor the Flash write/erase routines for each device.8. RAMAll devices in the C8051F93x-C8051F90x family have 256 bytes of RAM mapped to internal DATA/IDATA space and either 4kB (C8051F930/31/20/21) or 512bytes (C8051F912/11/02/01) of RAM mapped to XDATA space. 32-pin devices (C8051F930/20) also have a multiplexed EMIF that supports memory mapping external devices with a 12-bit address space (8kB address range, 4kB on-chip and 4kB off-chip).9. DC-DC ConverterDC-DC converter functionality remains consistent across the C8051F93x-C8051F90x product family.‘F912 and ‘F902 devices support additional “plus”modes that reduce supply current and allow an increased input voltage range. See the C8051F91x-90x data sheet for more information about these modes. All the standard modes are also supported on ‘F912 and ‘F902 devices.Table 2. Select Registers with varying functionRegister NameDescription of differenceRegisters Found only in C8051F930_defs.h EMI0CF EMI0TC Only apply to 32-pin devices. EMIF is not available on 24-pin devices.P2SKIP P2MDINOnly apply to 32-pin devices. On 24-pin devices, P2 does not have Crossbar oranalog functionality.Registers Found only in C8051F912_defs.h PMU0MD DC0MD IREF0CFOnly apply to the ‘F912 and ‘F902. Notavailable on the ‘F911 or ‘F901.Registers with bit differences PCA0MDOn ‘F912 and ‘F902 devices, SmaRT-Clock/8 may be selected as the PCAtimebase.VDM0CNOn ‘F912 and ‘F902 devices, configura-tion bits for the VBAT supply monitor can be used to enable a VBAT low “earlywarning” interrupt.DC0CFOn ‘F912 and ‘F902 devices, bit 7 enables the low power mode for the dc-dc converter. This low power mode is a“plus” feature.ADC0ACOn ‘F912 and ‘F902 devices, bit 7 enables the 12-bit mode for ADC0. The12-bit mode is a “plus” feature.ADC0PWROn ‘F912 and ‘F902 devices, bit 7 enables the low power mode for ADC0. This low power mode is a “plus” feature.Indirect SmaRTClock registers with bit differences RTC0XCNOn ‘F912 and ‘F902 devices, bit 3 enables the SmaRTClock’s internal low frequency oscillator. The LFO is a “plus”feature.RTC0PINOn C8051F930/31/20/21 devices, this register is write only. It is R/W on allother devices.AN43110. Power Management UnitThe recommended procedure for entering and exiting low power modes described in “AN358: Optimizing Low Power Operation of the ‘F9xx” applies to all devices in the C8051F93x-C8051F90x family. When writing code that targets any device in the family, the entire procedure should be followed. When writing code that only targets a single power mode on a single device,some steps in the procedure may be omitted. The steps that may be omitted are outlined in AN358.When porting existing code from C8051F930/31/20/21devices to run on C8051F912/11/02/01 devices, it is important to note that C8051F912/11/02/01 devices require the execution of 4 NOP instructions immediately after waking up from sleep mode.When porting existing code from C8051F912/11/02/01devices to run on C8051F930/31/20/21 devices, it is important to note that C8051F930/31/20/21 devices require the CLKSEL register to contain a value of 0x14when entering suspend or sleep mode and that a dummy write to the FLWR register is required after clearing the Flash one-shot timer BYPASS bit.‘F912 and ‘F902 devices have a PMU0MD register which allows the SmaRTClock oscillator output to be routed to P0.2, a wake-up request signal to be routed to P0.3, or the VBAT supply monitor to be disabled to achieve a sleep mode current as low as 10nA. The PMU0MD register is not available on other devices in the C8051F93x-C8051F90x family.11. SMBusWhen the hardware acknowledge feature is not used,the SMBus peripheral on all devices in the C8051F93x-C8051F90x family behave in an identical manner. If the hardware acknowledge feature is being used, then C8051F930/31/20/21 devices have errata items that need to be addressed with the proper software workaround as described in the C8051F930/31/20/21errata sheet. The errata items do not apply to other devices in the C8051F93x-C8051F90x family, such as the C8051F912/11/02/01, and no software workaround is required to use the hardware acknowledge feature.To write SMBus software that uses hardware acknowledge and is compatible with all devices in the product family, the workaround code should be included. The workaround code will function on devices that do not require the workaround. An example which implements the workaround code can be found in the C8051F93x/2x SMBus examples folder with the following default path:C:\Silabs\MCU\Examples\C8051F93x_92x\SMBus12. IREF0When IREF0 is used in 6-bit mode, behavior is identical on all devices in the C8051F93x-C8051F90x family.‘F912 and ‘F902 devices support a PWM Enhanced Mode which allows the IREF0 precision to be increased using a PCA channel configured to generate a PWM signal. To maintain code compatibility across all devices in the C8051F93x-C8051F90x family, use IREF0 in 6-bit mode.13. PCAThe PCA functions identically across all devices in the C8051F93x-C8051F90x family, with the exception that ‘F912 and ‘F902 devices have the option to select SmaRTClock / 8 as a clock source for the PCA. For code compatibility across all devices in the C8051F93x-C8051F90x family, do not select SmaRTClock / 8 as the clock source for the PCA.14. ADCWhen used in 10-bit mode, the ADC on all devices in the C8051F93x-C8051F90x family behaves in the same way. ‘F912 and ‘F902 devices have an additional 12-bit mode that may be used to increase ADC resolution. The maximum SAR clock on C8051F912/11/02/01devices may be higher than the maximum SAR clock for C8051F930/31/20/21 devices. For code compatibility across all devices in the C8051F93x-C8051F90x family,use the ADC in 10-bit mode with the maximum SAR clock frequency specified for the C8051F930/31/20/21devices.15. SmaRTClockThe SmaRTClock behaves the same on all devices in the C8051F93x-C8051F90x when used with an external 32.768kHz crystal. When used without a crystal (in self-oscillate or LFO mode), then there are differences. To short XTAL3 and XTAL4 together on C8051F930/31/20/21 devices, write a value of 0xE7 to the write-only RTC0PIN indirect register. On C8051F912/11/02/01 devices, XTAL3 and XTAL4 can be shorted by reading the value of RTC0PIN, setting the most significant bit (value |= 0x80), then writing back the updated value. On any device, the XTAL3 and XTAL4pins may also be shorted externally using a wire. In this case, the RTC0PIN register does not need to be modified. “F912 and ‘F901 devices also have an LFO mode that has a tighter tolerance than self-oscillate mode. See the C8051F91x-C8051F90x data sheet for details.Silicon Laboratories Inc.400 West Cesar Chavez Austin, TX 78701USASimplicity StudioOne-click access to MCU and wireless tools, documentation, software, source code libraries & more. Available for Windows, Mac and Linux!IoT Portfolio /IoTSW/HW/simplicityQuality/qualitySupport and CommunityDisclaimerSilicon Labs intends to provide customers with the latest, accurate, and in-depth documentation of all peripherals and modules available for system and software implementers using or intending to use the Silicon Labs products. Characterization data, available modules and peripherals, memory sizes and memory addresses refer to each specific device, and "Typical" parameters provided can and do vary in different applications. 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在当今的手机市场中，屏幕性能对于用户体验有着至关重要的影响。

本文将针对360手机1713-A01[全网通]的屏幕性能进行详细的评测，以期为消费者提供参考。

360手机1713-A01[全网通]是一款搭载5.5英寸1080P屏幕的智能手机。

与其他同价位手机相比，其屏幕尺寸适中，分辨率也较高，为用户带来了更加细腻的视觉体验。

在性能评测方面，360手机1713-A01[全网通]的表现相对出色。

首先，从流畅度方面来看，该机型的屏幕在滑动、切换等操作方面非常流畅，没有出现卡顿现象。

其次，反应速度也非常快，对于用户的各类操作能够迅速做出响应，缩短了等待时间。

此外，屏幕亮度方面，360手机1713-A01[全网通]也表现出色，即使在强光下也能保持清晰不变。

从使用体验来看，360手机1713-A01[全网通]的屏幕性能也给人留下了深刻的印象。

操作体验方面，触屏反应灵敏，手感舒适。

实用性方面，该机型屏幕在看电影、玩游戏等场景下表现出色，色彩还原真实，细节呈现得惊人。

美观度方面，屏幕黑边较窄，整体设计简约大方，令人满意。

当然，360手机1713-A01[全网通]的屏幕性能并非完美无缺。

对比其他高端机型，其屏幕色域和对比度稍显不足，可能影响视觉效果。

此外，该机型未采用屏下指纹识别技术，而是使用侧边指纹，可能让部分用户不太习惯。

为了提升用户体验，建议360手机在后续产品中提高屏幕色域和对比度，同时加入屏下指纹技术。

总的来说，360手机1713-A01[全网通]的屏幕性能在同价位手机中表现优异。

其5.5英寸1080P 屏幕为用户带来了流畅、快速的体验，同时在美观度和实用性方面也做得相当出色。

虽然对比高端机型存在一定的差距，但考虑到其亲民的价格，这款手机的屏幕性能依然具有很高的性价比。

如果你正在寻找一款具有良好屏幕性能的手机，不妨考虑360手机1713-A01[全网通]。

■刘责远吾空笔记本向来主打高性能游戏本产品，不过2023年吾空却拓展了旗下产品线的布局，开始进军轻薄本市场，推出了全新的凌云系列。

在继推出凌云X16和凌云X14之后，吾空现在又推出了一款低至2999元搭载R7-7735HS处理器的凌云X15锐龙版。

作为AMD旗下的热销处理器，R7-7735HS主要应用于主流的全能轻薄本以及部分迷你主机上，性能可以满足日常办公以及游戏娱乐的需求。

下面一起来看看搭载这款新处理器的凌云X15锐龙版到底实力如何吧。

外观外观方面，吾空凌云X15锐龙版采用了金属机身设计，整机重量仅1.75kg，薄至19.5mm。

低调奢华的太空灰配色，搭配上A面左上角黑色丝印的吾空Logo，整体科技感十足之余，也充分彰显了品牌调性。

掀开A面，就可以看到其搭载的15.6英寸窄边框全面屏。

这块屏幕拥有16∶9的黄金比例，以及85%的屏占比，并且支持180°单手开合。

具体的显示参数将会在性能测试部分为大家详细介绍。

屏幕下方是一块全尺寸带小数字区的背光键盘，键程适中，键位布置也比较合理，可以满足学生、办公人群的文档、制表需求。

值得一提的是，吾空凌云X15锐龙版还配备了丰富的接口，1个电源输入接口、1个二合一音频接口、2个USB-A接口、2个Type-C接口和1个HDMI接口。

其中2个Type-C接口均支持PD100W供电，以及视频输出，全方位满足多种投屏需求。

屏幕说回屏幕，除了黄金比例和高屏占比外，吾空凌云X15锐龙版这块屏幕还有拥有2.5K超高清分辨率（2560×1600），以及165Hz高刷新率，并且支持VRR可变刷新率（65~165Hz）。

从参数来看，可以说是电竞属性十足了，那么实际表现如何呢？让我们用实测说话。

测试工具依然是老朋友红蜘蛛校色仪，实测色域达到100%sSRGB，色域表现非常出色。

最大亮度达到300nits左右，亮度均匀性同样表现不俗。

总结一下，这块高清高刷屏幕在显示效果、亮度、均匀度方面均有不错表现，可以胜任日常游戏娱乐、办公需求。

OPPO R15 性能评测
OPPO R15 在处理器部分破天荒的采用了联发科Helio P60 处理器，关于这款处理器可谓争议颇多，毕竟近两年联发科的口碑不佳，OPPO 也的确是
比较大胆的，毕竟在中端处理器市场，高通骁龙660 正如日中天，大部分中
端机型都优先选择了这款处理器。

可能在一定程度上也担心用户不太接受联
发科P60 处理器，因此OPPO 本次推出了双版本，常规版本采用联发科Helio P60，而梦境版则采用了骁龙660 处理器，二者也在价格上稍微有些区分，前者4+128 为2699 元，6+128 为2999 元，梦境般只有6+128 的版本，售价为3499 元。

Helio P60 使用了台积电12nm FinFET 工艺，由四核Cortex-A73 2.0GHz 和四核Cortex-A53 2.0GHz 组成，支持ARM 的HMP 技术，联发科官方宣称相比P23 性能高出70%，大型游戏省电25%，整体省电12%。

最高8G LPDDR4x（兼容LPDDR3）1800MHz 内存，支援eMMC 5.1 以及UFS 2.1 闪存。

图形方面则采用Mali G72-MP3 800MHz 图形处理器，最高支持20:9 全高清级别的显示分辨率。

下面我们就单纯从跑分上分析一下Helio P60 的表现。

本次参与对比的机型：。

国产智能手机一些单项指标已超“苹果”作者：暂无来源：《中国质量万里行》 2015年第8期文/周坤在中国智能手机行业，有一个非常有意思的现象，几乎每场发布会上都会出现一个“特邀嘉宾”，说的不是什么人，而是苹果i P h o n e,它登场的作用，是成为主角脚下的“巨人的肩膀”。

i Ph o n e一直被不少消费者视为最优秀的手机，也是许多手机厂商追赶的目标。

屏幕色域：iPhone太弱了说实话，在参数上秒杀i Phone屏幕是轻而易举的事，好不容易才有5.5英寸1080P分辨率的iPhone 6 Plus，安卓手机5.5英寸已经普及到廉价手机，分辨率也是早就上2K级别了，都懒得在尺寸上作比较了，所以秒杀一般集中在色域方面。

小米Note、Nubia Z9 mini的屏幕来自夏普/J D I，他们的N T S C色域都已经高达95%，接近最高水准（上面还有Super AMOLED，近100%）。

不仅如此，即使是大可乐等厂商也喜欢拿这个来说事，大可乐3色域是85%，也都纷纷在发布会上拿出Gamut色域图来“欺负”iPhone了。

机身强度：更加坚固，绝不会弯相信大家还记得，i P h o n e6/6 P l u s在上市没多久就因为放在裤袋都能变弯而屡次见报，不过这一点很少出现在国内手机发布会上，然而作为知名的国产高仿iPhone 6手机之一的大可乐3代，则做到了这一点。

大可乐3不仅外壳采用铝合金材质，内部也有钛合金框架，号称绝对不会像iPhone那样被掰弯，屏幕也采用了更耐刮的蓝宝石面板。

目前好像还没有报道说大可乐3被掰弯，倒是这个坚固的前面板就出了不少问题，我们也见识过了，所谓的“蓝宝石面板”被刮成花脸，近期也有报道说屏幕也开裂了。

机身尺寸：屏幕更大但机身更苗条屏占比一直都不是i P h o n e的强项。

i P h o n e在机身尺寸上被秒杀的次数也不少，在iPhone 6 Plus发布之后，华为就拿M at e 7吐槽过它的长度。

中关村贵阳科技园创新指数设计——基于硅谷指数和中关村指数的分析石庆波;周明;李国东【摘要】中关村贵阳科技园作为贵阳市创新发展的核心载体,对区域经济发展起到重要示范作用.该文综合创新路径的合理化选择、园区的创新资源奈件和基础,融合硅谷指数、中关村指数相关经验,充分考虑未来创新指数梳理和发布工作的可操作性,将中关村贵阳科技园创新指数定义为三级结构,包括5个一级指标,15个二级指标和45个三级指标,形成顶层有把握、底层有支撑的系统性指数框架.%Zhongguancun Science and Technology Park (Guiyang),as the core carrier of innovation and development of Guiyang,has played an important role in the development of regional economy.This paper summarizes the related experiences of the reasonable choice for comprehensive innovation path,innovation resources condition and the foundation of the park,Silicon Valley index,Zhongguancun index,fully considers the future innovation index combing and the operability of releasing work,and defines the innovation index of Zhongguaucun Science Park (Guiyang) into the three level structures,including 5 first level indicators,15 second and 45 third level indicators,forming the systematic index framework with certain at top and support at bottom.【期刊名称】《价值工程》【年(卷),期】2017(036)015【总页数】4页(P8-11)【关键词】创新指数;中关村贵阳科技园;硅谷指数;中关村指数【作者】石庆波;周明;李国东【作者单位】贵阳市高新技术产业促进中心,贵阳550000;贵阳市工业和信息化委员会,贵阳550000;贵阳市工业和信息化委员会,贵阳550000【正文语种】中文【中图分类】F207在国家强调自主创新，推动经济结构调整和增长方式转变的大背景下，贵阳市积极推进自主创新和产业升级有利于抓住国内国际市场转变、融合升级过程中带来的发展机遇，为贵阳市发挥后发优势，实现赶超创造更大的空间。

继承大光圈旗舰相机血统佳能G15评测（全文）2012-10-25 03:37:19 来源: PCPOP(北京) 有0人参与佳能PowerShot系列数码相机一直以专业及高画质著称。

在佳能旗舰机型G12(网购最低价 2150.0元)推出2年之后，近日又一款携带大光圈镜头的佳能PowerShot G15与广大摄影爱好者见面了。

佳能PowerShot G15承载了专业旗舰DC的名号，在性能和硬件上做了提升，机身外形也有所改进，准专业的操作方式保持不变，就让我们一起来看下佳能PowerShot G15的画质与操作能到达怎样一个水准。

受到快餐文化的影响，越来越多的消费者觉得高像素的手机能够替代相机来完成普通的拍照任务，日常随身携带最多的数码产品应该也是手机，而有了能够拍照的智能手机就可以勉强用来代替数码相机，并有超多的应用程序还能做出好玩的特效照片。

佳能PowerShot G15其实数码相机与智能手机是不同概念的两类数码产品，专业的光学镜头和图像处理器是智能手机无法超越的。

所以抛开快餐文化，喜欢高画质并有打印需求的用户还是购买一款专业的数码相机比较合适。

佳能PowerShot G15机身外观与佳能PowerShot G12(参数图片文章)有些改变。

如果说佳能PowerShot G12的造型风格偏向于圆润的线条感，那么佳能PowerShot G15的机身造型就特别的沉稳硬朗，像是一款男人用的机器。

机身采用磨砂金属外壳打造，拿在手里的第一感觉就是粗矿。

那种颗粒十足的手感能够非常直观的感受到。

佳能PowerShot G15的机身造型有点偏向于正方形，而体积上要比前作佳能PowerShot G12小上一圈。

手大的朋友握住机身小指只能托住机身下方，握持手感较佳，是一款比较中规中矩的DC产品。

佳能PowerShot G15佳能PowerShot G15佳能PowerShot G15佳能PowerShot G15佳能PowerShot G15机身背面机身背面与前作佳能PowerShot G12有着一些不同，最直观的是取消了翻转屏设计，肩膀上那个上下层叠的转盘改为了现在前后交错层叠的方式，最后那块放大拇指的小胶皮比以前厚实多了，捏上去的手感也更加舒服。