PIC16F877A微控制器

PIC16F877A微控制器PINOUT配置

PIC16F877A功能

PIC16F877A–Simplified Features
中央处理器	8-bit PIC
引脚数	40
操作电压（V）	2 to 5.5 V
Number of I/O pins	33
ADC模块	8ch, 10-bit
计时器模块	8-bit(2), 16-bit(1)
Comparators	2
DAC模块	零
通信外围设备	UART(1), SPI(1), I2C(1), MSSP(SPI/I2C)
外部振荡器	Up to 20Mhz
内部振荡器	零
程序内存类型	闪光
Program Memory (KB)	14KB
CPU速度（MIPS）	5 mips
RAM Bytes	368
数据EEPROM	256字节

不te:Complete technical details can be found in thePIC16F877ADatasheetlinked at the bottom of this page.

其他PIC MCU的

PIC12F508，PIC12F629，PIC12F683，PIC16F505，PIC16F628A, PIC16F676, PIC16F72, PIC16F873A, PIC16F876A, PIC16F886, PIC18F252, PIC18F25520,PIC18F452, PIC18F4520

PIC16F877A

这个功能强大的（200纳秒指令执行）却易于编程（只有35个单词指令）CMOS基于闪光灯的8位微控制器包装Microchip的功能PIC®架构中的40个软件包，与PIC16C5X，PIC12CXXX和PIC16C7X和PIC16C7X和PIC16C7X和PIC16C7X和PIC16C7X和PIC16C7X设备。PIC16F877A具有256个字节的EEPROM数据存储器，自我编程，一个ICD，2个比较器，8个10位类似物到数字的通道（A/D）转换器，2个捕获/比较/PWM函数被配置为3线串行外围界面（SPI™）或2-Wire Intergetrated电路（I²C™）总线和通用异步接收器发射器（USART）。

如何选择图片微控制器

Microchip provides a waste verity of Microcontrollers from PIC family. EachMCUhas its own advantage and disadvantage. There are many parameters that one has to consider before selecting a MCU for his project. The below points are just suggestions which might help one to select a MCU.

• 如果您是一个正在学习图片的初学者，那么选择具有良好在线社区支持和广泛应用程序的MCU将是一个不错的选择。PIC16F877A和PIC18F4520是两个这样的MCUS
• 考虑系统的操作电压。如果它们是5V，则选择一个5V MCU，某些传感器或设备在3.3V上可以使用3.3V MCU，可以选择3.3V
• 如果尺寸和价格是一个限制，那么您可以选择像PIC12F508这样的小8针MCU。这些也相对便宜。
• 根据项目中使用的传感器和执行器，请验证MCU可能需要的哪些模块。例如，您正在阅读许多模拟电压，然后确保PIC具有足够的ADC频道和支持性分辨率。所有模块的详细信息都在上表中给出。
• 如果您的项目涉及诸如UART，SPI，I2C，CAN等的通信协议，请确保您的图片可以支持它们。一些MCU可以支持同一协议的多个模块

编程图片微控制器

PIC microcontrollercan be programmed with different software's that is available in the market. There are people who still use Assembly language to program PIC MCUs. The below details is for most advanced and common software and compiler that has been developed by Microchip itself.

In order to program the PIC microcontroller we will need an IDE (Integrated Development Environment), where the programming takes place. A compiler, where our program gets converted into MCU readable form called HEX files. An IPE (Integrated Programming Environment), which is used to dump our hex file into our PIC MCUs.

IDE:MPLABX v3.35

IPE：Mplab IPE v3.35

Compiler:XC8

Microchip has given all these three software for free. They can be downloaded directly from their official page. I have also provided the link for your convenience. Once downloaded install them on your computer. If you have any problem doing so you can post them on the comment below.

要将代码转储或将代码上传到图片中，我们将需要一个称为的设备PICkit 3.ThePICkit 3programmer/debugger is a simple, low-cost in-circuit debugger that is controlled by a PC running MPLAB IDE (v8.20 or greater) software on a Windows platform. ThePICkit 3programmer/debugger is an integral part of the development engineer's tool suite. In addition to this we will also need other hardware like Perf board or breadboard, Soldering station, PIC ICs, Crystal oscillators, capacitors etc.

Components associated with PIC

PICkit3，图片开发委员会，晶体振荡器,118bet金博宝 , 12V Adapter,7805电压调节器.

Detailed Features of PIC16F877A

PIC16F877A - 详细功能
中央处理器	8-bit PIC
Architecture	8
Program Memory Size (Kbytes)	14
RAM（字节）	368
EEPROM/HEF	256/hef
Pin Count	40
Max. CPU Speed (MHz)	20
Peripheral Pin select (PPS)	不
内部振荡器	不
比较数	2
操作数量放大器	0
不. Of ADC channels	14
最大ADC分辨率（位）	10
ADC with Computation	不
DAC转换器的数量	0
Max DAC resolution	0
内部电压参考	Yes
零交叉检测	不
8位计时器	2
不. Of 16-bit Timers	1
信号测量计时器	0
硬件Limit Timer	0
不. Of PWM outputs	0
最大PWM分辨率	10
角度计时器	不
Math Accelerator	不
UART模块编号	1
SPI模块数	1
不. Of I2C module	1
不. Of USB Module	0
Windowed Watchdog Timer (WWDT)	不
CRC/Scan	不
Numerically Controlled Oscillator	0
帽。触摸通道	11
细分液晶	0
最低工作温度（*C）	-40
最高工作温度（*C）	125
Minimum Operating Voltage (V)	2
Maximum Operating Voltage (V)	5.5
High Voltage Capable	不

Applications

• 多个DIY项目
• Very good choice if you are learning PIC
• 需要多个I/O接口和通信的项目
• Replacement for Arduino Module
• 适用于汽车，工业，电器和消费者应用中更高级级别的A/D应用程序。