PIC16F872

◇ 产品简介 ◇

　　Microchip公司生产的PIC16F872单片机，其内部带有FLASH型EEPROM和八位的ADC，共有三个可独立编程的I/O口。由于采用在线串行编程、低压编程技术，其内部自带电荷泵升压电路，因而实现读写操作时不需外加高电压；同时PIC16F872具有IAP功能，可实现在应用中编程，特别适合于用户的现场调试与不断更新数据的实时测温。

◇ 功能特性 ◇

High Performance RISC CPU:
●Only 35 single word instructions to learn
●All single cycle instructions except for program branches, which are two-cycle
●Operating speed:DC - 20 MHz clock input
                  DC - 200 ns instruction cycle
●2K x 14 words of FLASH Program Memory
●128 bytes of Data Memory (RAM)
●64 bytes of EEPROM Data Memory
●Pinout compatible to the PIC16C72A
●Interrupt capability (up to 10 sources)
●Eight level deep hardware stack
●Direct, Indirect and Relative Addressing modes

Peripheral Features:
●High Sink/Source Current: 25mA
●Timer0: 8-bit timer/counter with 8-bit prescaler
●Timer1: 16-bit timer/counter with prescaler,can be incremented during SLEEP via external crystal/clock
●Timer2: 8-bit timer/counter with 8-bit period register, prescaler and postscaler
●One Capture, Compare, PWM module
-Capture is 16-bit, max. resolution is 12.5 ns
-Compare is 16-bit, max. resolution is 200 ns
-PWM max. resolution is 10-bit
●10-bit, 5-channel Analog-to-Digital converter (A/D)
●Synchronous Serial Port (SSP) with SPI? (Master mode) and I²C (Master/Slave)
●Brown-out detection circuitry for Brown-out Reset (BOR)

CMOS Technology:
●Low power, high speed CMOS FLASH/EEPROM technology
●Wide operating voltage range:  2.0V to 5.5V
●Fully static design
●Commercial, Industrial and Extended temperature ranges
●Low power consumption:
-< 2 mA typical @ 5V, 4 MHz
-20 μA typical @ 3V, 32 kHz
-< 1 μA typical standby current

Special Microcontroller Features:
●Power-on Reset (POR), Power-up Timer (PWRT) and Oscillator Start-up Timer (OST)
●Watchdog Timer (WDT) with its own on-chip RC oscillator for reliable operation
●Programmable code protection
●Power saving SLEEP mode
●Selectable oscillator options
●In-Circuit Serial Programming? (ICSP) via two pins
●Single 5V In-Circuit Serial Programming capability
●In-Circuit Debugging via two pins
●Processor read/write access to program memory

◇ 引脚图 ◇