PIC16F877A - Microcontroller

PIC16F877A

40-Pin Enhanced Flash Microcontrollers

Datasheet

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
• Up to 8K x 14 words of Flash Program Memory, 
Up to 368 x 8 bytes of Data Memory (RAM), 
Up to 256 x 8 bytes of EEPROM Data Memory
• Pinout compatible to other 28-pin or 40/44-pin 
PIC16CXXX and PIC16FXXX microcontrollers
Peripheral Features:
• 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 
• Two Capture, Compare, PWM modules
- 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
• Synchronous Serial Port (SSP) with SPI™ 
(Master mode) and I2C™ 
(Master/Slave)
• Universal Synchronous Asynchronous Receiver 
Transmitter (USART/SCI) with 9-bit address 
detection
• Parallel Slave Port (PSP) – 8 bits wide with
external RD, WR and CS controls (40/44-pin only)
• Brown-out detection circuitry for
Brown-out Reset (BOR)