PIC 16F877a

Microchips 40 Pin Enhanced Microcontroller

This powerful yet easy-to-program CMOS FLASH-based 8-bit microcontroller packs Microchip's powerful PIC® architecture into an 40- or 44-pin package and is upwards compatible with the PIC16C5X, PIC12CXXX and PIC16C7X devices. The PIC16F877A features 256 bytes of EEPROM data memory, self programming, an ICD, 2 Comparators, 8 channels of 10-bit Analog-to-Digital (A/D) converter, 2 capture/compare/PWM functions, the synchronous serial port can be configured as either 3-wire Serial Peripheral Interface (SPI™) or the 2-wire Inter-Integrated Circuit (I²C™) bus and a Universal Asynchronous Receiver Transmitter (USART). All of these features make it ideal for more advanced level A/D applications in automotive, industrial, appliances and consumer applications.

Features of PIC16f877a Microcontroller

• 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)