The PIC16F877A-I/P is a 8-bit CMOS Flash-based Microcontroller. The PIC16F877A features 256 bytes of EEPROM data memory, self programming, an ICD, 2 comparators, 8 channels of 10-bit Analogue-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). The data EEPROM and flash program memory is readable and writable during normal operation (over the full VDD range). This memory is not directly mapped in the register file space.
High-performance RISC CPU
Analogue comparator module with programmable on-chip voltage reference (VREF) module
Data EEPROM retention of >40 years
Self-reprogrammable under software control
In-Circuit Serial Programming? (ICSP?) via two pins
Single-supply 5V In-Circuit Serial Programming
Watchdog timer (WDT) with its own on-chip RC oscillator for reliable operation
