.The PIC16F628A-I/SO is a 20MHz PIC microcontroller manufactured by Microchip. It is a 16-bit device with 3.5kB of Flash memory, 224 bytes of SRAM, and 128 bytes of EEPROM. It has 5 I/O ports, two 8-bit timer/counters, a 16-bit watchdog timer, and programmable power-on reset. It features an interrupt pin, 3 capture/compare/PWM modules, 112 bytes of extended usage EEPROM, and a two-wire serial interface. It is ideal for controlling motor and sensor applications and embedded systems as it supports low to moderate levels of code complexity.