PIC 16F877

The 16F877 is one of the most popular PIC microcontrollers and it’s easy to see why – it comes in a 40 pin DIP pinout and it has many internal peripherals.

The only disadvantage that you could level at it is that it does not have an internal clock source like most of the other more modern PIC’s. However, using an external clock usually results in faster operation since you can select a 20MHz crystal instead of the usual internal 8MHz oscillator.