The PIC16F877-20/L is a mid-range PIC16 family 8-bit powerful (200 nanosecond instruction execution) yet easy-to-program (only 35 single word instructions) CMOS flash based Microcontroller packs powerful PIC®(RISC) architecture. This product offer all of the advantages of the well recognized mid-range x14 architecture with standardized features including 14kB of addressable program memory size, 368bytes of data memory size and 8-channel 10-bit analog-to-digital (A/D) converter. This device operates at a maximum frequency of 20MHz with wide operating voltage of 2 to 5.5V.