The PIC16F628A-I/P 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 3.5kB of addressable program memory size, 224bytes of data memory size, 16 general-purpose I/O pins and two comparators. This device operates at a maximum frequency of 20MHz with wide operating voltage of 3 to 5.5V.