The PIC16C71-20I/P is a PIC16 family 8-bit powerful (200 nanosecond instruction execution) yet easy-to-program (only 35 single word instructions) CMOS one-time programmable (OTP) 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 1.75kB of addressable program memory size, 36bytes of data memory size, 13 general-purpose I/O pins and 4-channel 8-bit analog-to-digital (A/D) converter. This device operates at a maximum frequency of 20MHz with wide operating voltage of 3 to 6V.