Arizona Microchip PIC16C73A-20/SP 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 7kB of addressable program memory size, 192bytes of data memory size, 22 general-purpose I/O pins and 5-channel 8-bit analog-to-digital (A/D) converter. This device operates at a maximum frequency of 20MHz with wide operating voltage of 2.5 to 5.5V.