Part Number: PIC16F639T-I/SO Manufacturer: Microchip Description: Microcontrollers (MCU) 4 Kb 128 RAM 12 I/O Download Data Sheet Docket: PIC12F635/PIC16F636/639 Data Sheet 8/14-Pin, Flash-Based 8-Bit CMOS Microcontrollers with nanoWatt Technology ...