A newer version of this device is available. Please consider PIC16F84A. This powerful (400 nanosecond instruction execution) yet easy-to-program (only 35 single word instructions) CMOS ROM/EEPROM-based 8-bit microcontroller packs Microchips powerful PIC architecture into an 18-pin package. Easily adaPTed A newer version of a device is available. Please consider PIC16F84A