A newer version of this device is available.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