PIC16F690-I/P (PDIP/ SOIC/ SSOP)
This PIC16F690 is a 20-pin Flash-based 8-bit microcontroller with EEPROM, comparator, SSP (SPI/I2C), ECCP+ (Caputure/Compare/PWM) and EUSART peripheral.
4x4 Keypad is used to allow user to key in decimal number (0-9), (A-D), * and # keys.
Features:
Dimension:

Photos (with iBoard):
Tutorial: