Atmel AT89C55 AVR Microcontroller 8-bit

Features:

•  20K Bytes of In-System Reprogrammable Flash Memory  Endurance: 1,000 Write/Erase Cycles
•  Fully Static Operation: 0 Hz to 33 MHz
•  Three-Level Program Memory Lock
•  256 x 8-bit Internal RAM
•  32 Programmable I/O Lines
•  Three 16-bit Timer/Counters
•  Eight Interrupt Sources
•  Low Power Idle and Power Down Modes