AT89C2051 - 8 bit Microcontroller with 2k Byte Flash
Features:
Compatible with MCS-51 Products
2K Bytes of Reprogrammable Flash Memory
2.7 to 6V Operating Range
Fully Static Operation: 0 Hz to 24 MHz
Two-level Program Memory Lock
128 x 8-bit Internal RAM
15 Programmable I/O Lines
Two 16-bit Time..