Summary
AT89C51 is a low-power, high-performance CMOS 8-bit microcontroller that belongs to Atmel's 8051 family. AT89C51 has 4KB of Flash programmable and erasable read only memory (PEROM) and 128 bytes of RAM. It can be erased and program to a maximum of 1000 times.It's Compatible with MCS-51™ Products.
\Specification
Flash Memory : 4K Bytes
CPU:8-Bit
Maximum Operating Voltage:6.6V
Maximum Ocsillator Frequency: 0 Hz to 24 MHz
Internal RAM:128 x 8-Bit
Programmable I/O Lines:32
Timer/Counters:Two, 16-Bit