Microcontroller: AT89C51ED2
Main Crystal: 29.4912MHz
Speed: Adjustable
Processor Language: 8051
Memory
Program Flash Memory (Internal): 64kBytes
RAM Memory - Scratchpad (Internal): 256 Bytes
RAM Memory - Expanded (Internal): Up to 1792 Bytes
EEPROM Memory (Internal): 2 kBytes
EEPROM Memory (External): up to 256 kBytes (Optional 24LCXX)
Input/Ouput
I/O Points Available: 32
I/O Points Connection: IDCC Connector
Timers
Timers: Yes - Three 16-bit Timers
Programmable Counter Array: Yes - 16-bit
Real Time Clock: Yes - DS1307 Optional
Real Time Clock Battery Backup: Yes
Auxiliary Communication
RS232 Communication: Yes
SPI Communication: Yes
Ancillary Features
In-Circuit Programming: Yes
Power-On Led: Yes - Red
Reset Button: Yes
PSEN Button: Yes
Power Supply
Power-Supply: 5 Vdc
Dimensions
LxWxH: 82mm x 62mm x 25mm (Including mounting supports)
Parts Supplied
Included Parts: AT89C51ED2 Controller, Parallel Download Adapter, Download Software, Manual on CD, Examples and Sample Code,
Data Sheets on CD.