AT89C51ED2 Controller Board - Technical

Microcontroller

• Microcontroller: AT89C51ED2
• Manufacturer: Atmel / Microchip
• 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/Output

• I/O Points Available: 32
• I/O Points Connection: IDCC Connector

Clocks/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

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, Datasheets on CD.

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