AT89C51RE2 Development Board - Technical

Microcontroller

• Microcontroller: AT89C51RE2-UM
• Main Crystal: 18.432MHz
• Speed: 18.432MHz
• Processor Language: 8051

Memory

• Program Flash Memory (Internal): 128kBytes
• RAM Memory (Internal): 8kBytes
• Scratchpad RAM (Internal): 256 Bytes

Input/Output

• I/O Points Available: 34
• I/O Points Connection: 4 x 10 Way IDCC Connectors
• LCD Connection: 14 Way IDCC Connector with Trimpot Contrast Adjustment
• I²C Connection: 4 Way Header Connector
• RS232 Connection: 2 x 4 Way Polarized Connector
• RS422/RS485 Connection: 6 Way Polarized Connector

Clocks

• Real Time Clock: DS1307 (Optional)
• Real Time Clock Crystal: 32.7kHz
• Battery Back-Up: Yes - 1.5V Watch Battery (Optional)

Communication

• RS232 Communication: Yes - 2 Channel
• RS422 Communication: Yes - (75176 Optional)
• RS485 Communication: Yes - (75176x2 Optional)

Ancillary Features

• In-Circuit Programming: Yes
• Power-On LED: Yes - Red
• Reset Button: Yes
• PSEN Button: Yes
• On-Board Power Supply Regulator: Yes

Power Supply

• Power-Supply: 9 - 12 Vdc
• Power-Supply Input: 2 Way Polarized Header or Power Jack

Dimensions

• LxWxH: 155mm x 90mm x 42mm

Parts Supplied

• Included Parts: AT89C51RE2 Development Board, Download Cable, Download Software, Manual on CD, Examples and Sample Code, Datasheets on CD.

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