Welcome to Futurlec. The ELECTRONIC COMPONENTS Superstore. To find the component your looking for, either search by Part Number or visit the relative department. Need Help. CONTROLLERS Web Control Board - Technical Data • Microcontroller: AT89C51RD2 • Main Crystal: 18.432MHz • Speed: 18.432MHz • Processor Language: 8051 Memory • Program Flash Memory (Internal): 64kBytes • RAM Memory (Internal): 256 Bytes • EEPROM Memory (Internal): None • EEPROM Memory (External): 64kBytes (4x24C515 Optional) Input/Ouput • I/O Points Available: 16 • I/O Points Connection: IDCC Connectors Clocks • Real Time Clock: DS1307 (Optional) • Real Time Clock Crystal: 32.768kHz • Battery Back-Up: Yes - 1.5V Watch Battery (Optional) Lan/Internet Communication • Interface Control IC: RTL8019AS • Crystal: 20.000MHz • Isolation Transformer: Yes Auxiliary Communication • RS232 Communication: Yes • RS485 Communication: Yes - (75176 Optional) • RS488 Communication: Yes - (75176x2 Optional) Ancillary Features • In-Circuit Programming: Yes • Power-On Led: Yes - Red • Link Led: Yes - Red • Receive(Rx) Led: Yes - Green • Transmit(Tx) Led: Yes - Yellow • Reset Button: Yes • PSEN Button: Yes • Interrupt Button (INT0): Yes Power Supply • Power-Supply: 9 - 12 Vdc Dimensions • LxWxH: 155mm x 90mm x 42mm Parts Supplied • Included Parts: Web Control Board, Network Cable, RS232 Cable, Download Software, Manual on CD, Examples and Sample Code, Data Sheets on CD. |  Main Page  |  Technical Data  |  Accessories  |  Tips and Tricks  |