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AVR I/O Board, 4x Relay, 4x Opto Inputs, RS232, ISP US$36.95

AVR-IO
AVR I/O Board, 4x Relay, 4x Opto Inputs, RS232, ISP


Development board for 20-pin AVR microcontrollers with 4 relay outputs, 4 optocoupler isolated inputs, RS232 serial interface (Rx/Tx) and on-board 5V voltage regulator. A 10-pin ISP connector allows programing using an STK500 compatible programmer.

The board ships completely assembled and tested, but does not include an AVR microcontroller.

AVR I/O Board Features

  • 4 Optocoupler isolated inputs with screw terminals and input status LEDs
  • 4 Relay outputs with 5A/250VAC contacts with screw terminals and output status LEDs
  • Status LED connected to PB4
  • DIL20 microcontroller socket
  • 5x2 pin STK500 compatible ISP connector (top view on target board) for In-System Programming with an AVR ISP Programmer
  • RS232 interface circuit with Tx, Rx signals and DB9 female connector
  • 5.5mm/2.1mm coax power plug-in jack
  • Voltage regulator +5V, 78L05 with plug-in power jack for use with a single 12VDC power supply.
  • Quartz crystal oscillator circuit 10 MHz
  • RESET supervisor IC ZM33064 with 4.6V threshold.
  • FR-4, 1.5 mm (0.062"), green soldermask, white silkscreen component print, four mounting holes 3.3 mm (0.13")
  • Dimensions: 100 x 80 mm (3.9 x 3.15")

AVR I/O Board Schematics

Supported AVR Microcontrollers

Ships from: USA
Leadtime: In stock


Optional Recommended Products for this Item
Atmel ATtiny2313-20PU AVR Microcontroller, 20 DIP, 20 MHz+ US$1.77
Serial Cable, 6ft., DB9 M/F+ US$6.00
Power Supply 12V DC, 0.75A, 220V Euro plug, pos. inner+ US$9.00
Power Supply 3-12V DC, U.S. plug, 6 connection tips+ US$11.00
Power Supply 3-12V DC, US/UK/Euro/AU Plugs, 100-240VAC+ US$13.00

This product was added to our catalog on Thursday 17 June, 2004.

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