Arduino Ethernet Rev3 Without PoE

Product Code: 1891
by Arduino
Sold out
£43.19 inc VAT
£35.99 ex VAT

RETIRED PRODUCT - This product has been retired by the manufacturer and is no longer for sale. This page remains available for it's resources and as a source of potential interest.

The Arduino Ethernet is a microcontroller board based on the ATmega328. It has 14 digital input/output pins, 6 analogue inputs, a 16 MHz crystal oscillator, a RJ45 connection, a power jack, an ICSP header, and a reset button.

The Ethernet differs from other boards in that it does not have an onboard USB-to-serial driver chip, but has a Wiznet Ethernet interface. This is the same interface found on the Ethernet shield.

An onboard microSD card reader, which can be used to store files for serving over the network, is accessible through the SD Library. Pin 10 is reserved for the Wiznet interface, SS for the SD card is on Pin 4.

The 6-pin serial programming header is compatible with the USB Serial adapter and also with the FTDI USB cables or with Sparkfun and Adafruit FTDI-style basic USB-to-serial breakout boards. It features support for automatic reset, allowing sketches to be uploaded without pressing the reset button on the board. When plugged into a USB to Serial adaptor, the Arduino Ethernet is powered from the adaptor.

  • Microcontroller: ATmega328
  • Operating Voltage: 5V
  • Input Voltage Plug: 7-12V
  • Input Voltage Pins (limits): 6-20V
  • Input Voltage PoE (limits): 36-57V
  • Reserved Pins:
    • 10-13: SPI
    • 4: SD Card
    • 2: W5100 interrupt (when bridged)
  • Analogue Input Pins: 6
  • DC Current per I/O Pin: 40mA
  • DC Current for 3.3V Pin: 50mA
  • Flash Memory: 32KB(ATmega328) of which 0.5KB is used by the bootloader
  • SRAM: 2KB (ATmega328)
  • EEPROM: 1KB (ATmega328)
  • Clock Speed: 16MHz

NB: Pins 10, 11, 12 and 13 are reserved for interfacing with the Ethernet module and should not be used otherwise. This reduces the number of available pins to 9, with 4 available as PWM outputs.