egnite - Ethernut Bulk 2.1

egnite - Ethernut Bulk 2.1

Manufacturer: egnite

Order number: EGN101210


Delivery time 45 Workdays

€ 148.75 *
incl. 19% VAT
€ 125.00 *
excl. VAT

Included in delivery

  • Ethernut Bulk 2.1

Product information

Ethernut 2 is a development board for embedded Ethernet applications. The single board computer combines the AVR ATmega128 with a 100 MBit Ethernet interface. The board has 512 Kbytes of RAM and can be programmed in the higher programing language C.
The extended temperature range from -40 °C to 85 °C and the additional RS-485 interface make Ethernet 2 suitable for the use in industrial applications.
Like every other Ethernut board it provides an extension connector for attaching additional hardware.
Ethernut boards are robust, reliable and long-term available. Hence they can be directly integrated into your final products.


  • Low power, high performance RISC CPU
  • 128 kByte Flash memory and 512 kByte bank-switched RAM
  • Memory mapped Ethernet controller with 100BASE-T connector
  • RS-232 and RS-485 connector to control and monitor external devices
  • Expansion port with 20 digital 5V I/O ports, including counter I/O, USART, SPI, I2C or PWM
  • 8 inputs to monitor analog values
  • Memory expansion bus
  • JTAG connector for programming and debugging
  • Industrial grade temperature range
  • Single 9-12 V power supply


  • Application development is carried out in the high level programming language C, using either free GNU tools or the commercially supported ImageCraft compiler.
  • An active Open Source community developed and managed Nut/OS, a cooperative multithreading operating system with TCP/IP stack, which was specially designed with tiny embedded systems in mind. The well documented source code provides a convenient user interface, which is very similar to the C programming of desktop PC’s. Programmers will therefore quickly feel at ease operating this.
  • Although pre-configured for Ethernut 2.1, all important settings can be customized with just a few mouse clicks with an easy to use graphical interface available on Linux, Windows and Mac OS X PCs incorporating any special requirements. A complete Internet enabled web server needs less than 60 kByte Flash and 12 kByte RAM. This leaves enough space for ambitious product ideas, including a boot loader for the update of firmware via the network. Many useful example applications are included in the distribution.

Onward links

Ethernut 2 Product Page Ethernut Open Source Hardware and Software Project Nut/OS Open Source RTOS Further products by egnite

Available downloads

Download Ethernut 2 Flyer English Download Ethernut 2 Flyer Deutsch

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CPU ATmega128-16AU, 14.7456 MHz clock
Flash memory Internal 128 kByte
EEPROM Internal 4 kByte
Static RAM External 512 kByte
Serial Flash External 512 kByte
RTC Software with 32.768 kHz crystal


Ethernet RJ-45 10/100BaseT (LAN91C111)
RS-232 1 x 9-pin DCE, 4-Wire
RS-485 Half duplex
Digital I/O 20 configurable GPIO lines with alternate functions
Analog I/O 10-bit ADC, 8 multiplexed inputs with alternate functions
Programming 10-pin JTAG
Indicators Power (red), link (yellow), activity (green)

Power Supply

Regulator Linear 1.5 A LDO (LM1086)
Input 2.1 mm barrel connector, unregulated 9 to 12 V DC
Expansion port 9 to 12 V unregulated or 5 V regulated, output > 4 W
Consumption < 3 W at 9 V
Battery backup None


RS-232 15 kV ESD protection
RS-485 15 kV ESD protection
Ethernet Transformer isolation
Power supply 1 A replaceable fuse, rectifier bridge, current limiter, thermal shutdown


Operating temperature -40 to 85 °C (-40 to 185 °F)
Storage temperature -65 to 140 °C (-85 to 284 °F)
Humidity 5 to 95 %, non-condensing


Immunity EN 61000-6-1:2001
EN 61000-6-2:2001
Emission EN 61000-6-3:2001
EN 61000-6-4:2001
Safety PCB flammability rating UL94-V-0
RoHS compliance EU directive 2002/95/EC


Dimensions (L x W x H) 98 x 78 x 17 mm (3.86 x 3.07 x 0,67 in)
Weight 64 g (0.141 lb)

Product Identification

PCB revision Written in copper on the PCB's backside
Serial number IEEE registered MAC Address on barcode sticker label (Code 128C)