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AT91SAM9XE512 Board, Ethernet, USB, RS232, SD Card (Ethernut 5) US$235.00

AT91SAM9XE512 Board, Ethernet, USB, RS232, SD Card (Ethernut 5)

The Ethernut 5 is a single-board computer and webserver with an ARM9 CPU. Atmel's AT91SAM9XE512 CPU provides a large number of peripherals, like 10/100Mbit Ethernet, USB 2.0, CMOS image sensor, SDcard/SDIO/MMC, IrDA, I2S, ADC, TWI and SPI. Like other members of the Ethernut family, the board provides an extension connector for attaching additional hardware. This board therefore is suitable for prototyping your own hardware design or being directly integrated into your final product.

The integrated Flash memory can be protected against external access and is complemented by 1GB NAND Flash, 128MB SDRAM and 4MB serial Flash. This may be further increased by using the MMC/SDcard slot.

For power supply, a conventional DC input of 7-24V is available. Alternatively, the USB or Ethernet cable may be used as well. Flexible power management is done by a dedicated ATmega168 CPU. The real-time clock is backed up by a double-layer capacitor.

Ethernut 5 Features

  • 32-bit RISC CPU with 200 MHz clock and internal protected Flash memory
  • 1 GByte NAND Flash and 128 MByte SDRAM, sufficient for running Linux
  • 4 MByte non-volatile serial data memory
  • Ethernet controller with 100BASE-T connector, supports Auto-MDIX and 802.3af PoE
  • USB 2.0 Host controller to connect external USB devices
  • USB 2.0 Device port to connect to a PC, optional power supply
  • RS-232 connector to control and monitor external devices
  • Expansion port with 15 digital 3.3V I/O ports, including counter I/O, USART, SPI, I2C and PWM
  • FFC connector for image sensors
  • Simple memory expansion bus
  • Two inputs to monitor analog values
  • Real-time clock with double layer capacitor backup
  • Multimedia/SD card slot to transfer data easily
  • 20-pin JTAG connector for programming and debugging
  • Intelligent power management for power supply via USB, Ethernet or external 5-24V


Application development is done in the high-level programming language C, using free GNU tools. An active Open Source community created Nut/OS, a cooperative RTOS with TCP/IP stack specially designed with low memory consumption in mind. The well documented and tested code provides a convenient, portable API. Programmers familiar with C for desktop PCs will soon feel comfortable with its standard C library functions. Although well pre-configured for Ethernut 5.0, an easy-to-use graphical interface is available on Linux, Windows and OS X PCs to adapt the system to special requirements with just a few mouse clicks.

In addition to Nut/OS, the Linux operating system is available for Ethernut 5. One available board support package is based on the Ångström distribution. Ethernut 5 comes ready to use with a pre-installed Linux BSP based on the Yocto Project.


Several companies with many years of experience in Nut/OS software and Ethernut hardware offer commercial support. Furthermore, mailing lists are an important element of this Open Source project, where developers use each other's experience to help solving respective problems.


All Nut/OS target source code as well as the hardware design are published under the permission-free BSD License and can be used in commercial products for any purpose without license fees. In contrast to some other Open Source license models, it does not require you to publish your own source code enhancements.

Development tools and the Linux operating system are published under the GNU Public License Version 2.


CPU AT91SAM9XE, 200 MHz clock
NOR Flash memory Internal 512 kByte
NAND Flash memory External 1 GByte
Serial Flash memory External 4 MByte
Static RAM Internal 32 kByte
SDRAM External 128 MByte
RTC Hardware (PCF8563T)
Ethernet RJ45 10/100BaseT (LAN8710)
USB USB 2.0 device at Mini-B and host at Standard-A receptacle
RS-232 1x 9-pin DCE, 8-Wire
Memory card SD card / SDIO / Multimedia card socket
Digital I/O 15 configurable GPIO lines with alternate functions
Analog I/O 2 channels with external trigger and reference
Programming 20-pin JTAG
Indicators Power (red), link (yellow), activity (green)
Power supply
Regulator 600 mA switcher (LT1616, LTC3407, LTC4411)
Management ATmega168 CPU
DC input 2.1mm barrel connector, unregulated 5V to 24V DC
USB USB Mini-B, 5V
Ethernet IEEE 802.3af
Consumption Less than 1W at 12V
Battery backup Double-layer capacitor for RTC
RS-232, USB 15kV ESD protection
Ethernet Transformer isolation
Power Supply 1A replaceable fuse, rectifier bridge, current limiter, thermal shutdown
Operating temperature -20 to +85 °C (-4 to 185 °F)
Storage temperature -65 to +140 °C (-85 to +284 °F)
Humidity 5% to 95% non-condensing
Safety PCB inflammability rating UL94-V-0
RoHS compliance EU directive 2002/95/EC
Dimensions (L × W × H)   98 × 78 × 17 mm (3.86 × 3.07 × 0.67 in)
Weight 75 g (0.165 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)

Ethernut 5 Resources

The hardware JTAG Debugger shown in the user manual is the Turtelizer 2 with the JTAG Connector 2 adapter.

Optional Recommended Products for this Item
Ethernut I/O Expansion Board: 8 Isolated I/O, Solid-State Relays+ US$102.00
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
Ethernet Cable, CAT5E 350MHz Unshielded, 7ft.+ US$3.60
Ethernet Crossover Cable, CAT5E 350MHz Unshielded, 5ft.+ US$7.00
USB 2.0 Cable, 6ft. A-Male / Mini-USB (5-pin) B-Male+ US$6.00
Serial Cable, 6ft., DB9 M/F+ US$6.00

This product was added to our catalog on Monday 06 October, 2014.


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