egnite - Model Ethernut 3 -ARM Microcontrollers

The third generation of the Ethernut family offers quick response time with minimal power consumption. Running in internal RAM the 32-bit CPU processes around 72 million commands per second and the programmable logic enables the implementation of special hardware interfaces. 8 MByte´s of flash storage and a socket for MMC/SD cards offer sufficient capacity for more challenging tasks.

Like all other Ethernut boards, it provides an extension connector for attaching additional hardware. Hence it is suitable for both the prototyping of your own hardware as well as for direct integration into your finished product.

Ethernut boards come in use where robustness, reliabilty and long-term availability play a vital role. Our in-house quality control procedures guarantee a consistently high level of reliability.

• Fast 32-bit RISC CPU with 256 kByte RAM for CPU-intensive calculations and fast responses
• Programmable logic with 3,200 gates to implement special hardware
• 8 MByte Flash memory for programs and web server content
• 4 MByte non-volatile serial data memory
• Memory mapped Ethernet controller with 100BASE-T connector and Auto-MDIX support
• RS-232 connector to control and monitor external devices
• 14 digital 3.3 V I/O ports, additionally offers counter I/O and USART
• 24 digital I/O ports as external memory bus or programmable 3.3 V logic, 5 V tolerant
• Multimedia/SD card slot to easily exchange data
• JTAG connector for programming and debugging
• Single 5-24 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 3.1, 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 about 100 kByte Flash and 20 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.

The entire source code for the target system, as well as the hardware design, have a permissive BSD Licence. This is available for commercial products without any licence fees.

In contrast to some other Open Source licence models, there is no obligation to publish your own source code enhancements.

Processor
CPU: AT91R40008, 73.728 MHz Clock
Flash memory: External 4 MByte
Static RAM: Internal 256 kByte
Serial Flash: External 4 MByte
RTC: Hardware (PCF8563T)

Interfaces
Ethernet: RJ-45 10/100Base-T (DM9000A)
RS-232: 1 x 9-pin DcE 8-Wire, 1 x TTL/CMOS
Digital I/O: 17 configurable GPIO lines with alternate functions
Analog I/O: None available
Programming: 10-pin JTAG
Indicators: Power (red), link (yellow), activity (green), user (green)

Power supply
Regulator: 600 mA switcher (LT1616)
Input: 2.1 mm barrel connector, unregulated 7 to 24 V DC
Expansion Port: 5 to 24 V unregulated or 3.3 V regulated, output > 1 W
Consumption: < 1.2 W at 12 V
Battery Backup: Double layer cap for realtime clock

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

Environmental
Operating temperature: 0 to 70 °C (32 to 158 °F)
Storage temperature: -65 to 140 °C (-85 to 284 °F)
Humidity: 5 to 95 %, non-condensing

Approvals
Safety: PCB flammability rating UL94-V-0
RoHS compliance: EU directive 2002/95/EC

Metrics
Dimensions ( Lx W x H): 98 x 78 x 17 mm (3.86 x 3.07 x 0.67 in)
Weight: 61 g (0.134 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)