Ethernut, Nut/OS and Accessories
ETHERNUT - SINGLE BOARD COMPUTERS
Compare the essential features of the Ethernut boards. In depth information for each model can be found on the product page.
| Models | Elektor Internet Radio | Ethernut 5 | Ethernut 3 | Ethernut 2 | Ethernut 1 |
| 32-bit SBC with huge amounts of memory for streaming media applications. | Internet-capable 32-bit SBC with extended working temperature range and Linux support for industrial deployment. | Internet-capable 32-bit SBC with programmable hardware for quick response times at minimal power usage. | Internet-capable 8-bit SBC with extended temperature range for industrial applications. | Internet-capable 8-bit SBC with minimalistic hardware for cost-efficient solutions. | |
| Processor | |||||
| CPU | AT91SAM7SE512 | AT91SAM9XE512 | AT91R40008 | ATmega128 | ATmega128 |
| Family | ARM7TDMI | ARM926EJ-S | ARM7TDMI | AVR | AVR |
| Ext. data bus | 16 bit | 32 bit | 16 bit | 8 bit | 8 bit |
| Clock | 48 MHz | 180 MHz | 73.728 MHz | 14.7456 MHz | 14.7456 MHz |
| Memory | |||||
| Static RAM | 32 kB | 32 kB | 256 kB | 48 kB | 32 kB |
| Banked RAM | - | - | - | 464 kB | - |
| SDRAM | 64 MB | 128 MB | - | - | - |
| Program flash | 512 kB | 512 kB | 4 MB | 128 kB | 128 kB |
| NAND flash | - | 1 GB | - | - | - |
| Serial flash | 4 MB | 4 MB | 4 MB | 512 kB | - |
| EEPROM | - | - | - | 4 kB | 4 kB |
| Extern | SD / MMC | SD / MMC | SD / MMC | - | - |
| Connectors | |||||
| Ethernet | 10/100BaseT | 10/100BaseT Audio MDIX | 10/100BaseT | 10/100BaseT | 10BaseT |
| RS-232 | 4-wire 9-pin DTE | 8-wire 9-pin DTE | 8-wire 9-pin DTE | 4-wire 9-pin DTE | 2-wire 9-pin DTE |
| RS-485 | - | - | - | 2-wire | - |
| USB device | 12 Mb : 1 | 12 Mb : 1 | - | - | - |
| USB host | - | 12 Mb : 1 | - | - | - |
| Expansion port | |||||
| Memory bus | Full | 64 k x 8 | CPLD I/O | 11 k x 8 | 31 k x 8 |
| Digital I/O | 3.3 / 5 V : 16 | 3.3 V : 20 | 3.3 V : 17 | 5 V : 20 | 5 V : 21 |
| CPLD I/O | - | - | 3.3 / 5 V : 38 | - | - |
| Analog in | 4 x 10 bit | 2 x 10 bit | - | 8 x 10 bit | 8 x 10 bit |
| PWM | 3 | 2 | 2 | 2 | 2 |
| UARTs | 3 | 2 | 2 | 2 | 2 |
| SPI | 1 | 1 | software | 1 | 1 |
| TWI (I2C) | 1 | 1 | software | 1 | 1 |
| SSC | 1 | 1 | - | - | - |
| Other peripherals | |||||
| Real time clock | DLC backup | DLC backup | DLC backup | software | software |
| Watchdog | yes | yes | yes | yes | yes |
| Audio decoder | MP3, Ogg Vorbis and more | - | - | - | - |
| Audio encoder | Ogg Vorbis | - | - | - | - |
| Image sensor | - | 2048 x 2048 | - | - | - |
| Programming / debugging interface | |||||
| SPI | - | - | - | - | 10-pin |
| JTAG | 20-pin | 20-pin | 10-pin | 10-pin | 10-pin |
| Recommended programmer | USB Kabel | USB Kabel | Turtelizer 2 | SP Duo 2 | SP Duo 2 |
| Recommended debugger | Any 20-pin ARM JTAG | Any 20-pin ARM JTAG | Turtelizer 2 | AVR JTAGICE | AVR JTAGICE |
| Power supply | |||||
| Barrel connector, 2.1 mm | 5 – 24 V | 5 – 24 V | 5 – 24 V | 9 – 12 V | 9 – 12 V |
| USB | - | yes | - | - | - |
| PoE | - | 802.3 af | - | - | - |
| Max. consumption | 1.2 W | 3.2 W | 1 W | ||
| Fuse protection | 0.5 A | 0.5 A | 0.5 A | 1 A | 1 A |
| Environmental | |||||
| Operating temperature | 0 to 70 °C 32 to 158 °F | -20 to 85 °C -4 to 185 °F | 0 to 70 °C 32 to 158 °F | -40 to 85 °C -40 to 185 °F | 0 to 70 °C 32 to 158 °F |