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Microcontroller board with Ethernet, MMC/SD card interface and USB
This project is a basis for developing microcontroller applications connected to an ethernet network.
Hardware components already integrated on the reference design include:
- Atmel ATmega128 RISC microcontroller with standard 10-pin ISP header
- 64 kByte of external SRAM
- USB <-> RS232 interface
- SD/MMC socket
- Ethernet interface with ENC28J60 (IEEE 802.3, 10Base-T)
The hardware design is expandable by connecting additional components to the existing pin header. Several digitial I/Os, A/D inputs as well as the standard SPI and I2C (TWI) serial interfaces are available for user-defined purposes.
The curcuit board is designed as a two-layer board of size 100mm x 80mm. Most components use SMD packages.