Ethernet shield based on ATMega644 micro-controller and ENC28J60 network chip
- Two Wire (I2C)
- Universal Synchronous and Asymchronous serial Receiver and Transmitter (USART)
- Serial Peripheral Interface (SPI)
- Link layer
- Adres Resolution Protocol (ARP, rfc826)
- Internet layer
- Transport Layer
- User Datagram Protocol (UDP, rfc768)
- Application layer
- Transmission Control Protocol (TCP, transport layer, rfc793)
- Network Time Protocol (NTP, application layer, rfc958)
- Domain Name System (DNS, application layer, rfc1035)
- Hypertext Transfer Protocol (HTTP, application layer, rfc2616)
- Extensible Messaging and Presence Protocol (XMPP, application layer, rfc6120)