Microchip ENC28J60-I/SO Ethernet Controller, SPI, 28SOIC

The Microchip ENC28J60-I/SO is a stand-alone Ethernet controller designed to provide a simple and efficient network interface for any microcontroller equipped with a serial peripheral interface (SPI). It meets all IEEE 802.3 specifications, ensuring reliable and standard-compliant network connectivity. With an integrated MAC and 10BASE-T PHY, this controller simplifies hardware design and reduces component count.

This device features an 8-Kbyte transmit/receive packet dual-port buffer, an internal DMA module for fast memory copying, and hardware-assisted IP checksum calculation to offload the host controller. Programmable automatic retransmission on collision helps improve data integrity, while the programmable pattern matching (up to 64 bytes at a user-defined offset) allows for efficient packet filtering. Communication with the host is via the SPI interface, supporting clock rates up to 20MHz, and two dedicated pins for LED link and network activity indication.

The controller operates over a wide voltage range of 3.1V to 3.6V and is housed in a 28-lead SOIC package, suitable for surface-mount applications. It is rated for industrial temperature ranges from -40°C to +85°C, making it ideal for harsh environments. The ENC28J60-I/SO is a versatile solution for embedded networking, enabling applications such as VoIP, industrial and building automation, home control, and security systems.

Key Specifications

• Interface: SPI (Serial Peripheral Interface) with clock speeds up to 20MHz
• Supported Standards: IEEE 802.3, 10BASE-T
• Integrated MAC and PHY
• Packet Buffer: 8-Kbyte transmit/receive dual port
• Internal DMA for fast memory copying
• Hardware-assisted IP checksum calculation
• Programmable automatic retransmit on collision
• Operating Voltage: 3.1V to 3.6V
• Package: 28-lead SOIC, Surface Mount
• Operating Temperature: -40°C to +85