OVERVIEW
The ENC28J60 is a stand-alone Ethernet controller with an industry standard Serial Peripheral Interface (SPI). It is designed to serve as an Ethernet network interface for any controller equipped with SPI.

Ethernet Controller Features
• IEEE 802.3 compatible Ethernet controller
• Integrated MAC and 10BASE-T PHY
• Supports one 10BASE-T port with automatic polarity detection and correction
• Supports Full and Half-Duplex modes
• Programmable automatic retransmit on collision
• Programmable padding and CRC generation
• Programmable automatic rejection of erroneous packets
• SPI Interface with clock speeds up to 20 MHz

Buffer
• 8-Kbyte transmit/receive packet dual port SRAM
• Configurable transmit/receive buffer size
• Hardware-managed circular receive FIFO
• Byte-wide random and sequential access with auto-increment
• Internal DMA for fast data movement
• Hardware assisted checksum calculation for various network protocols

Medium Access Controller (MAC) Features
• Supports Unicast, Multicast and Broadcast packets
• Programmable receive packet filtering and wake-up host on logical AND or OR of the following:
   - Unicast destination address
   - Multicast address
   - Broadcast address
   - Magic Packet™
   - Group destination addresses as defined by 64-bit hash table
   - Programmable pattern matching of up to 64 bytes at user-defined offset

Physical Layer (PHY) Features
• Loopback mode
• Two programmable LED outputs for LINK, TX, RX, collision and full/half-duplex status

Operational
• Six interrupt sources and one interrupt output pin
• 25 MHz clock input requirement
• Clock out pin with programmable prescaler
• Operating voltage of 3.1V to 3.6V (3.3V typical)
• 5V tolerant inputs
• Temperature range: -40°C to +85°C Industrial, 0°C to +70°C Commercial (SSOP only)
• 28-pin SPDIP, SSOP, SOIC, QFN packages