Product Parameters

​​Core Chip​​: ENC28J60-I/SS ( Microchip, SPI Interface Independent Ethernet Controller)

​​Operating Voltage​​: 3.3V DC ±10% (External LDO Required, Input Range 4.5V-5.5V, Prohibited >5.5V)

​​Communication Rate​​: Up to 25MHz SPI Clock, 10Mbps Ethernet Transmission (IEEE 802.3 Standard)

​​Interface Type​​: HR911105A Network Interface (Built-in Isolation Transformer, Support 10BASE-T); 6P SPI Interface (Compatible with 3.3V/5V Logic Level, Need Level Conversion)

​​Storage Resource​​: 8KB Send/Receive Buffer (Dual Port SRAM)

​​Clock Source​​: 25MHz Crystal Oscillator (Built-in Oscillator, Temperature Drift ±50ppm)

​​Power Consumption​​: Working Mode 72mA (Typical), Sleep Mode

​​Working Temperature​​: -40℃ to 85℃ (Reliable Wide Temperature)

Main Pin Functions ( )

​​VCC (Pin 1)​​: 3.3V power input (ripple peak value

​​GND (Pin 2/9)​​: Power supply ground

​​SCK (Pin 3)​​: SPI clock input (master mode ≤25MHz)

​​SO/MISO (Pin 4)​​: Master device input/slave device output

​​SI/MOSI (Pin 5)​​: Master device output/slave device input

​​CS (Pin 6)​​: Chip select signal (active low)

​​INT (Pin 7)​​: Interrupt output (low level trigger)

​​RESET (Pin 8)​​: Hardware reset (active low >1μs)

Key Design Specifications:

SPI bus speed >10MHz: Enable slope control mode (configure ECON1 register)

HR911105A interface differential wire pairs need twisted-pair wiring with impedance matching of 100Ω ±10%