ENC28J60 SPI to Ethernet LAN Network Module Shield

ENC28J60 ETHERNET LAN NETWORK MODULE SHIELD is a compact and cost-effective 10BASE-T Ethernet expansion shield based on the Microchip ENC28J60 stand-alone Ethernet controller. Designed with an industry-standard Serial Peripheral Interface (SPI), it equips Arduino UNO, Mega, and compatible microcontrollers with local network connectivity, web server hosting, and IoT data publishing capabilities through an integrated RJ45 modular jack.

Key Features:

• Stand-Alone Ethernet Controller: Microchip ENC28J60 IC featuring an integrated MAC and 10BASE-T Physical Layer (PHY).
• Standard SPI Interface: High-speed SPI interface supporting clock rates up to 20 MHz for fast packet transfer.
• Integrated Magnetics RJ45: Built-in HR911105A RJ45 network jack with internal isolation transformer and LED link/activity status indicators.
• Dedicated Buffer Memory: Onboard 8 KB dual-port SRAM packet buffer for storing transmit and receive network frames.
• Arduino Form Factor: Engineered as a stackable shield that plugs directly onto Arduino UNO boards without flying wire harnesses.
• Open-Source Library Support: Compatible with popular Arduino network libraries including EtherCard, UIPEthernet, and Arduino Ethernet implementations.

Technical Specifications:

• Network Standard: IEEE 802.3 compliant 10BASE-T Ethernet (10 Mbps)
• Host Interface: SPI (Serial Peripheral Interface) Mode 0,0 up to 20 MHz
• Controller IC: Microchip ENC28J60-I/SO
• Buffer RAM: 8 Kilobytes dual-port SRAM for packet buffering
• Operating Voltage: 5V DC (onboard 3.3V low-dropout voltage regulator supplies the ENC28J60 core)
• Operating Current: 160 mA typical, 250 mA peak during transmission
• Status Indicators: RJ45 Green (Link) and Yellow (Activity) LEDs, onboard power LED

Mechanical Specifications:

• Form Factor: Arduino UNO R3 footprint compatible shield
• Connector: Standard female stackable headers and shielded RJ45 connector
• PCB Material: FR4 double-sided fiberglass board with blue solder mask
• Mounting: Direct stack mounting on Arduino UNO / Leonardo
• Weight: Approximately 25 g

Dimensions:

• Overall Length: 68.0 mm
• Overall Width: 53.0 mm
• Overall Height: 24.0 mm (including RJ45 jack)

Pinout and Wiring:

• SPI MOSI: Arduino digital pin D11 (Master Out Slave In)
• SPI MISO: Arduino digital pin D12 (Master In Slave Out)
• SPI SCK: Arduino digital pin D13 (Serial Clock)
• Chip Select (CS): Arduino digital pin D10 (or jumper-selectable D8)
• Interrupt (INT): Arduino digital pin D2 (optional hardware packet reception interrupt)
• Reset (RST): Connected to Arduino hardware Reset pin
• Power: 5V and GND supplied via standard Arduino power bus

Datasheet Reference:

• Refer to the Microchip ENC28J60 Stand-Alone Ethernet Controller with SPI Interface datasheet for low-level register descriptions, packet buffer memory architecture, and MAC filtering rules.

Commonly Used in:

• Local web servers hosting real-time sensor dashboards and relay switching controls
• Industrial telemetry units transmitting Modbus/TCP or MQTT data packets over LAN
• Home automation gateways connecting microcontrollers to home routers and switches
• Remote embedded diagnostics, ping testing, and network watchdog appliances

Applications:

• Embedded Arduino web server
• IoT LAN sensor telemetry gateway
• Remote IP-based relay control
• Network uptime monitor and automated ping responder
• Ethernet-to-Serial bridge for legacy machinery

Equivalent Models:

• Arduino Ethernet Shield (W5100 based)
• W5500 Ethernet Shield for Arduino
• ENC28J60 Mini SPI Module (breakout board form factor)
• Keyestudio W5100 Ethernet Shield

Package Includes:

• 1 × ENC28J60 ETHERNET LAN NETWORK MODULE SHIELD