ENC28J60 Ethernet SPI Mini
The ENC28J60 Ethernet SPI (Mini Version) is a module that allows adding Ethernet connection capabilities to microcontrollers and embedded systems through a SPI (Serial Peripheral Interface).
This chip is mainly used in Internet of Things (IoT) projects to facilitate communication in local networks, allowing devices to send and receive data through an Ethernet network. Its compact size and compatibility with numerous microcontrollers make it ideal for applications where an efficient and low-cost network solution is required.
SPECIFICATION AND FEATURES
Type: SPI Ethernet Interface
Main IC: ENC28J60
Connector: RJ45 HR911105A
Microchip Controller: ENC28J60
Speed: 10BASE-T
Interface
Ethernet: 10 Mbps, Duplex (Full – Semi – Half)
Microcontroller: Host by SPI
Protocol: TCP/IP
Oscillator frequency: 25 Mhz
Operating Voltage: 3.3V – 5V DC
Power indicator LED
Operating Temperature: -40°C to 85°C
Dimensions: 51mm x 18mm
Weight: 11g
DOCUMENTATION AND RESOURCES
Datasheet: ENC28J60
Pinout

Connecting the Ethernet Shield to Arduino
Using the ENC28J60 Ethernet module with Arduino is very simple, just make the SPI connection and load the respective library, it is recommended to use the library: EtherCard.
Communication with Arduino is through the SPI bus, so depending on our Arduino board model we must take into account which pins are suitable for SPI.
We must take special consideration with the Chip Select or CS Pin, which although it can be any digital pin, normally pin 10 is used in Arduino Uno, while for Arduino Mega it is pin 53.
In order to connect the ENC28J60 Ethernet to Arduino UNO and MEGA we will follow the following recommendations