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Component Documentation

How to Use ENC28J60 MINI: Examples, Pinouts, and Specs

Image of ENC28J60 MINI

Design with ENC28J60 MINI in Cirkit Designer

Introduction

The ENC28J60 MINI is a compact Ethernet controller designed to enable microcontrollers to connect to Ethernet networks. It features an integrated Media Access Control (MAC) and Physical Layer (PHY) interface, making it a versatile and cost-effective solution for adding Ethernet connectivity to embedded systems. Its small form factor and SPI interface make it ideal for applications where space and simplicity are critical.

Explore Projects Built with ENC28J60 MINI

STM32F4 and ENC28J60 Ethernet-Enabled Microcontroller Project

Image of youssef: A project utilizing ENC28J60 MINI in a practical application

This circuit integrates an STM32F4 BlackPill microcontroller with an ENC28J60 Ethernet Board to enable Ethernet connectivity. The microcontroller communicates with the Ethernet board via SPI, with connections for power, ground, and SPI signals (SI, SO, SCK, and CS). The provided code is a basic template for further development.

Open Project in Cirkit Designer

I2C-Controlled OLED Display with External EEPROM and Interactive Pushbuttons

Image of godmode: A project utilizing ENC28J60 MINI in a practical application

This is a microcontroller-based interactive device featuring a Wemos D1 Mini, an OLED display, external EEPROM, and an I/O expander. It includes user input buttons and status LEDs, with potential MIDI interface capabilities.

Open Project in Cirkit Designer

Beelink Mini S12 N95 and Arduino UNO Based Fingerprint Authentication System with ESP32 CAM

Image of design 3: A project utilizing ENC28J60 MINI in a practical application

This circuit features a Beelink MINI S12 N95 computer connected to a 7-inch display via HDMI for video output and two USB connections for power and touch screen functionality. An Arduino UNO is interfaced with a fingerprint scanner for biometric input. The Beelink MINI S12 N95 is powered by a PC power supply, which in turn is connected to a 240V power source. Additionally, an ESP32 CAM module is powered and programmed via a USB plug and an FTDI programmer, respectively, for wireless camera capabilities.

Open Project in Cirkit Designer

Arduino Mega 2560-Based Wireless Control System with OLED Display and Rotary Encoder

Image of Tester: A project utilizing ENC28J60 MINI in a practical application

This circuit is a microcontroller-based system using an Arduino Mega 2560 to interface with various peripherals including a rotary encoder, an OLED display, and an NRF24L01 wireless module. It also includes multiple LEDs, pushbuttons, and a power management system with a TP4056 charger and a DC-DC boost converter for battery operation.

Open Project in Cirkit Designer

Explore Projects Built with ENC28J60 MINI

Image of youssef: A project utilizing ENC28J60 MINI in a practical application

STM32F4 and ENC28J60 Ethernet-Enabled Microcontroller Project

This circuit integrates an STM32F4 BlackPill microcontroller with an ENC28J60 Ethernet Board to enable Ethernet connectivity. The microcontroller communicates with the Ethernet board via SPI, with connections for power, ground, and SPI signals (SI, SO, SCK, and CS). The provided code is a basic template for further development.

Open Project in Cirkit Designer

Image of godmode: A project utilizing ENC28J60 MINI in a practical application

I2C-Controlled OLED Display with External EEPROM and Interactive Pushbuttons

This is a microcontroller-based interactive device featuring a Wemos D1 Mini, an OLED display, external EEPROM, and an I/O expander. It includes user input buttons and status LEDs, with potential MIDI interface capabilities.

Open Project in Cirkit Designer

Image of design 3: A project utilizing ENC28J60 MINI in a practical application

Beelink Mini S12 N95 and Arduino UNO Based Fingerprint Authentication System with ESP32 CAM

This circuit features a Beelink MINI S12 N95 computer connected to a 7-inch display via HDMI for video output and two USB connections for power and touch screen functionality. An Arduino UNO is interfaced with a fingerprint scanner for biometric input. The Beelink MINI S12 N95 is powered by a PC power supply, which in turn is connected to a 240V power source. Additionally, an ESP32 CAM module is powered and programmed via a USB plug and an FTDI programmer, respectively, for wireless camera capabilities.

Open Project in Cirkit Designer

Image of Tester: A project utilizing ENC28J60 MINI in a practical application

Arduino Mega 2560-Based Wireless Control System with OLED Display and Rotary Encoder

This circuit is a microcontroller-based system using an Arduino Mega 2560 to interface with various peripherals including a rotary encoder, an OLED display, and an NRF24L01 wireless module. It also includes multiple LEDs, pushbuttons, and a power management system with a TP4056 charger and a DC-DC boost converter for battery operation.

Open Project in Cirkit Designer

Common Applications and Use Cases

IoT devices requiring Ethernet connectivity
Home automation systems
Industrial control and monitoring
Network-enabled sensors and actuators
Embedded web servers for remote control and monitoring

Technical Specifications

Key Technical Details

Operating Voltage: 3.3V (logic level)
Power Consumption: ~180mA (typical)
Communication Interface: SPI (Serial Peripheral Interface)
Data Rate: 10 Mbps (Ethernet)
Integrated MAC and PHY: Yes
Buffer Memory: 8 KB
Operating Temperature: -40°C to +85°C
Dimensions: Compact PCB module (varies by manufacturer)

Pin Configuration and Descriptions

The ENC28J60 MINI module typically has a 10-pin header for interfacing with a microcontroller. Below is the pinout:

Pin	Name	Description
1	VCC	Power supply input (3.3V).
2	GND	Ground connection.
3	CS	Chip Select (active low). Used to enable SPI communication with the module.
4	SCK	SPI Clock. Synchronizes data transfer between the microcontroller and module.
5	SI (MOSI)	Master Out Slave In. SPI data input to the ENC28J60 from the microcontroller.
6	SO (MISO)	Master In Slave Out. SPI data output from the ENC28J60 to the microcontroller.
7	INT	Interrupt output. Signals events like packet reception or transmission errors.
8	WOL	Wake-on-LAN. Used to wake the system via Ethernet (optional, not always used).
9	RESET	Active low reset pin. Resets the ENC28J60 module.
10	NC	Not connected (varies by manufacturer, may be left unconnected).

Note: Always refer to the specific datasheet of your ENC28J60 MINI module for exact pinout details, as variations may exist.

Usage Instructions

How to Use the ENC28J60 MINI in a Circuit

Power Supply: Connect the VCC pin to a 3.3V power source and GND to the ground.
SPI Interface: Connect the SPI pins (CS, SCK, MOSI, MISO) to the corresponding SPI pins on your microcontroller.
Interrupt Pin: Optionally, connect the INT pin to a GPIO pin on your microcontroller to handle interrupts.
Reset Pin: Connect the RESET pin to a GPIO pin or a pull-up resistor for manual or software-controlled resets.
Ethernet Connection: Plug an Ethernet cable into the RJ45 port on the module.

Important Considerations and Best Practices

Voltage Levels: The ENC28J60 operates at 3.3V logic levels. If your microcontroller uses 5V logic, use a level shifter to avoid damaging the module.
SPI Speed: Configure the SPI clock speed to a maximum of 20 MHz for reliable communication.
Decoupling Capacitors: Place decoupling capacitors (e.g., 0.1 µF) near the VCC and GND pins to reduce noise.
Ethernet Cable: Use a high-quality Ethernet cable to ensure stable network communication.
Libraries: Use an ENC28J60-compatible library (e.g., the UIPEthernet library for Arduino) to simplify software development.

Example: Connecting ENC28J60 MINI to Arduino UNO

Below is an example of how to connect the ENC28J60 MINI to an Arduino UNO and use it to serve a basic web page.

Wiring Diagram

ENC28J60 MINI Pin	Arduino UNO Pin
VCC	3.3V
GND	GND
CS	Pin 10
SCK	Pin 13
MOSI	Pin 11
MISO	Pin 12
RESET	Pin 9 (optional)
INT	Pin 2 (optional)

Arduino Code Example

#include <UIPEthernet.h> // Include the ENC28J60 library

// MAC address and IP address for the ENC28J60 module
byte mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED };
IPAddress ip(192, 168, 1, 177);

// Create an Ethernet server on port 80
EthernetServer server(80);

void setup() {
  // Initialize serial communication for debugging
  Serial.begin(9600);
  while (!Serial) {
    ; // Wait for serial port to connect
  }

  // Start the Ethernet connection
  if (Ethernet.begin(mac) == 0) {
    Serial.println("Failed to configure Ethernet using DHCP");
    // Manually configure IP address if DHCP fails
    Ethernet.begin(mac, ip);
  }

  // Start the server
  server.begin();
  Serial.print("Server is at ");
  Serial.println(Ethernet.localIP());
}

void loop() {
  // Listen for incoming clients
  EthernetClient client = server.available();
  if (client) {
    Serial.println("New client connected");
    boolean currentLineIsBlank = true;
    while (client.connected()) {
      if (client.available()) {
        char c = client.read();
        Serial.write(c); // Echo received data to the serial monitor

        // Check for the end of the HTTP request
        if (c == '\n' && currentLineIsBlank) {
          // Send a basic HTTP response
          client.println("HTTP/1.1 200 OK");
          client.println("Content-Type: text/html");
          client.println("Connection: close");
          client.println();
          client.println("<!DOCTYPE HTML>");
          client.println("<html>");
          client.println("<h1>Hello from ENC28J60!</h1>");
          client.println("</html>");
          break;
        }
        if (c == '\n') {
          currentLineIsBlank = true;
        } else if (c != '\r') {
          currentLineIsBlank = false;
        }
      }
    }
    // Give the client time to receive the data
    delay(1);
    client.stop();
    Serial.println("Client disconnected");
  }
}

Note: Ensure the UIPEthernet library is installed in your Arduino IDE before uploading the code.

Troubleshooting and FAQs

Common Issues

No Ethernet Connection:
- Cause: Incorrect wiring or power supply issues.
- Solution: Double-check all connections and ensure the module is powered with 3.3V.
Module Not Responding:
- Cause: SPI communication failure.
- Solution: Verify SPI connections and ensure the correct SPI pins are used.
DHCP Fails:
- Cause: Network configuration issues.
- Solution: Use a static IP address instead of DHCP.
Slow or Unstable Connection:
- Cause: Poor-quality Ethernet cable or electrical noise.
- Solution: Use a shielded Ethernet cable and add decoupling capacitors.

FAQs

Can I use the ENC28J60 MINI with a 5V microcontroller?
- Yes, but you must use a level shifter to convert 5V logic to 3.3V.
What is the maximum Ethernet speed supported?
- The ENC28J60 supports a maximum speed of 10 Mbps.
Is the ENC28J60 MINI compatible with Arduino?
- Yes, it is compatible and can be used with libraries like UIPEthernet.
Can I use the ENC28J60 MINI for PoE (Power over Ethernet)?
- No, the ENC28J60 MINI does not support PoE natively. You would need additional hardware for PoE functionality.