Ethernet Controller Mini W5500 Module with 80 MHz SPI Interface
The W5500 Ethernet Controller Module is a compact, high-performance embedded Ethernet solution designed for microcontrollers and embedded systems. Featuring an 80 MHz high-speed SPI interface and an integrated hardware TCP/IP stack, the module enables reliable Ethernet connectivity without requiring users to implement complex network protocols in software.
Key Features of W5500 Module
- 80 MHz high-speed SPI interface for fast data communication
- Integrated hardware TCP/IP protocol stack, minimizing the need for complex networking code
- Supports up to 8 simultaneous Socket connections
- Supports TCP, UDP, ICMP, IPv4, ARP, IGMP, and PPPoE protocols
- Integrated data link layer and physical layer
- Supports power-down / wake-up operation
- High-speed serial peripheral interface with SPI Mode 0 and Mode 3
- Built-in 32 KB transmit and receive buffer memory
- Integrated 10BASE-T / 100BASE-TX Ethernet PHY
- Supports automatic Ethernet negotiation for 10/100 Mbps full-duplex and half-duplex modes
- IP fragmentation is not supported
- 3.3 V operating voltage with 5 V-tolerant I/O signals
- LED indicators for full/half duplex status, network connection, link speed, and activity
- Compact pin-header package, ideal for embedded and space-constrained applications
- C language application examples are provided for quick development
Product Specifications of this mini w5500 module
| Specification | Details |
|---|---|
| Power Supply | 3.3 V external power supply |
| Recommended Supply Current | Greater than 200 mA |
| Control Interface | 3.3 V TTL level, SPI interface |
| Header | 2 × single-row pin headers |
| PCB Dimensions | 23 × 25 mm |
| Mechanical Dimensions | 28.5 × 23 × 24 mm (L × W × H) |
| Ethernet Speed | 10/100 Mbps |
| SPI Clock | Up to 80 MHz |
| SPI Modes | Mode 0 and Mode 3 |
| Socket Connections | Up to 8 |
| Buffer Memory | 32 KB TX/RX buffer |
| Ethernet PHY | Integrated 10BASE-T / 100BASE-TX PHY |

Pin Description
GND — Ground / power negative
VIN3.3 — 3.3 V positive power input
PWDN — Power-down mode control pin
- High level: Power-down mode enabled
- Low level: Normal operating mode
nRESET — Active-low reset input used to reset and reinitialize the W5500 Ethernet controller.
MISO — SPI master input / slave output
MOSI — SPI master output / slave input
SCLK — SPI clock input
nSS — SPI chip-select input, active low
nINT — Interrupt output, active low
Applications
This mini w5500 module is suitable for a wide range of embedded networking applications, including:
- Industrial Ethernet devices
- Embedded network controllers
- IoT and smart devices
- Remote monitoring and control systems
- Ethernet-enabled microcontroller projects
- Data acquisition systems
- Network-connected sensors
- Automation and control equipment
- TCP/IP-based embedded applications
- Custom embedded Ethernet products
We not only supply this mini w5500 module but also provide other products, if you are looking for electronic parts supplier, contact us.


















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