W5500 Ethernet Kit for IoT

W5500 Ethernet Kit for IoT is designed using the WIZnet W5500 chip. And compatible with Arduino and ARM mbed Platform.

Hello World

Import programW5500HelloWorld

TCP Echo example of W5500 Ethernet Kit for IoT.


Import programW5500HelloWorld

TCP Echo example of W5500 Ethernet Kit for IoT.




Official Web site

Available Board List


  • Suppport 3.3V / 5V
  • High Speed Ethernet controller W5500 chip
  • SPI interface
  • Internal 32Kbytes Tx/Rx buffer
  • 10/100 Ethernet PHY embedded
  • Support Auto Negotiation (Full / Half duplex, 10 / 100-based)
  • Hardwired TCP/IP Protocols : TCP, UDP, ICMP, IPv4, ARP, IGMP, PPPoE
  • User Selectable GPIO pin
  • Support SD-card slot for storage
  • Support I2C, UART interface

Hardware Configuration

  • RJ-45 with Transformer : Ethernet Port
  • W5500 : a hardwired TCP/IP Ethernet Controller
  • RESET : Reset Ethernet shield and Arduino when pressed
  • SD-Slot : support Micro SD card in FAT16 or FAT32 ; (Please Read the Caution)
  • I2C : I2C interface
  • UART : UART interface

Pins usage on Arduino & ARM mbed


W5500 Ethernet shield is User Selectable GPIO

  • The user is able to use different Modules by changing Chip Select
  • Stackable : Possible to stack different modules

Caution) When the user uses 5V Platform, we cannot confirm a stable operation of SD-CARD. Therefore, though 5V Platform is safe to use after going through enough tests, it is highly recommended to mount buffer & 100nF Capacitor for a secure operation.

SPI Operation & Timing Diagram

SPI Operation

There is a W5500 inside W5500 Ethernet shield. Therefore SPI operation & Timing Diagram of Ethernet shield follows one of W5500. For more information about W5500 chip please also refer to the chip's datasheet:

Technical Reference

Block Diagram

  • Not buffer http://wizwiki.net/wiki/lib/exe/fetch.php?media=osh:w5500_ethernet_shield:w5500-ethernet-shield_blockdiagram.gif
  • Using buffer http://wizwiki.net/wiki/lib/exe/fetch.php?media=osh:w5500_ethernet_shield:w5500-ethernet-shield_blockdiagram_buffer.jpg


Part list


  • W5500 Ethernet shield Rev1.0 Dimension


See Also

WizWiki Forum : WIZnet Forum for Technical support and Project shared

http://wizwiki.net/wiki/doku.php?id=osh:ioshield-a:start : WIZnet WIZ550io Technical support