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WIZ550S2E

WIZ550S2E is a gateway module that converts serial protocol (3.3V TTL UART) into TCP/IP protocol. It enables remote gauging and remote management of devices over Ethernet by connecting to existing equipment with a serial interface. In other words, WIZ550S2E is a protocol converter that transmits data from serial equipment as TCP/IP data, or vice versa. The base WIZ550S2E (TTL) module is currently available. The RS-232 and RS-422/485 interface board versions (WIZ550S2E-232, WIZ550S2E-485/422) have been discontinued.

Serial to Ethernet

TTL UART (3.3V) x1 with CTS/RTS flow control

10/100Mbps Ethernet

W5500 hardwired TCP/IP controller, integrated RJ45 with transformer

3.3V, -40℃ to 85℃

DC 3.3V operation, typical current 140mA

LPC11E36 MCU

Cortex-M0 MCU paired with W5500

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Key Features

Various Network Modes

Supports TCP server, TCP client, TCP mixed mode, and UDP

AT Command & Configuration Tool

Configured via AT commands or the WIZnet Configuration Tool

Easy Integration

2.54mm pin headers and LED status indicators for power and network

Product Status

WIZ550S2E (TTL) active. RS-232 and RS-422/485 interface boards discontinued

Features

  • Serial to Ethernet gateway module based on LPC11E36 MCU and W5500 TCP/IP controller
  • Serial interface: 3.3V TTL UART x1 with CTS/RTS flow control
  • 10/100Mbps Ethernet with integrated RJ45 connector (transformer built in)
  • Supports TCP server, TCP client, TCP mixed mode and UDP mode
  • Configuration is possible via serial AT commands or via Configuration Tool
  • 2.54mm pitch pin-header mounted module (2 rows)
  • DC 3.3V power supply, typical current consumption 140mA
  • Operating temperature -40℃ to 85℃
  • LED indicators for operation status
  • Product status
    • WIZ550S2E (TTL): active, available for purchase
    • WIZ550S2E-232 / WIZ550S2E-485/422 interface boards: discontinued

Documentation

This section provides key documentation, including the datasheet and hardware information, to help you understand product features, specifications, and usage.

Name Description Notes
Datasheet Technical specifications and hardware information - EN link 한국어 link 中文 link
Future Plan Product roadmap document - EN link 한국어 link
WIZ550S2E-232/485 (Discontinued) RS-232 and RS-422/485 interface board versions. Hardware information is kept for reference - EN link

Setup & Configuration

This section covers the AT command set and the configuration tool for setting up and controlling the module.

Name Description Notes
Programmer's Guide Overview of commands and configuration - EN link 한국어 link 中文 link
AT Command AT command reference - EN link 한국어 link 中文 link
Configuration Tool How to use the configuration tool - EN link 한국어 link 中文 link

User Guide

This section provides tutorials to help you get started with the module.

Name Description Notes
Tutorial Getting started with WIZ550S2E - EN link 한국어 link

Software Resourcesopen in new tab

This section provides firmware, configuration tool and related downloads for the module.

Evaluation Boards & Related modules

Complementary WIZnet solutions with diverse interfaces and performance levels

Evaluation Boards

W5500link

The W5500 chip is a Hardwired Internet controller with an integrated full TCP/IP stack, enabling Internet connectivity via SPI with up to 80MHz speed. It combines 10/100 Ethernet MAC and PHY for stable connectivity and supports protocols like TCP, UDP, IPv4, among others. With 8 sockets and 32KB internal memory, it simplifies Ethernet application development and includes features like WOL and Power Down Mode for energy efficiency.

WIZ550S2E

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