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  • WIZ550SR
  • WIZ550SR pin map
  • WIZ550SR pin map


Excl. Tax: €20.67 Incl. Tax: €23.98

Quick Overview

Serial to Ethernet module with W5500 and STM32F103RCT6 without transformer and RJ45.


2.00mm pin pitch Serial to Ethernet plugin module

Product Description

The WIZ550SR is a Serial to Ethernet module, It contains the TCP/IP chip W5500 from WIZnet and a Cortex-M3 STM32F103RCT6 from STmicro. WIZ550SR does not contain RJ45 because of the small PCB size but is equipped with 2mm pitch pin headers.

It is the protocol converter that transmits the data sent by serial equipment as TCP/IP data, and converts back the TCP/IP data received through the network into serial data. It complies with industrial temperature standard and supports the serial interfaces of UART.


  • Very small size Serial to Ethernet Module based on the W5500
  • microcontroller from STmicro, Cortex-M3 based STM32F103RCT6
  • Does not include a transformer or RJ45
  • 2.00mm Pin pitch header, 1x11 pins
  • MDI support (TXN, TXP, RXN, RXP)
  • UART interface (RXD, TXD, RTS, CTS, DSR and DTR)
  • separate Debug UART
  • configuration with AT command set or configuration program possible
  • 10/100Mbps Ethernet & up to 230kbps serial speed
  • Hardwired TCP/IP protocols: TCP, UDP, ICMP, IPv4, ARP, IGMP, PPPoE
  • 8 Independent hardware socket
  • Internal 32 KBytes memory for TCP/IP packet processing

Related Links

W5500 Data sheet

W5500 Application notes

WIZ550SR product page on

WIZ550SR data sheet on

More references for wiz550sr in the WIZnetMuseumLogo WIZnetMuseum

Additional Information

Dimension 22 x 24 x 13 mm
Ethernet I/F MDI
Operating Temperature -40° to +85° Celsius
Operating Voltage 3.3 V
Functions 3-in-1, TCP/IP+MAC+PHY
Auto Negotiation Yes
Package pin module
pin count 2 x 11
auto MDIX No
Wake on Lan Yes
Power Down Mode Yes
typ. Power Consumption N/A
MCU core STM32F103RCT6
PHY chip No
Related Chip/Module W5500
Connector Type header pins
Serial I/F TTL
serial connector count 2
Ethernet connector -
pin pitch 2.00 mm
voltage regulator (LDO) No
MAC address inside No
PoE possible No
Ethernet Speed 10/100
UART (max speed) 230k
Manufacturer No

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Excl. Tax: €37.00 Incl. Tax: €42.92

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