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WIZ100SR is not discontinued, but we do not recommend it for new designs.

Technical support for this product has officially ended.

Please check WIZ750SR-100 instead.


WIZ100SR-EVB is a evaluation board for WIZ100SR.

WIZ100SR is the serial to Ethernet module using W5100 & 8051 MCU. WIZ100SR is the protocol converter that transmits the data sent by a serial equipment as TCP/IP data type, and converts back the TCP/IP data received through the network into serial data to transmit back to a serial equipment.


  • Serial to Ethernet Module based on W5100 & 8051
  • Pin-header type module
  • Serial signals : TXD, RXD, RTS, CTS, GND
  • Support the configuration method of AT command & Configuration tool program
  • 10/100Mbps Ethernet & Max.230kbps serial speed
  • Support WIZ VSP (Virtual Serial Port) program

Hardware Specification

WIZ100SR Module

  • TCP/IP : W5100
  • PHY : Embedded in W5100
  • MCU : 8051 (GC89L591A0-MQ44I) : SRAM : 16K Byte, EEPROM : 2K Byte
  • Serial : 3.3V LVTTL

Base Board

  • RJ-45 : RB1-125BAG1A (Transformer Integrated)
  • Serial Connector : D-SUB, 9PIN, Right Angle, Male
  • RS-232 Transceiver : MAX3232CSE
  • Power : DC Jack mounted (External : 4.5Ø, Internal :1.3Ø)


  • Power Adaptor (5V, 2A), UTP LAN Cable (2M), Serial Cable


  • Configuration Tool for Windows
  • WizVSP: Virtual Serial Port (COM port) for User’s Programs

Evaluation Board Interface