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WIZ750SR is a compact sized serial to Ethernet module using the W7500P Ethernet MCU (SoC based on ARM Cortex-M0 architecture). WIZ750SR is a protocol converter that transmits data sent by serial equipment as TCP/IP data and converts the TCP/IP data received through the network back into serial data to the serial equipment. It complies with Commercial temperature standard range(0°C ~ 70°C) and supports all relevant serial interface systems (TTL / RS-232 / RS-422/485).

Figure: WIZ750SR Product Overview

WIZ750SR is compatible[1] with the WIZnet WIZ107/108SR S2E module. In addition, WIZ750SR contains an 4-pin GPIO expansion port that can be controlled freely by the user. (analog input or digital in/out)

WIZ750SR is the best fit solution to control user's serial device via Ethernet network.


  • Serial to Ethernet Module based on W7500P MCU
  • Software and Hardware compatible with WIZ107/108SR S2E Module
  • The modules is available in three versions:
    • WIZ750SR-TTL: TTL Version
    • WIZ750SR-RS232: RS-232 Version
    • WIZ750SR-RS485: RS-485/422 Version
  • 10/100Mbps Ethernet & Up to 230kbps serial speed
  • Pin-header(2x6) type & RJ-45 connector mounted module
  • 4-Pins Configurable User's I/O
  • Status pins: PHY link status / TCP connection status
  • Serial signals(RS-232 or RS-422/485 transceiver optionally built-in)
    • RS-232/TTL version: TXD, RXD, RTS, CTS
    • RS-422/485 version: 485+/RXD+, TXD+, 485-/RXD-, TXD-, 485_SEL
    • Optional DTR/DSR signals supported (Status pins or DTR/DSR pins selectable)
  • Separate Data UART and Debug UART port
  • Supports a search password
  • Configuration is possible via serial AT commands or via Configuration tool
  • Support WIZ VSP (Virtual Serial Port) program
  • Built in 10/100Mbps Ethernet ESD Protection IC
  • PCB Board design 45mm X 30mm (Length x Width)
  • Compact sized design 48mm X 30mm X 18mm (Length x Width x Height)

Product Contents

WIZ750SR-RS232-EVB Package

WIZ750SR-RS485-EVB Package

WIZ750SR Module

WIZ750SR evaluation board for RS-232/TTL module

WIZ750SR evaluation board for RS-485/422 module

Combining WIZ750SR module and EVB

WIZ750SR Module Series

Ordering InformationItemQ'tyRemarks
WIZ750SR-TTLWIZ750SR-TTL module1-
WIZ750SR-232WIZ750SR-RS232 module1-
WIZ750SR-485WIZ750SR-RS485 module1RS-422/485

WIZ750SR Evaluation Board Series

Ordering InformationCategoryItemQ'tyRemarks
WIZ750SR-TTL-EVBDeviceWIZ750SR-TTL module1-
::::::WIZ750SR-232/TTL-EVB board1-
:::CableD-SUB9-FEMALE serial cable1Data port
::::::USB 2.0 Micro B type cable 1M1Debug port
::::::24AWG CAT5e UTP cable1LAN cable
WIZ750SR-232-EVBDeviceWIZ750SR-232 module1-
::::::WIZ750SR-232/TTL-EVB board1-
:::CableD-SUB9-FEMALE serial cable1Data port
::::::USB 2.0 Micro B type cable 1M1Debug port
::::::24AWG CAT5e UTP cable1LAN cable
WIZ750SR-485-EVBDeviceWIZ750SR-485 module1-
::::::WIZ750SR-485-EVB board1-
:::CableUSB 2.0 Micro B type cable 1M1Debug port
::::::24AWG CAT5e UTP cable1LAN cable
  • It can be replaced with better components to improve the performance of the product.


WIZ750SR series Downloads