Serial to Ethernet Converter Module
Product Overview

Best fit solution to control your device via Ethernet Network

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.

WIZ750SR is compatible with the WIZnet WIZ107/108SR S2E module.

In addition, WIZ750SR containsan 4-pin GPIO expansion port that can be controlled freely by the user. (analog input or digital in/out) It complies with industrial temperature standard and supports all relevant serial interface systems (TTL / RS-232 / RS-422/485).

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

Use Cases


Technical Specifications


ARM® Cortex™-M0 core & Memories

  • Up to 48MHz maximum frequency
  • ARM Cortex-M0 Core
  • Up to 48MHz frequency
  • 128KB Flash
  • 48KB SRAM (include 32KB RAM for TCP/IP)
  • Hardwired TCP/IP Core
  • MII Interface
  • Embedded PHY IC+(IP101G)

Board Specifications

  • Built in 10/100Mbps Ethernet ESD Protection IC
  • RS-232 or RS-422/485 transceiver optionally built-in
  • Pin-header(2×6) type & RJ-45 connector mounted module
  • 4-Pins Configurable User’s I/O
  • State pins: PHY link state / TCP connection state
  • Separate Data UART and Debug UART port
  • RJ45(with transformer)


  • Dimension (mm) : 48(L) x 30 (W) x 18 (H)
  • Input Voltage: 3.3V
  • Max, Power Consumption: 110mA @ RS422 mode
  • Operation Temperature: 0 ~ 70 ℃
  • RoHS, SVHC Compliant
Comparison Table
iEthernet ChipN/AN/AW5500W5500W5100W5100N/A
MCUW7500PW7500ST Cortex-M3NXP Cortex-M080518051W7100A
LAN InterfaceRJ-45TransformerTransformerRJ-45TransformerRJ-45RJ-45
Pin Pitch (mm)2.54222.542N/A2.54
Operation Temp (℃) 0 ~ 70~40 ~ 85~40 ~ 85~40 ~ 850 ~ 800 ~ 80~40 ~ 85
Dimension (mm)48x30x1850x30x1222x24x1355x30x23.550x30x1275x50x1748x30x18

* More FAQs will be updated soon.