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W55MH32

The W55MH32 is a high-performance 32-bit microcontroller that combines Cortex-M3 processing power with Hardwired TCP/IP for efficient and secure IoT solutions. It operates at up to 216MHz, featuring 1024KB Flash and 96KB SRAM for fast data handling. This dedicated hardware networking stack ensures low latency and reduced CPU overhead, making it ideal for real-time applications. Security is a core focus, with AES, DES, and SHA hardware encryption, a True Random Number Generator (TRNG), and SRAM scrambling to protect sensitive data through network communication.

Block Diagram

Block diagram

Pin Map
W55MH32_Pin_Map

Features

  • Core: 32-bit Arm® Cortex®-M3 Core − Up to 216MHz operation
  • Hardwired TCP/IP stack
  • 1024K bytes of Flash memory
  • 96K bytes of SRAM
  • 12-channel DMA controller
  • Hardware encryption algorithm unit
  • Generate sequence of true random numbers
  • 66 (W55MH32L) / 36 (W55MH32Q) GPIO pins
  • Up to 12 different Peripherals
    • 5 (W55MH32L) / 3 (W55MH32Q) USARTs
    • 2 SPI controllers
    • 1 multiplexed I2S controllers
    • 2 I2C controllers
    • CAN interface
    • USB 2.0 full-speed controller
    • SDIO interface (only W55MH32L)
  • Supported Network Protocols
    • TCP
    • UDP
    • IPv4
    • ICMP
    • ARP
    • IGMP
    • PPPoE

Documentation

Datasheet

TitleDescriptionNotes
📄 W55MH32 Datasheet[EN]Technical specifications and features of the W55MH32 chip-
📄 W55MH32 Datasheet[CN]Technical specifications and features of the W55MH32 chip-

Technical Documents

TitleDescriptionNotes
📄 W55MH32 User Manal[EN]Technical specifications and features of the W55MH32 chip-
📄 W55MH32 User Manal[CN]Technical specifications and features of the W55MH32 chip-

Software Resources

Reference Code

The following are the reference codes for W55MH32:

ResourceDescription
🔗 W55MH32Lib (EN)Official WIZnet W55MH32 reference code in Github
🔗 W55MH32Lib (CN)Official WIZnet W55MH32 reference code in Gitee (CN)
🔗 W55MH32 Package and Flash AlgorithmW55MH32 Package and Flash Algorithm

Hardware Resources

Technical Resources

ResourceDescriptionNotes
🔗 Reference SchematicTypical application schematicIncludes recommended circuit design

Test & Certification

ResourceDescriptionNotes
[🔗 Ethernet Compliance Test]Results and documentation of Ethernet standard compliance testsCovers IEEE 802.3 physical and protocol layer verification
[🔗 Distance Test]Cable length performance test resultsVerified up to 100m Ethernet cable
[🔗 EMC Test]Electromagnetic compatibility test reportsCovers conducted and radiated emissions
[🔗 Reliability Test]Reliability and endurance test reportsIncludes thermal cycling and aging analysis
[🔗 Certificate]Official certification documentsCE, FCC, and RoHS certificates available