The WIZnet W55MH32 is a high-performance Internet MCU that uniquely integrates WIZnet’s proven hardwired TCP/IP technology, delivering a stable and dependable networking experience essential for today’s connected applications. Unlike software-based stacks that consume host CPU resources, the W55MH32 features a TCP/IP offload engine (TOE) implemented directly in hardware, which handles networking protocols autonomously. This hardware-based design not only improves communication reliability but also frees up valuable MCU processing power, allowing developers to optimize application logic with fewer complications.
This chip is powered by a high-speed ARM Cortex-M3 core (up to 216 MHz), along with 1 MB Flash and 96 KB SRAM, the W55MH32 provides strong computing capabilities for edge-level applications. Its extensive peripheral options—including USB, CAN, SDIO, ADC/DAC, and multiple UART/SPI/I2C interfaces—offer versatile integration for embedded designs.
With support for up to 8 simultaneous hardware socket connections, the W55MH32 efficiently manages multiple communication streams in real time. It also includes 32 KB of dedicated Ethernet buffer memory and a built-in 10/100 Mbps MAC+PHY, enabling high-speed and consistent data transmission across a wide range of applications, from smart energy systems to industrial automation and security terminals.
Security is a foundational element. The W55MH32 is equipped with a true random number generator and a comprehensive hardware algorithm suite, supporting standards like DES, AES, SHA, and China’s SM1–SM7. These features enable secure and tamper-resistant communication, protecting both transmitted data and the device itself from external threats. By handling cryptography in hardware, the device significantly reduces attack surfaces compared to software-based solutions.The built-in Memory Protection Unit (MPU) prevents third parties from accessing or tampering with source code, further enhancing system security.
In summary, the W55MH32 combines hardware-accelerated networking, embedded encryption, and true random number generation to provide a highly reliable, secure, and efficient platform for next-generation connected systems.
