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WIZnet Ethernet Microcontroller (MCU) Selection Guide

WIZnet's 5 Ethernet MCUs: From Cortex-M3 with hardware TCP/IP/crypto to compact dual-core options for industrial, secure POS, and IoT applications.

ronpang

Published January 23, 2026

WIZnet Ethernet Microcontroller (MCU) Selection Guide

Project description

Preface This article focuses on WIZnet's 5 core Ethernet microcontrollers (W55MH32, W55MH32-L, W55MH32-Q, W55RP20, W7500P). Each model has distinct emphases on computing power, package size, interface expansion, and security features, covering a full spectrum of needs including industrial multi-device control, compact handheld terminals, high-security encrypted communication, and lightweight networking nodes. They precisely match diverse hardware design requirements, from simple peripheral connectivity to high-load multitasking, helping you quickly identify suitable solutions and reduce…

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