W55RP20 : Serial to Ethernet Design
W55RP20: How to Use for Serial to Ethernet Conversion
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Project description
Intro The W55RP20 is a chip specialized for Serial to Ethernet operation. This is because it combines the W5500, which enables Ethernet functionality even with low-spec MCUs, and the powerful RP2040 MCU from Raspberry Pi. Firmware for UART TTL, RS-232, RS-422, and RS-485 is already available for the W55RP20. This article covers PCB circuit design suitable for the firmware, usage of the tools, and instructions for firmware upload. Pinout Design The RST pin is for MCU reset and operates as Active Low. The BOOT Mode pin is designed to control boot within the Serial to Ethernet internal…
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