---
title: "WIZnet W55RP20"
url: "https://maker.wiznet.io/products/w55rp20/"
markdown_url: "https://maker.wiznet.io/products/w55rp20/md"
type: "WIZnet product hub"
product_page: "https://wiznet.io/products/ionic-chips/w55rp20"
projects: 38
language: "en"
source: "WIZnet Makers (https://maker.wiznet.io/)"
---

# WIZnet W55RP20

> Chip that combines the Raspberry Pi RP2040 microcontroller and the W5500 hardwired TCP/IP Ethernet controller in one package.

## Documents

- [Product page](https://wiznet.io/products/ionic-chips/w55rp20)

## Projects and products using W55RP20

- [Which PLATYPUS W55RP20 Module Converts 3.3 V UART to Ethernet Without Custom Firmware?](https://maker.wiznet.io/Benjamin/resellers/which-platypus-w55rp20-module-converts-3-3-v-uart-to-ethernet-without-custom-firmware/) (VAR, 2026-08-27): PP-Ethernet-UART-HAT is a 45 x 30 mm PLATYPUS module that converts 3.3 V UART to Ethernet on a WIZnet W55RP20 and ships with W55RP20-S2E firmware preloaded.
- [Soldered NULA Ethernet W55RP20](https://maker.wiznet.io/viktor/resellers/soldered-nula-ethernet-w55rp20/) (VAR, 2026-08-04): Soldered NULA Ethernet W55RP20
- [Modular UDP-based Controller - PLC runtime for embedded MCUs](https://maker.wiznet.io/viktor/projects/modular-udp-based-controller-plc-runtime-for-embedded-mcus/) (UCC, 2026-07-23): muc-plc is an experimental PLC runtime that moves industrial control execution onto embedded microcontrollers
- [Can LoRaWAN Downlink Commands Control an Ethernet LED Display with W55RP20?](https://maker.wiznet.io/sophia/projects/can-lorawan-downlink-commands-control-an-ethernet-led-display-with-w55rp20/) (UCC, 2026-07-16): LoRaWAN으로 받은 명령을 W55RP20이 이더넷 TCP로 네트워크 LED 디스플레이에 전달하는, ESP32-S3(LoRa) + W55RP20(이더넷) 2단 브릿지 구조의 시스템
- [How Does W55RP20 Ethernet Control Ocupoint RF Frontends?](https://maker.wiznet.io/Benjamin/projects/how-does-w55rp20-ethernet-control-ocupoint-rf-frontends/) (UCC, 2026-07-09): Ocupoint rf-control uses W55RP20 Ethernet and Go protobuf tools to configure Black Canyon, STRAPS, and Whalepod RF frontends.
- [How to Network RS-232 Devices over Ethernet with the PLATYPUS PP-Ethernet-RS232 (WIZnet W55RP20)](https://maker.wiznet.io/Benjamin/resellers/how-to-network-rs-232-devices-over-ethernet-with-the-platypus-pp-ethernet-rs232-wiznet-w55rp20/) (VAR, 2026-06-17): PLATYPUS PP-Ethernet-RS232 is a compact WIZnet W55RP20 converter that bridges RS-232 serial devices to Ethernet with Modbus and MQTT, from about JPY 3,190.
- [W55RP20 Smart Doorbell demo](https://maker.wiznet.io/sophia/projects/w55rp20-smart-doorbell-demo/) (UCC, 2026-05-08): W55RP20 + Grove AI Vision 기반 스마트 도어벨
- [Ethernet-Based Smart Parking Assistance System](https://maker.wiznet.io/amalmathewtech/contest/ethernet-based-smart-parking-assistance-system/) (Contest, 2026-05-01): Camera-based parking system using SBC + Ethernet to detect occupancy and display real-time slot availability via red/green LED indicators.
- [Bridging Pixhawk to LTE and Starlink: WIZ-IP20 in a Drone Multi-link Concept](https://maker.wiznet.io/Benjamin/projects/bridging-pixhawk-to-lte-and-starlink-wiz-ip20-in-a-drone-multi-link-concept/) (UCC, 2026-04-28): A Japanese engineer's research diary evaluating WIZ-IP20 as a UART-to-Ethernet bridge for routing Pixhawk MAVLink telemetry over LTE, 5G, and Starlink in BVLOS
- [W55RP20 smart doorbell](https://maker.wiznet.io/teamprof/contest/w55rp20-smart-doorbell/) (Contest, 2026-04-25): A smart camera doorbell where W55RP20 controls a vision NPU. It texts user when a stranger is detected.
- [W55RP20-S2E MQTTS(AWS) client Example (MicroPython)](https://maker.wiznet.io/Grace_Koo/projects/w55rp20-s2e-mqtts-aws-client-example-micropython/) (WCC, 2026-02-25): This example demonstrates MQTTS(AWS) client on W55RP20 S2E via UART/SPI using MicroPython on a Raspberry Pi Pico (Master)
- [W55RP20-S2E MQTT client Example (MicroPython)](https://maker.wiznet.io/Grace_Koo/projects/w55rp20-s2e-mqtt-client-example-micropython/) (WCC, 2026-02-25): This example demonstrates MQTT client on W55RP20 S2E via UART/SPI using MicroPython on a Raspberry Pi Pico (Master)
- [W55RP20-S2E SSL client Example (MicroPython)](https://maker.wiznet.io/Grace_Koo/projects/w55rp20-s2e-ssl-client-example-micropython/) (WCC, 2026-02-11): This example demonstrates SSL client on W55RP20 S2E via UART/SPI using MicroPython on a Raspberry Pi Pico (Master)
- [Tipo Bandera (SID13)](https://maker.wiznet.io/Alan/resellers/tipo-bandera-sid13/) (VAR, 2026-02-09): Tipo Bandera (SID13)
- [W55RP20-S2E HTTP Client Example (MicroPython)](https://maker.wiznet.io/Grace_Koo/projects/w55rp20-s2e-http-client-example-micropython/) (WCC, 2026-02-06): This example demonstrates HTTP client on W55RP20 S2E via UART/SPI using MicroPython on a Raspberry Pi Pico (Master)
- [W55RP20 + Rust(embassy) TCP Server 예제: PIO SPI로 W5500 제어하기](https://maker.wiznet.io/sophia/projects/w55rp20-rust-embassy-tcp-server--pio-spi-w5500-/) (UCC, 2026-02-03): W55RP20에서 내장 W5500을 제어하기 위해 “SPI0 대신 PIO SPI”를 구성하고, embassy 기반의 TCP echo 서버를 동작시키는 Rust 예제 프로젝트입니다.
- [w55rp20](https://maker.wiznet.io/mason/projects/w55rp20-1/) (UCC, 2026-02-02): w55rp20
- [W55RP20-S2E AT command example (Micropython)](https://maker.wiznet.io/Grace_Koo/projects/w55rp20-s2e-at-command-example-micropython/) (WCC, 2026-01-30): This program is an example that sends AT commands to the W55RP20 S2E board via UART or SPI interface using MicroPython on a Raspberry Pi Pico (Master).
- [Alan's Tiny WIZnet W55RP20 Board Hides a Secret Ethernet Connection in Its USB Type-C Connector](https://maker.wiznet.io/scott/projects/alans-tiny-wiznet-w55rp20-board-hides-a-secret-ethernet-connection-in-its-usb-type-c-connector/) (UCC, 2025-09-24): Alan’s tiny W55RP20 board cleverly routes Ethernet through USB-C, compact but non-standard and experimental.
- [W55RP20-Based WS2811 Addressable RGB LED Controller – SCAN & Artnet Powered](https://maker.wiznet.io/sophia/projects/w55rp20-based-ws2811-addressable-rgb-led-controller--scan-artnet-powered/) (UCC, 2025-08-22): W55RP20 drives WS2811 RGB LEDs with SCAN & Artnet, creating dazzling pixel light shows for art, stage, and IoT. Maker: Darren Hedlund.
- [UARDECS W55RP20 envsensor](https://maker.wiznet.io/Aimee0/projects/uardecs-w55rp20-envsensor/) (UCC, 2025-07-21): An environmental sensor device implementing the UECS (formerly UARDECS) protocol on the W55RP20-EVB-PICO board
- [Exploring the W55RP20 SiP: A Powerful RP2040 + W5500 Integration for Embedded Ethernet](https://maker.wiznet.io/sophia/projects/exploring-the-w55rp20-sip-a-powerful-rp2040-w5500-integration-for-embedded-ethernet/) (UCC, 2025-06-27): An independent maker reviews the W55RP20 SiP, combining RP2040 and W5500 in one package for compact, reliable Ethernet-connected embedded development.
- [W55RP20 Ethernet Performance Measurements](https://maker.wiznet.io/louis_m/projects/w55rp20-ethernet-performance-measurements/) (WCC, 2025-05-12): Utilizes the W55RP20 microcontroller Ethernet chip to test high-speed Ethernet communication performance.
- [W55RP20 Coremark Test](https://maker.wiznet.io/louis_m/projects/w55rp20-coremark-test/) (WCC, 2025-03-05): W55RP20-EVB-Pico Network Coremark Test
- [WIZnet Success Stories : Daeyeon C&I Solar Power Monitoring System](https://maker.wiznet.io/Alan/resellers/wiznet-success-stories--daeyeon-c-i-solar-power-monitoring-system/) (VAR, 2025-02-05): The Solar Power Monitoring Device using W55RP20 transmits the solar charging status of each cell to the cloud.
- [WIZnet Success Stories : Nicomtek HeatSense LED](https://maker.wiznet.io/Alan/resellers/wiznet-success-stories--nicomtek-heatsense-led/) (VAR, 2025-02-04): HeatSense LED serves as a pedestrian guidance light while detecting road freezing conditions and transmitting all data to the cloud.
- [WIZnet Success Stories : Platypus RS485 to Ethernet Module](https://maker.wiznet.io/Alan/resellers/wiznet-success-stories--platypus-rs485-to-ethernet-module/) (VAR, 2025-02-04): The RS485 to Ethernet module from Platypus is a powerful Serial to Ethernet converter using WIZnet's new chip, W55RP20.
- [Connecting the W55RP20 Using SEGGER \[J-Link\]](https://maker.wiznet.io/louis_m/projects/connecting-the-w55rp20-using-segger-j-link/) (WCC, 2024-12-06): SEGGER [J-Link] supports the W55RP20.
- [The smallest Ethernet module in the world. C-Type Ethernet.](https://maker.wiznet.io/Alan/projects/the-smallest-ethernet-module-in-the-world-c-type-ethernet/) (WCC, 2024-11-18): With USB-C Type, not only USB communication but also Ethernet!
- [\[W55RP20 Project #1\] Purpose and Selection Process](https://maker.wiznet.io/bruno/projects/w55rp20-project-1-purpose-and-selection-process/) (WCC, 2024-10-30): Developing a camera solution by combining the efficient W55RP20 and powerful Raspberry Pi Zero 2 for high-quality streaming and optimal performance.
- [W55RP20 Sleep WakeUp example](https://maker.wiznet.io/Aimee0/projects/w55rp20-sleep-wakeup-example/) (WCC, 2024-10-29): This is an example of entering sleep mode and being woken up by WOL magic packet.
- [W55RP20 HTTP client example](https://maker.wiznet.io/Aimee0/projects/w55rp20-http-client-example/) (WCC, 2024-10-29): This is an example of acting as an HTTP client using W55RP20-EVB-Pico.
- [W55RP20 COAP Client example](https://maker.wiznet.io/Aimee0/projects/w55rp20-coap-client-example/) (WCC, 2024-10-29): This is an example of acting as an COAP client using W55RP20-EVB-Pico.
- [W55RP20 COAP Server example](https://maker.wiznet.io/Aimee0/projects/w55rp20-coap-server-example/) (WCC, 2024-10-29): This is an example of acting as an COAP server using W55RP20-EVB-Pico.
- [Ultra-low-cost, network-based HDMI output module](https://maker.wiznet.io/nexp/contest/ultra-low-cost-network-based-hdmi-output-module/) (Contest, 2024-10-19): This project captures any image or screen in real-time, sends it over Ethernet, and outputs it to HDMI.
- [Voltage Fluctuation Test Results for 100 Units of W55RP20](https://maker.wiznet.io/bruno/projects/voltage-fluctuation-test-results-for-100-units-of-w55rp20/) (WCC, 2024-10-18): tested 100 units of the W55RP20, a newly released integrated product combining the RP2040 and the W5500
- [Modular HMI](https://maker.wiznet.io/zst123/contest/modular-hmi/) (Contest, 2024-10-12): Low-cost HMI for industrial systems. Interface with ModbusTCP. Uses MicroPython for easy on-site modifications with heads-up LCD.
- [Test of reference voltage change of RP2040 internal temperature sensor of SIP chip W55RP20](https://maker.wiznet.io/bruno/projects/test-of-reference-voltage-change-of-rp2040-internal-temperature-sensor-of-sip-chip-w55rp20/) (WCC, 2024-09-26): Test of reference voltage change of RP2040 internal temperature sensor of SIP chip W55RP20

## Related forum questions

- [W55RP20-EVB-Pico Ethernet - GPIO 관련 질문.](https://maker.wiznet.io/forum/16130) (2026-08-05, 1 replies)
- [W55RP20 SPI INT NOT GETTING TRIGGERED IN S2E](https://maker.wiznet.io/forum/16126) (2026-07-25, 1 replies)
- [I2C0 halts during Ethernet operation?](https://maker.wiznet.io/forum/16055) (2026-04-22, 1 replies)
- [W55RP20 - What is RP2040 GPIO 17 internally tied to](https://maker.wiznet.io/forum/15999) (2026-03-05, 2 replies)
- [W55RP20-S2E Long connection to MQTT](https://maker.wiznet.io/forum/15941) (2025-11-18, 2 replies)
- [Ethernet based bootloader on w55rp20 using pico sdk](https://maker.wiznet.io/forum/15922) (2025-10-30, 2 replies)
- [W55RP20 EVB PICO](https://maker.wiznet.io/forum/15878) (2025-09-15, 2 replies)
- [W55RP20-EVB-PICO + WIZPoE-S1 = Magic Smoke](https://maker.wiznet.io/forum/15852) (2025-08-27, 8 replies)
- [Running W55RP20 on 200 MHz using Micropyton](https://maker.wiznet.io/forum/15829) (2025-08-07, 3 replies)
- [WIZnet-PICO-C build webpage using http server example](https://maker.wiznet.io/forum/15796) (2025-07-10, 2 replies)

---

Source: https://maker.wiznet.io/products/w55rp20/