W55RP20

W55RP20

The W55RP20 chip is a System-in-Package (SiP) solution that integrates WIZnet's W5500 Ethernet controller with the RP2040 microcontroller from Raspberry Pi, providing networking and processing capabilities for IoT devices and smart applications. The W5500 supports a hardware TCP/IP stack, simplifying network connectivity and communication management, and offers an efficient solution without the need for external memory. The RP2040 features a dual-core ARM Cortex-M0+ processor, enabling fast data processing and multitasking capabilities to handle multiple tasks simultaneously. This chip is designed to be compatible with various programming environments, supporting languages such as Python and C/C++, making it easier for developers to implement applications. Additionally, it supports various external interfaces and GPIO, ADC, UART, SPI, and I2C, facilitating connections with sensors, actuators, and other peripheral devices.

Block Diagram

Pin Map

Features

• Dual ARM Cortex-M0+ @ 133MHz
• Hardwired TCP/IP stack
• 2MByte Flash memory on-chip
• 264kB on-chip SRAM in six independent banks
• DMA controller
• Fully-connected AHB crossbar
• Interpolator and integer divider peripherals
• On-chip programmable LDO to generate core voltage
• 2 on-chip PLLs to generate USB and core clocks
• 23 GPIO pins, 4 of which can be used as analogue inputs
• Peripherals
  • 2 UARTs
  • 2 SPI controllers
  • 2 I2C controllers
  • 16 PWM channels
  • USB 1.1 controller and PHY, with host and device support
  • 8 PIO state machines
• Supported Network Protocols
  • TCP
  • UDP
  • IPv4
  • ICMP
  • ARP
  • IGMP
  • PPPoE

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Documentation

Technical Documents

Title	Description	Notes
W55RP20 Datasheet (EN)	Technical specifications and features of the W55RP20 chip	-
W5500 Datasheet (EN)	Technical specifications and features of the W5500 chip	-
RP2040 Datasheet (EN)	Technical specifications and features of the W5500 chip	-

Software Resources

Driver

Resource	Description
W55RP20 C/C++ Examples	The Official Project(C/C++) for W55RP20 and other chips
ioLibrary_Driver	Official WIZnet driver library for W55RP20 and other chips

Supported Protocols

Name	Description	Notes
DHCP	Dynamic Host Configuration Protocol - Automatically obtains IP address from network
DNS	Domain Name System - Resolves domain names to IP addresses
MQTT	Message Queuing Telemetry Transport - Lightweight publish/subscribe messaging protocol
SNTP	Simple Network Time Protocol - Synchronizes system time with network time servers
TFTP	Trivial File Transfer Protocol - Simple file transfer over UDP
httpServer	HTTP Server - Web server implementation for hosting web pages and APIs

info

The ioLibrary_Driver is a host MCU-independent library that provides complete control functions for the W55RP20 chip. It is compatible with all WIZnet chips and includes implementations of various network protocols. This library serves as the foundation for developing TCP/IP-based applications with minimal host MCU dependencies.

Example

Example Name	Environment	Description
Ethernet Examples	C/C++	Basic TCP/UDP sockets, DHCP, DNS examples
Ethernet Examples	MicroPython	Socket, HTTP, MQTT basics in MicroPython
AWS Examples	C/C++	AWS IoT Core connect + MQTT/TLS publish & subscribe
Azure Examples	C/C++	Azure IoT Hub connect + MQTT/TLS device messaging
LwIP Examples	C/C++	LwIP port, TCP/UDP/raw feature & performance tests
FreeRTOS Examples	C/C++	FreeRTOS task-based TCP/UDP/MQTT integration
CircuitPython Examples	CircuitPython	High-level HTTP/MQTT for quick prototyping
Arduino Examples	Arduino	EthernetClient/Server, HTTP sketches

Hardware Resources

Technical Resources

Resource	Description	Notes
W55RP20-EVB-PICO SCH & PCB Library	Schematic & Part list & Gerber File	-

Test & Certification

Resource	Description	Notes
CE DoC	EU conformity declaration for W55RP20-EVB-PICO	-
CE Test report	CE testing results for EMC and performance	-
FCC DoC	US conformity declaration for FCC compliance	-
FCC Test report	FCC test results for emissions and durability	-

Evaluation Boards & Related modules

W55RP20-EVB-Pico

W55RP20-EVB-Pico is a microcontroller evaluation board based on the W55RP20 (RP2040 + W5500) System-in-Package, offering both processing and Ethernet connectivity in a single chip solution.