WIZnet W5500-EVB-Pico-POE

The WIZnet W5500-EVB-Pico-POE is a microcontroller evaluation board based on the Raspberry Pi RP2040 and fully hardwired TCP/IP controller W5500.

It essentially works the same as Raspberry Pi Pico but with additional Ethernet via W5500 and supports PoE through an optional plug-in module (PoE module not included but is available here). It also has a USB-C connection!

W5500-EVB-Pico-PoE pinout is directly connected to the GPIO of RP2040 as shown in the pinout image. It has the same pinout as the Raspberry Pi Pico board, however GPIO16, GPIO17, GPIO18, GPIO19, GPIO20, GPIO21 are connected to W5500 inside the board. These pins enable SPI communication with W5500 to use Ethernet function. If you use the Ethernet function, these pins cannot be used for any other purpose.

The RP2040 GPIO used inside W5500-EVB-Pico-PoE is as follows.

I/O	Pin Name	Description
I	GPIO16	Connected to MISO on W5500
O	GPIO17	Connected to CSn on W5500
O	GPIO18	Connected to SCLK on W5500
O	GPIO19	Connected to MOSI on W5500
O	GPIO20	Connected to RSTn on W5500
I	GPIO21	Connected to INTn on W5500
I	GPIO24	VBUS sense – high if VBUS is present, else low
O	GPIO25	Connected to user LED
I	GPIO29	Used in ADC mode (ADC3) to measure VSYS/3

Apart from GPIO and ground pins, there are 7 other pins on the main 40-pin interface:

Pin No.	Pin Name	Description
PIN40	VBUS	USB-C input voltage, connected to USB-C port pin 1. Nominally 5V.
PIN39	VSYS	Main system input voltage, which can vary in the allowed range 4.3V to 5.5V, and is used by the on-board LDO to generate the 3.3V .
PIN37	3V3_EN	Connects to the on-board LDO enable pin. To disable the 3.3V (which also de-powers the RP2040 and W5500), short this pin low.
PIN36	3V3	Main 3.3V supply to RP2040 and W5500, generated by the on-board LDO.
PIN35	ADC_VREF	ADC power supply (and reference) voltage, and is generated on W5500-EVB-Pico-PoE by filtering the 3.3V supply.
PIN33	AGND	Ground reference for GPIO26-29.
PIN30	RUN	RP2040 enable pin, To reset RP2040, short this pin low.

We also stock the non-PoE version here (Micro-USB).

WIZnet Controller Comparison

You may be wondering what the difference is between the different models of WIZnet boards we offer. This mostly comes down to the TCP/IP controller chip used.

Take a look at WIZnet’s comparison table to identify the right board for your needs.

Features

• RP2040 microcontroller with 2MByte Flash
  • Dual-core cortex M0+ at up to 133MHz
  • 264kByte multi-bank high-performance SRAM
  • External Quad-SPI Flash with eXecute In Place (XIP)
  • High-performance full-crossbar bus fabric
  • 30 multi-function General Purpose IO (4 can be used for ADC)
    • 1.8-3.3V I/O Voltage (note: Pico I/O voltage is fixed at 3.3V)
  • 12-bit 500ksps Analogue to Digital Converter (ADC)
  • Various digital peripherals:
    • 2x UART, 2x I2C, 2x SPI, 16x PWM channels, 1x Timer with 4 alarms, 1x Real Time Counter
    • 2x Programmable I/O (PIO) blocks, 8x state machines total
  • Flexible, user-programmable high-speed IO
  • Can emulate interfaces such as SD Card and VGA
• Includes W5500
  • Supports Hardwired Internet Protocols: TCP, UDP, ICMP, IPv4, ARP, IGMP, PPPoE
  • Supports 8 Independent Hardware SOCKETs simultaneously
  • Internal 32 Kbytes Memory for TX/ RX Buffers
  • Supports High-Speed Serial Peripheral Interface (SPI MODE 0, 3)
• USB-C port for power and data (and for reprogramming the Flash)
• 40 pin 21×51 ‘DIP’ style 1mm thick PCB with 0.1′ through-hole pins also with edge castellations
• 3-pin ARM Serial Wire Debug (SWD) port
• 10 / 100 Ethernet PHY embedded
• Supports Auto-Negotiation
  • Full / Half Duplex
  • 10 / 100 Based
• Built-in RJ45 with PoE support (separate optional module required, not included)
• Built-in LDO

Resources

• Product Documentation
• Firmware Examples (C/C++)
  • Ethernet Examples
  • AWS Examples
  • Azure Examples
  • LwIP Examples
  • FreeRTOS Examples
  • CircuitPython Examples
  • MicroPython Examples
• RP2040 Datasheet
• W5500 overview
• Schematic
• Part list & Gerber File

Pinout

Operating Conditions

• Operation Temperature MAX: 85C (including self-heating)
• Operation Temperature MIN: -20C
• VBUS: DC 5V (+/- 10%)
• VSYS Min: DC 4.3V
• VSYS Max: DC 5.5V

Package Contents

• 1x W5500-EVB-Pico-PoE board

PoE module is optional and not included