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WIZnet Pico PoE


It combines with the W5500, W5100S, and W6100 Io Module to provide Ethernet as well as a separate power supply. It can supply up to 6.6 W

  • Raspberry Pi Pico Mountable
  • Ethernet W5100S, W5500, W6100 IO Module Mountable
WIZnet Pico PoE


Raspberry Pi Pico
  • 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 IO Voltage (NOTE. Pico IO voltage is fixed at 3.3V)
    • 12-bit 500ksps Analogue to Digital Converter (ADC)
    • Various digital peripherals
      • 2 × UART, 2 × I2C, 2 × SPI, 16 × PWM channels
      • 1 × Timer with 4 alarms, 1 × Real Time Counter
    • 2 × Programmable IO (PIO) blocks, 8 state machines total
    • Flexible, user-programmable high-speed IO
    • Can emulate interfaces such as SD Card and VGA
Install and use one of W5100S-io, and W6100-io
Caution : Incompatible with W5500-io Module. Compatible with next revision
  • W5100S-IO
    • Supports Hardwired Internet Protocols: TCP, UDP, WOL over UDP, ICMP, IGMPv1/v2, IPv4, ARP, PPPoE
    • Supports 4 Independent Hardware SOCKETs simultaneously
    • Internal 16 Kbytes Memory for TX/ RX Buffers
    • SPI Interface
  • W5500-IO (Not currently available on the board)
    • 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)
  • W6100-IO
    • Supports Hardwired Internet Protocols: TCP, UDP, IPv6, IPv4, ICMPv6, ICMPv4, IGMP, MLDv1, ARP, PPPoE
    • Supports 8 independent SOCKETs simultaneously with 32KB memory
    • Internal 16 Kbytes Memory for TX/ RX Buffers
    • SPI Interface
Other Functions
  • 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(RJC-191R)
  • Built-in LDO (LM8805SF5-33V)

Hardware Specification

WIZnet Pico PoEMounting Raspberry Pi Pico, WIZnet Ethernet IO ModuleWIZnet Pico PoERemoved Raspberry Pi Pico, WIZnet Ethernet IO ModuleWIZnet Pico PoE Part

Raspberry Pi Pico

WIZnet IO Module pinout is directly connected to the GPIO of Pico Board as shown in the picture above. GPIO16, GPIO17, GPIO18, GPIO19, GPIO20, GPIO21 are connected to WIZnet IO Module. These pins enable SPI communication with WIZnet Chip to use Ethernet function. If you are using the Ethernet function, these pins cannot be used for any other purpose

Raspberry Pi Pico to WIZnet IO Module Connecttion Pin
I/OPin NameDescription
IGPIO16Connected to MISO on W5100S
OGPIO17Connected to CSn on W5100S
OGPIO18Connected to SCLK on W5100S
OGPIO19Connected to MOSI on W5100S
OGPIO20Connected to RSTn on W5100S
IGPIO21Connected to INTn on W5100S
IGPIO24VBUS sense - high if VBUS is present, else low
OGPIO25Connected to user LED
IGPIO29Used in ADC mode (ADC3) to measure VSYS/3
Power Pin of Raspberry Pi Pico
Pin No.Pin NameDescription
PIN40VBUSMicro-USB input voltage, connected to micro-USB port pin 1. Nominally 5V.
PIN39VSYSMain 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 .
PIN373V3_ENConnects to the on-board LDO enable pin. To disable the 3.3V (which also de-powers the RP2040 and W5100S), short this pin low.
PIN363V3Main 3.3V supply to RP2040 and W5100S, generated by the on-board LDO.
PIN35ADC_VREFADC power supply (and reference) voltage, and is generated on W5100S-EVB-Pico by filtering the 3.3V supply.
PIN33AGNDGround reference for GPIO26-29.
PIN30RUNRP2040 enable pin, To reset RP2040, short this pin low.

J1 Power Output Header

Pin No.Pin NameDescription
1+5VMain +5V power output pin. Up to 6.6W, 1.32A
2+3.3V+3.3V voltage dropped out of +5V to the internal LDO. It can output up to 1.98W.

J7 SWD Header

3-pin ARM Serial Wire Debug (SWD) port

Pin No.Pin Name

Operation Condition

Operation Temperature MAX85C (including self-heating)
Operation Temperature MIN-20C
+5VDC 5V (+/- 10%)
+3.3VDC 3.3V
Power Max6.6W
+3.3V Output Max (LDO Output)1.98W

Recommended maximum ambient temperature of operation is 70C.

Technical Reference

RP2040 Datasheet


Schematics-WIZnet-Pico-PoE- Schematics-WIZnet-Pico-PoE

PCB Data


Dimension (Unit : mm)