WIZnet W5100S-EVB-Pico2

The WIZnet W5100S-EVB-Pico2 is a microcontroller board based on the Raspberry Pi RP2350 and fully hardwired TCP/IP controller W5100S – it essentially works the same as Raspberry Pi Pico 2 but with additional Ethernet via W5100S and USB-C!

The board can also support PoE via the optional WIZPoE-P1 PoE add-on module.

The W5100S-EVB-Pico2 pinout is directly connected to the GPIO of RP2350 as shown in the pinout image. It has the same pinout as the Raspberry Pi Pico2 board. However, GPIO16, GPIO17, GPIO18, GPIO19, GPIO20, GPIO21 are connected to W5100S inside the board. These pins enable SPI communication with W5100S to use the Ethernet function. If you use the Ethernet function, these pins cannot be used for any other purpose.

The RP2350 GPIO used inside W5100S-EVB-Pico is as follows.

I/O	Pin Name	Description
I	GPIO16	Connected to MISO on W5100S
O	GPIO17	Connected to CSn on W5100S
O	GPIO18	Connected to SCLK on W5100S
O	GPIO19	Connected to MOSI on W5100S
O	GPIO20	Connected to RSTn on W5100S
I	GPIO21	Connected to INTn on W5100S
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 RP2350 and W5100S), short this pin low.
PIN36	3V3	Main 3.3V supply to RP2350 and W5100S, generated by the on-board LDO.
PIN35	ADC_VREF	ADC power supply (and reference) voltage, and is generated on W5100S-EVB-Pico by filtering the 3.3V supply.
PIN33	AGND	Ground reference for GPIO26-29.
PIN30	RUN	RP2350 enable pin, To reset RP2350, short this pin low.

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

• RP2350 Microcontroller with Integrated 16Mbit Flash
  • Symmetric dual Arm Cortex-M33 cores at up to 150MHz
  • 520kByte multi-bank high-performance SRAM
  • External Quad-SPI Flash with eXecute In Place (XIP) capabilities
  • Enhanced performance full-crossbar bus fabric
  • Up to 48 multi-function General Purpose IO (8 can be used for ADC on RP2350-B)
    • 1.8-5.0V IO Voltage
• Security Features
  • One-Time Programmable (OTP) Memory: Used for boot configuration and secure key storage.
  • Secure Boot: Ensures that only authenticated software can run on the device, utilizing OTP for key verification.
  • Arm TrustZone Technology: Provides hardware isolation between secure and non-secure software, enhancing security for critical applications.
• Analog and Digital Peripherals
  • 12-bit 500ksps Analogue to Digital Converter (ADC)
  • 2 × UART, 2 × I2C, 2 × SPI, 16 × PWM channels
  • 1 × Timer with 4 alarms, 1 × Real Time Counter
  • 3 × Programmable IO (PIO) blocks, 12 state machines total
  • Flexible, user-programmable high-speed IO
  • Can emulate interfaces such as SD Card and VGA
• W5100S Ethernet Controller
  • 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
  • High Speed Serial Peripheral Interface (SPI MODE 0, 3)
• Connectivity
  • 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
• Networking
  • 10 / 100 Ethernet PHY embedded
  • Supports Auto-Negotiation
    • Full / Half Duplex
    • 10 / 100 Based
  • Built-in RJ45(RB1-125BAG1A)
• Power Supply
  • Built-in Switch-mode DC-DC converter (replacing LDO for enhanced power efficiency)

Resources

• Product Documentation
• Firmware Examples (C/C++)
  • Ethernet Examples
  • AWS Examples
  • Azure Examples
  • LwIP Examples
• RP2350 datasheet
• W5100S Datasheet
• Schematic
• Part list & Gerber File
• CE Certificate
• CE Test Report
• FCC Certificate
• FCC Test Report

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
• Recommended maximum ambient temperature of operation is 70C.

Package Contents

• 1x WIZnet W5100S-EVB-Pico2