W5100S-EVB-Pico2
Overview
W5100S-EVB-Pico2 is a microcontroller evaluation board based on the Raspberry Pi RP2350 and fully hardwired TCP/IP controller W5100S – enhancing the capabilities of the traditional Raspberry Pi Pico board with additional Ethernet functionality via W5100S.
- Enhanced Raspberry Pi Pico Clone
- Ethernet (W5100S Hardwired TCP/IP CHIP)
Revision History
| Date | Version | Description |
|---|---|---|
| Jul 2024 | 1.0 | Initial board release |
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
-
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)
-
Analog and Digital Peripherals
- 12-bit 500ksps Analogue to Digital Converter (ADC)
- Advanced digital peripherals including:
- 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
-
Connectivity
- C-Type USB port for power and data (and for reprogramming the Flash)
- 40 pin 21x51 '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
-
Power Supply
- Built-in Switch-mode DC-DC converter (replacing LDO for enhanced power efficiency)
Hardware Specification
Pin-out v1.0
W5100S-EVB-Pico2 pinout is directly connected to the GPIO of RP2350 as shown in the picture above. 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 Ethernet function. If you are using the Ethernet function, these pins cannot be used for any other purpose.
The RP2350 GPIO used inside W5100S-EVB-Pico2 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 | Micro-USB input voltage, connected to micro-USB 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. |
Operation Condition
| Item | Description |
|---|---|
| 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.
Technical Reference
RP2350 Datasheet
W5100S Datasheet
Schematic v1.0
Schematic & Part list & Gerber File
Dimension v1.0 (Unit : mm)
Firmware Example
Please refer to below links to find firmware example.