WIZnet
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. |
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 21x51 '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
What's in the box?
1 x WIZnet W5500-EVB-Pico-POE
Resources
- Product Documentation
- Firmware Examples (C/C++)
- 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
The WIZnet WIZPoE-P1 is a versatile and compact Power over Ethernet (PoE) module designed to deliver power to external applications through Ethernet cabling, supporting both Mode A (Endspan) and Mode B (Midspan) configurations.
It has been designed to complement a range of compatible WIZnet EVB-Pico boards (see compatibility list below).
This open-source hardware module is compliant with the IEEE802.3af standard, enabling the delivery of power (up to 7W) alongside data to devices, thereby eliminating the need for separate power cables and reducing installation complexity.
The module's design focuses on efficiency and safety, featuring high DC/DC conversion efficiency and electrical isolation to ensure reliable operation and device protection.
WIZnet EVB-Pico board not included.
Features
- IEEE802.3af Compliance: Guarantees compatibility with a broad range of PoE-capable devices, ensuring a reliable power solution over Ethernet infrastructure.
- Dual Mode Operation: Supports both Mode A (Endspan) and Mode B (Midspan) for flexible deployment options in various network environments.
- Wide Input Voltage Range: Accommodates a wide range of input voltages (40Vdc to 60Vdc), providing versatility in power supply choices.
- High DC/DC Conversion Efficiency: Optimized for high efficiency in power conversion, minimizing energy loss and ensuring maximum power delivery to connected devices.
- Electrical Isolation: Features isolation between the power input and Ethernet output, enhancing safety and protecting connected devices from potential electrical hazards.
- Built-in Bridge Rectifiers: Includes internal 2-channel bridge rectifiers, simplifying the circuit design by eliminating the need for additional rectification components.
Compatible WIZnet Modules
- W55RP20-EVB-Pico
- W5500-EVB-Pico-PoE
- W5100S-EVB-Pico2
- W5500-EVB-Pico2
- W6100-EVB-Pico2
- Surf 5
Electrical Characteristics
| Value | Symbol | Min | Typical | Max | Units |
| Line Regulation | VLINE | 2.5 | 7.5 | % | |
| Load Regulation | VLOAD | 2.5 | 7.5 | V | |
| Output Ripple and Noise | VRN | 20 | 100 | 200 | mVp-p |
| Load Regulation | RLOAD | 150 | 200 | 250 | mA |
| Efficiency @80% Load | EFF | 70 | 80 | 90 | % |
Electrical Parameter technical standards
| Value | Symbol | Min | Typical | Max | Units |
| Input Voltage | VCC | 41 | 61 | V | |
| Output Voltage | VCC | 4.75 | 5 | 5.25 | V |
| Output Power | PWR | 8 | W | ||
| Switching Frequency | Freq | 280 | 300 | 320 | kHz |
What's in the box?
1 x WIZnet WIZPoE-P1 module
EVB-Pico board not included
Resources
- 1