Waveshare rp2040-zero: high-resolution pinout and specs

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Waveshare rp2040-zero pinout
Waveshare rp2040-zero pinout

Waveshare rp2040-zero high resolution pinout image

Here my selection of rp2040 devices Official Pi Pico - Official Pi Pico W - Waveshare rp2040-zero - WeAct Studio rp2040


Power Pins

  • 5v – micro-USB input voltage
  • 3V3 – regulated 3.3V output, 300mA max
  • GND – main ground reference


  • GP0 to GP29 – General Purpose Input Output (GPIO) as well as Pulse Width Modulation (PWM)

I2C Pins

  • SCL0 – I2C port 0 clock
  • SDA0 – I2C port 0 data
  • SCL1 – I2C port 1 clock
  • SDA1 – IC2 port 1 data

SPI Pins

  • SCLK0 – SPI port 0 clock
  • MOSI0 – SPI port 0 data out
  • MISO0 – SPI port 0 data in
  • SCLK1 – SPI port 1 clock
  • MOSI1 – SPI port 1 data out
  • MISO1 – SPI port 1 data in

ADC Pins

  • ADC0 – Analog to Digital Converter (ADC) 0
  • ADC1 – Analog to Digital Converter (ADC) 1
  • ADC2 – Analog to Digital Converter (ADC) 2
  • ADC3 – Analog to Digital Converter (ADC) 3


RP2040-Zero, A Low-Cost, High-Performance Pico-Like MCU Board Based On Raspberry Pi Microcontroller RP2040, with the following key features:

  • RP2040 microcontroller chip designed by Raspberry Pi in the United Kingdom
  • Dual-core Arm Cortex M0+ processor, flexible clock running up to 133 MHz
  • 264KB of SRAM, and 2MB of on-board Flash memory
  • USB-C connector, keeps it up to date, easier to use
  • The castellated module allows soldering direct to carrier boards
  • USB 1.1 with device and host support
  • Low-power sleep and dormant modes
  • Drag-and-drop programming using mass storage over USB
  • 29 × multi-function GPIO pins (20× via edge pinout, others via solder points)
  • 2 × SPI, 2 × I2C, 2 × UART, 4 × 12-bit ADC, 16 × controllable PWM channels
  • Accurate clock and timer on-chip
  • Temperature sensor
  • Accelerated floating-point libraries on-chip
  • 8 × Programmable I/O (PIO) state machines for custom peripheral support

Summary specs

  1. USB Type-C connector
  2. W25Q16JVUXIQ: 2MB NOR-Flash
  3. BOOT button: press it when resetting to enter download mode
  4. RESET button
  5. WS2812: RGB LED
  6. ME621: low dropout LDO, max current 800MA
  7. RP2040: dual-core processor, up to 133MHz operating frequency
  8. RP2040 pins: 10x solder points, 9 of which are for GPIO

How to

  1. Raspberry Pi Pico and rp2040 boards: pinout, specs, and Arduino IDE configuration
  2. Raspberry Pi Pico and rp2040 boards: integrated LittleFS filesystem
  3. Raspberry Pi Pico and rp2040 board: ethernet w5500 with plain (HTTP) and SSL (HTTPS) requests
  4. Raspberry Pi Pico and rp2040 boards: WiFiNINA with ESP32 WiFi Co-Processor
  5. Raspberry Pi Pico and rp2040 boards: how to use SD card
  6. Dallas ds18b20



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rp2040 datasheet

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SPI configuration

To use SPI with this device, you must override the pins_arduino.h to use other SPI pins.

I select the pins from 2 to 4 (you lost I2C, but you can override again to pins 8 and 9).

#pragma once

// Pin definitions taken from:
//    https://datasheets.raspberrypi.org/pico/pico-datasheet.pdf

// For framework 2.4.0 file in 
// rp2040\hardware\rp2040\2.4.0\variants\generic

// LEDs
#define PIN_LED        (25u)

// Serial
#define PIN_SERIAL1_TX (0u)
#define PIN_SERIAL1_RX (1u)

#define PIN_SERIAL2_TX (8u)
#define PIN_SERIAL2_RX (9u)

// SPI
//#define PIN_SPI0_MISO  (16u)
//#define PIN_SPI0_MOSI  (19u)
//#define PIN_SPI0_SCK   (18u)
//#define PIN_SPI0_SS    (17u)

// SPI
#define PIN_SPI0_MISO  (4u)
#define PIN_SPI0_MOSI  (3u)
#define PIN_SPI0_SCK   (2u)
#define PIN_SPI0_SS    (5u)

#define PIN_SPI1_MISO  (12u)
#define PIN_SPI1_MOSI  (15u)
#define PIN_SPI1_SCK   (14u)
#define PIN_SPI1_SS    (13u)

// Wire
//#define PIN_WIRE0_SDA  (4u)
//#define PIN_WIRE0_SCL  (5u)

// Wire
#define PIN_WIRE0_SDA  (8u)
#define PIN_WIRE0_SCL  (9u)

#define PIN_WIRE1_SDA  (26u)
#define PIN_WIRE1_SCL  (27u)

#define SERIAL_HOWMANY (3u)
#define SPI_HOWMANY    (2u)
#define WIRE_HOWMANY   (2u)

#include "../generic/common.h"


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