Raspberry Pi Pico W

Microcontroller board based on RP2040 with dual Cortex-M0+ cores at 133MHz, 264KB SRAM, 2MB flash, 26 GPIO, and 2.4GHz Wi-Fi/Bluetooth via CYW43439.

GPIO0-GPIO22main 40-pin edge connector, see official Pico W pin allocation
Main 40-pin edge connector exposes RP2040 multi-function GPIO pins for digital I/O, UART, I2C, SPI and PWM as documented in the Raspberry Pi Pico W datasheet pinout section.
Type · digital ioVoltage · 3.3 V fixed I/O voltage; datasheet warns Pico W I/O voltage is fixed at 3.3 V.
GPIO26 / ADC0main 40-pin edge connector, see official Pico W pin allocation
RP2040 ADC-capable GPIO on the main edge connector.
Type · analogue ioVoltage · 3.3 V I/O; ADC reference uses ADC_VREF.
GPIO27 / ADC1main 40-pin edge connector, see official Pico W pin allocation
RP2040 ADC-capable GPIO on the main edge connector.
Type · analogue ioVoltage · 3.3 V I/O; ADC reference uses ADC_VREF.
GPIO28 / ADC2main 40-pin edge connector, see official Pico W pin allocation
RP2040 ADC-capable GPIO on the main edge connector.
Type · analogue ioVoltage · 3.3 V I/O; ADC reference uses ADC_VREF.
VBUSpin 40
Micro-USB input voltage connected to micro-USB port pin 1.
Type · powerVoltage · Nominally 5 V when USB is powered, or 0 V if USB is not connected or powered.
VSYSpin 39
Main system input voltage used by the on-board SMPS to generate 3.3 V.
Type · powerVoltage · Allowed range 1.8 V to 5.5 V.
3V3_ENpin 37
On-board SMPS enable pin, pulled high to VSYS; short low to disable 3.3 V and depower RP2040.
Type · controlVoltage · Pulled high to VSYS via 100 kΩ.
3V3pin 36
Main 3.3 V supply generated by the on-board SMPS for RP2040, I/O, and external circuitry.
Type · powerVoltage · 3.3 V output; Raspberry Pi recommends keeping external load under 300 mA.
ADC_VREFpin 35
ADC power supply/reference voltage, generated on Pico W by filtering the 3.3 V supply; can use an external reference if required.
Type · analogue referenceVoltage · Normally filtered 3.3 V reference.
AGNDpin 33
Analogue ground reference for GPIO26-GPIO29 ADC signals.
Type · ground
RUNpin 30
RP2040 enable/reset pin; short low to reset RP2040.
Type · controlVoltage · Internal pull-up to 3.3 V about 50 kΩ.
GNDmultiple ground pins on main 40-pin edge connector
Ground pins on the main 40-pin interface reduce EMI and signal crosstalk and provide board ground reference.
Type · groundVoltage · 0 V reference.
TP1test point TP1
Close-coupled ground test point for differential USB signals.
Type · groundVoltage · 0 V reference.
TP2 / USB DMtest point TP2
USB D- signal test point; can access USB signals instead of the micro-USB port.
Type · usbVoltage · USB differential signal.
TP3 / USB DPtest point TP3
USB D+ signal test point; can access USB signals instead of the micro-USB port.
Type · usbVoltage · USB differential signal.
TP6 / BOOTSELtest point TP6
BOOTSEL test point; short low at power-up to enter USB mass-storage programming mode.
Type · controlVoltage · Board control signal.
WL_GPIO0 / LEDon-board LED / TP5
Wireless chip GPIO connected to the user LED; Raspberry Pi notes TP5 access is not recommended for general use.
Type · indicatorVoltage · Only swings from 0 V to the LED forward voltage when accessed at TP5.
Micro-USBmicro-USB connector
USB 1.1 device or host connector for power, programming, mass-storage boot, and data.
Type · usb power dataVoltage · VBUS nominally 5 V when powered.

Pin	Position	Type	Function	Voltage
GPIO0-GPIO22	main 40-pin edge connector, see official Pico W pin allocation	digital io	Main 40-pin edge connector exposes RP2040 multi-function GPIO pins for digital I/O, UART, I2C, SPI and PWM as documented in the Raspberry Pi Pico W datasheet pinout section.	3.3 V fixed I/O voltage; datasheet warns Pico W I/O voltage is fixed at 3.3 V.
GPIO26 / ADC0	main 40-pin edge connector, see official Pico W pin allocation	analogue io	RP2040 ADC-capable GPIO on the main edge connector.	3.3 V I/O; ADC reference uses ADC_VREF.
GPIO27 / ADC1	main 40-pin edge connector, see official Pico W pin allocation	analogue io	RP2040 ADC-capable GPIO on the main edge connector.	3.3 V I/O; ADC reference uses ADC_VREF.
GPIO28 / ADC2	main 40-pin edge connector, see official Pico W pin allocation	analogue io	RP2040 ADC-capable GPIO on the main edge connector.	3.3 V I/O; ADC reference uses ADC_VREF.
VBUS	pin 40	power	Micro-USB input voltage connected to micro-USB port pin 1.	Nominally 5 V when USB is powered, or 0 V if USB is not connected or powered.
VSYS	pin 39	power	Main system input voltage used by the on-board SMPS to generate 3.3 V.	Allowed range 1.8 V to 5.5 V.
3V3_EN	pin 37	control	On-board SMPS enable pin, pulled high to VSYS; short low to disable 3.3 V and depower RP2040.	Pulled high to VSYS via 100 kΩ.
3V3	pin 36	power	Main 3.3 V supply generated by the on-board SMPS for RP2040, I/O, and external circuitry.	3.3 V output; Raspberry Pi recommends keeping external load under 300 mA.
ADC_VREF	pin 35	analogue reference	ADC power supply/reference voltage, generated on Pico W by filtering the 3.3 V supply; can use an external reference if required.	Normally filtered 3.3 V reference.
AGND	pin 33	ground	Analogue ground reference for GPIO26-GPIO29 ADC signals.
RUN	pin 30	control	RP2040 enable/reset pin; short low to reset RP2040.	Internal pull-up to 3.3 V about 50 kΩ.
GND	multiple ground pins on main 40-pin edge connector	ground	Ground pins on the main 40-pin interface reduce EMI and signal crosstalk and provide board ground reference.	0 V reference.
TP1	test point TP1	ground	Close-coupled ground test point for differential USB signals.	0 V reference.
TP2 / USB DM	test point TP2	usb	USB D- signal test point; can access USB signals instead of the micro-USB port.	USB differential signal.
TP3 / USB DP	test point TP3	usb	USB D+ signal test point; can access USB signals instead of the micro-USB port.	USB differential signal.
TP6 / BOOTSEL	test point TP6	control	BOOTSEL test point; short low at power-up to enter USB mass-storage programming mode.	Board control signal.
WL_GPIO0 / LED	on-board LED / TP5	indicator	Wireless chip GPIO connected to the user LED; Raspberry Pi notes TP5 access is not recommended for general use.	Only swings from 0 V to the LED forward voltage when accessed at TP5.
Micro-USB	micro-USB connector	usb power data	USB 1.1 device or host connector for power, programming, mass-storage boot, and data.	VBUS nominally 5 V when powered.

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