Raspberry Pi Pico

Raspberry Pi · RP2040

Filter pins

Showing 40 of 40 pins

Simplified technical illustration. Pin data is source-backed; verify against the linked documentation before wiring.

Hover, tap, or focus a pad to inspect a pin. Use arrow keys to move between pins.

Pico exposes RP2040 GPIO0 through GPIO28, with GPIO23 through GPIO25 used internally.
ADC pins are GP26, GP27, and GP28; ADC_VREF is available on physical pin 35.
GPIO is 3.3 V logic and is not 5 V tolerant.

Full pin list, synchronized with the board drawing.
#	Role	Net	Also / notes
1	UART	UART0	UART0 TX
2	UART	UART0	UART0 RX
3	Ground	GND
4	GPIO
5	GPIO
6	I2C	I2C0	I2C0 SDA
7	I2C	I2C0	I2C0 SCL
8	Ground	GND
9	GPIO
10	GPIO
11	SPI	SPI1	SPI1 RX
12	SPI	SPI1	SPI1 CS
13	Ground	GND
14	SPI	SPI1	SPI1 SCK
15	SPI	SPI1	SPI1 TX
16	GPIO
17	GPIO
18	Ground	GND
19	GPIO
20	GPIO
40	Power	VBUS
39	Power	VSYS
38	Ground	GND
37	System
36	Power	3V3
35	ADC
34	ADC		ADC2
33	Ground	AGND
32	ADC		ADC1
31	ADC		ADC0
30	System
29	GPIO
28	Ground	GND
27	I2C	I2C0	I2C0 SCL
26	I2C	I2C0	I2C0 SDA
25	SPI	SPI0	SPI0 TX
24	SPI	SPI0	SPI0 SCK
23	Ground	GND
22	SPI	SPI0	SPI0 CS
21	SPI	SPI0	SPI0 RX

Loading source-backed pinouts…

Raspberry Pi · RP2040

Filter pins

Showing 40 of 40 pins

Simplified technical illustration. Pin data is source-backed; verify against the linked documentation before wiring.

Hover, tap, or focus a pad to inspect a pin. Use arrow keys to move between pins.

Pico exposes RP2040 GPIO0 through GPIO28, with GPIO23 through GPIO25 used internally.
ADC pins are GP26, GP27, and GP28; ADC_VREF is available on physical pin 35.
GPIO is 3.3 V logic and is not 5 V tolerant.

Full pin list, synchronized with the board drawing.
#	Role	Net	Also / notes
1	UART	UART0	UART0 TX
2	UART	UART0	UART0 RX
3	Ground	GND
4	GPIO
5	GPIO
6	I2C	I2C0	I2C0 SDA
7	I2C	I2C0	I2C0 SCL
8	Ground	GND
9	GPIO
10	GPIO
11	SPI	SPI1	SPI1 RX
12	SPI	SPI1	SPI1 CS
13	Ground	GND
14	SPI	SPI1	SPI1 SCK
15	SPI	SPI1	SPI1 TX
16	GPIO
17	GPIO
18	Ground	GND
19	GPIO
20	GPIO
40	Power	VBUS
39	Power	VSYS
38	Ground	GND
37	System
36	Power	3V3
35	ADC
34	ADC		ADC2
33	Ground	AGND
32	ADC		ADC1
31	ADC		ADC0
30	System
29	GPIO
28	Ground	GND
27	I2C	I2C0	I2C0 SCL
26	I2C	I2C0	I2C0 SDA
25	SPI	SPI0	SPI0 TX
24	SPI	SPI0	SPI0 SCK
23	Ground	GND
22	SPI	SPI0	SPI0 CS
21	SPI	SPI0	SPI0 RX