树莓派 Pico 引脚功能（Pinout）

Pin	Name	SPI	I2C	UART	PWM
1	GP0	SPI0 RX	I2C0 SDA	UART0 TX	PWM0 A
2	GP1	SPI0 CSn	I2C0 SCL	UART0 RX	PWM0 B
3	Ground
4	GP2	SPI0 SCK	I2C1 SDA	UART0 CTS	PWM1 A
5	GP3	SPI0 TX	I2C1 SCL	UART0 RTS	PWM1 B
6	GP4	SPI0 RX	I2C0 SDA	UART1 TX	PWM2 A
7	GP5	SPI0 CSn	I2C0 SCL	UART1 RX	PWM2 B
8	Ground
9	GP6	SPI0 SCK	I2C1 SDA	UART1 CTS	PWM3 A
10	GP7	SPI0 TX	I2C1 SCL	UART1 RTS	PWM3 B
11	GP8	SPI1 RX	I2C0 SDA	UART1 TX	PWM4 A
12	GP9	SPI1 CSn	I2C0 SCL	UART1 RX	PWM4 B
13	Ground
14	GP10	SPI1 SCK	I2C1 SDA	UART1 CTS	PWM5 A
15	GP11	SPI1 TX	I2C1 SCL	UART1 RTS	PWM5 B
16	GP12	SPI1 RX	I2C0 SDA	UART0 TX	PWM6 A
17	GP13	SPI1 CSn	I2C0 SCL	UART0 RX	PWM6 B
18	Ground
19	GP14	SPI1 SCK	I2C1 SDA	UART0 CTS	PWM7 A
20	GP15	SPI1 TX	I2C1 SCL	UART0 RTS	PWM7 B

Raspberry Pi Pico with the micro USB port facing upwards, standing face-up on its GPIO pins.

Raspberry Pi Pico with the micro USB port facing downwards, standing bottom-up on its GPIO pins.

Pin	Name/ADC	SPI	I2C	UART	PWM
40	VBUS
39	VSYS
38	Ground
37	3V3 En
36	3V3 Out
35	ADC VRef
34	GP28 / A2	SPI1 RX	I2C0 SDA	UART0 TX	PWM6 A
33	ADC Gnd
32	GP27 / A1	SPI1 TX	I2C1 SCL	UART1 RTS	PWM5 B
31	GP26 / A0	SPI1 SCK	I2C1 SDA	UART1 CTS	PWM5 A
30	RUN
29	GP22	SPI0 SCK	I2C1 SDA	UART1 CTS	PWM3 A
28	Ground
27	GP21	SPI0 CSn	I2C0 SCL	UART1 RX	PWM2 B
26	GP20	SPI0 RX	I2C0 SDA	UART1 TX	PWM2 A
25	GP19	SPI0 TX	I2C1 SCL	UART0 RTS	PWM1 B
24	GP18	SPI0 SCK	I2C1 SDA	UART0 CTS	PWM1 A
23	Ground
22	GP17	SPI0 CSn	I2C0 SCL	UART0 RX	PWM0 B
21	GP16	SPI0 RX	I2C0 SDA	UART0 TX	PWM0 A

SWCLK

GND

SWDIO

引脚	功能	说明
GP23	RT6150B-33GQW Power-Select	PFM 时为低电平 PWM 时为高电平
GP24	VBUS Sense	检测 USB 电源或 VBUS 引脚
GP25	User LED	板载 LED
GP29 / A3	VSYS Sense	通过电阻分压器和 FET Q1 读取 VSYS/3
A4	Temperature	读取板载温度传感器