// Microcontrollers

Raspberry Pi Pico

The Raspberry Pi Pico is a low-cost microcontroller board based on the RP2040 chip. It features a dual-core ARM Cortex-M0+ at up to 133MHz, 264KB SRAM, 2MB flash, and 26 multi-function GPIO pins. Programmable in MicroPython or C/C++.

// Specifications

Chip

RP2040

Cores

Dual ARM Cortex-M0+

Clock

Up to 133 MHz

Flash

2MB on-board

SRAM

264 KB

GPIO

26 multi-function

// Pin Reference Table

Pin	Name	Function	Type
1	GP0	UART0 TX, I2C0 SDA, SPI0 RX	BUS
2	GP1	UART0 RX, I2C0 SCL, SPI0 CSn	BUS
3	GND	Ground	GND
4	GP2	SPI0 SCK, I2C1 SDA	BUS
5	GP3	SPI0 TX, I2C1 SCL	BUS
6	GP4	UART1 TX, I2C0 SDA	BUS
7	GP5	UART1 RX, I2C0 SCL	BUS
8	GND	Ground	GND
9	GP6	SPI0 SCK, I2C1 SDA	I/O
10	GP7	SPI0 TX, I2C1 SCL	I/O
11	GP8	UART1 TX, SPI1 RX	I/O
12	GP9	UART1 RX, SPI1 CSn	I/O
13	GND	Ground	GND
14	GP10	SPI1 SCK, I2C1 SDA	I/O
15	GP11	SPI1 TX, I2C1 SCL	I/O
16	GP12	SPI1 RX, I2C0 SDA	I/O
17	GP13	SPI1 CSn, I2C0 SCL	I/O
18	GND	Ground	GND
19	GP14	SPI1 SCK	I/O
20	GP15	SPI1 TX	I/O
21	GP16	SPI0 RX, I2C0 SDA	I/O
22	GP17	SPI0 CSn, I2C0 SCL	I/O
23	GND	Ground	GND
24	GP18	SPI0 SCK	I/O
25	GP19	SPI0 TX	I/O
26	GP20	I2C0 SDA	I/O
27	GP21	I2C0 SCL	I/O
28	GND	Ground	GND
29	GP22	General purpose I/O	I/O
30	RUN	Reset, active low	I/O
31	GP26/ADC0	ADC input 0	ADC
32	GP27/ADC1	ADC input 1	ADC
33	AGND	Analog ground	GND
34	GP28/ADC2	ADC input 2	ADC
35	ADC_VREF	ADC reference voltage	ADC
36	3V3	3.3V output	PWR
37	3V3_EN	3.3V enable	I/O
38	GND	Ground	GND
39	VSYS	Main input voltage 1.8–5.5V	PWR
40	VBUS	USB 5V input	PWR