Raspberry PI Pico	Arduino Nano RP2040 Connect	Seeeduino Xiao	Arduino Nano Every	Arduino Nano	Arduino Micro	BBC Micro:bits	BBC Micro:bit v2
Image
Website	https://www.raspberrypi.org/products/raspberry-pi-pico/		https://www.seeedstudio.com/Seeeduino-XIAO-Arduino-Microcontroller-SAMD21-Cortex-M0+-p-4426.html	https://store.arduino.cc/arduino-nano-every	https://store.arduino.cc/arduino-nano	https://store.arduino.cc/arduino-micro	https://microbit.org/	https://microbit.org/new-microbit/
Release date	2021-01-21	2021 Q1	2020-03-12	2019	2008-05-15	2012-11-08	2015	2020-10-13
Price	4 USD		5 USD	9 EUR			15 USD	15 USD
Pinout image
Product details
CPU	RP2040 dual-core Arm Cortex-M0+	RP2040 dual-core Arm Cortex-M0+	ARM® Cortex®-M0+ 32bit SAMD21G18	ATMega4809	ATmega328	ATmega32U4	nRF51822 ARM Cortex-M0 32 bit	nRF52833 Arm Cortex-M4 32 bit with FPU
CPU Clock	133 MHz	133 MHz	48 MHz	20 MHz	16 MHz	16 MHz	16 MHz	64 MHz
RAM	264 KB	264 KB	32 KB	6 KB	2 KB	2.5 KB	16 KB	128 KB
ROM	2 MB (up to 16 MB)		256 KB	48 KB	32 KB	32 KB	256 KB	512 KB
EEPROM	No		No	Yes 0.25 KB (256 B)	Yes 1 KB	Yes 1 KB
Vin Min-Max	1.8V - 5.5V		3.3V - 5V	7V - 21V	7V - 21V	7V - 9V
Operating voltage	3.3 V		3.3 V	5 V	5 V	5 V	3.3 V	3.3 V
Deep sleep consumption	1.3 mA
USB	Yes micro-USB (USB 1.1 Device / Host)		Yes USB C	Yes micro-USB	Yes mini-USB		Yes micro-USB	Yes micro-USB
Connectivity
GPIO	26		11	14	14	20	19	19
UART	x2		x1	x1	x1	x1	x1	x1
I²C	Yes x2	Yes	Yes	Yes x1	Yes x1	Yes	Yes	Yes
ADC	Yes x3 12-bit	Yes	Yes x10 12-bit	Yes x8 10-bit	Yes x8 10bit	Yes	Yes x6 10-bit	Yes x6 10-bit
PWM	Yes x16	Yes	Yes x10	Yes x5	Yes x6	Yes	Yes x3	Yes x3
DAC	No		Yes x1	No	No	No	No	No
SPI	Yes x2	Yes	Yes	Yes 1	Yes x1		Yes x3	Yes x3
USB Host	Yes	Yes	Yes	No	No		Yes	Yes
RTC	Yes		No	No	No	No	No	No
Bluetooth®	No	Yes	No	No	No	No	Yes BLE 4.0	Yes BLE 5.1
Wi-Fi	No	Yes	No	No	No	No	No	No
Sensors
Accelerometer	No	Yes	No	No	No	No	Yes	Yes
Temperature sensor	Yes	No	No	No	No	No	Yes	Yes
Built-in microphone	No	Yes	No	No	No	No	No	Yes
Built-in speaker	No	No	No	No	No	No	No	Yes
Hall effect sensor	No	No	No	No	No	No	No	No
Touch sensors							-	Touch-sensitive logo pin
Security
Cryptography support		ECC608 Cryptography chip
Software
Programming Language	MicroPython, C/C++	C/C++	CircuitPython, MicroPython, C/C++	C/C++	C/C++	C/C++	MicroPython, C/C++, Code blocks, Arduino	MicroPython, C/C++, Code blocks, Arduino
Arduino support	- Planned	Yes	- IDE Arduino ok	Yes	Yes	Yes	- Possible	- Possible
Drag & Drop upload	Yes		Yes	No	No	No	Yes	Yes
Dimensions
Height	21 mm		17.5 mm	18 mm	18.54 mm	18 mm	43 mm	43 mm
Width	51 mm		20 mm	45 mm	43.18 mm	48 mm	52 mm	52 mm
Front view
Links
Wikipedia				https://en.wikipedia.org/wiki/Arduino	https://en.wikipedia.org/wiki/Arduino	https://en.wikipedia.org/wiki/Arduino	https://en.wikipedia.org/wiki/Micro_Bit	https://en.wikipedia.org/wiki/Micro_Bit
Website	https://www.raspberrypi.org/products/raspberry-pi-pico/		https://www.seeedstudio.com/Seeeduino-XIAO-Arduino-Microcontroller-SAMD21-Cortex-M0+-p-4426.html	https://store.arduino.cc/arduino-nano-every	https://store.arduino.cc/arduino-nano	https://store.arduino.cc/arduino-micro	https://microbit.org/	https://microbit.org/new-microbit/