The Raspberry Pi Pico W is a microcontroller with an RP2040 chip featuring 802.11n wireless networking, 2 x ARM Cortex-M0+ cores clocked at 133MHz; 256KB RAM; 2 MB of onboard Flash, 30 GPIO pins; and a range of interfacing options. It is a single-sided PCB measuring just 21mm x 51.3mm with a micro-USB port and 40 main user pins with through-hole pins to allow for surface mounting.
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(edit with the Customer Reassurance module)
The Raspberry Pi Pico W is a low-cost, high-performance microcontroller board with flexible digital interfaces and 802.11n wireless networking. It features the RP2040 which marks Raspberry Pi's first microcontroller designed in-house. Pico W provides minimal (yet flexible) external circuitry to support the RP2040 chip (Flash, crystal, power supplies and decoupling and USB connector). The majority of the RP2040 microcontroller pins are brought to the user IO pins on the left and right edge of the board. Four RP2040 IO are used for internal functions - driving an LED, on-board Switched Mode Power Supply (SMPS) power control and sensing the system voltages.