Raspberry Pi Pico W

The Raspberry Pi foundation changed single-board computing when they released the Raspberry Pi computer; now they're ready to do the same for microcontrollers with the release of the brand new Raspberry Pi Pico W. This low-cost microcontroller board features their powerful new chip, the RP2040, and all the Fixin's to get started with IoT embedded electronics projects at a stress-free price.

Raspberry Pi Pico W brings WiFi + BLE (coming soon) wireless networking to the Pico platform while retaining complete pin compatibility with its older sibling.

Raspberry Pi Pico W is just like the classic Pico but adds on-board single-band 2.4GHz wireless interfaces (802.11n) using the Infineon CYW43439 while retaining the Pico form factor. The on-board 2.4GHz wireless interface has the following features:

• Wireless (802.11n), Single-band (2.4 GHz) WiFi with WPA3 and Soft Access Point supporting up to 4 clients
• Bluetooth Low Energy - note this isn't supported in software yet; it's just a hardware capability.
• The wireless interface is connected via SPI to the RP2040 microcontroller and has a microphone driver for wireless capability.

Due to pin limitations (the Pico brings out all the GPIO), some of the wireless interface pins are shared with the exposed pads:

• The SPI CLK is shared with the VSYS monitor, so only when there isn’t an SPI transaction in progress can VSYS be read via the ADC.
• The Infineon CYW43439 SPI DIN/DOUT and IRQ share one pin on the RP2040. Only when an SPI transaction isn’t in progress is it suitable to check for IRQs.
• The interface typically runs at 33MHz.