Raspberry Pi Pico W — RP2040, Wi-Fi 4, Bluetooth 5.2 LE, 264KB SRAM, 2MB Flash

The Raspberry Pi Pico W adds wireless connectivity to the original Pico, combining the RP2040 microcontroller with an Infineon CYW43439 chip for Wi-Fi 4 (802.11n) and Bluetooth 5.2 LE. It is pin-compatible with the original Pico and uses the same SDK and MicroPython firmware, making it a straightforward wireless upgrade for any Pico project. Ideal for IoT sensor nodes, MQTT data loggers, and connected embedded systems.

Key Specifications:

• Microcontroller: Raspberry Pi RP2040
• CPU: Dual-core Arm Cortex-M0+ @ up to 133MHz
• SRAM: 264KB on-chip
• Flash: 2MB QSPI (on-board)
• Wireless IC: Infineon CYW43439
• Wi-Fi: 802.11n (Wi-Fi 4), 2.4GHz single-band
• Bluetooth: Bluetooth 5.2 LE (Classic BR/EDR not supported)
• GPIO: 26 multi-function GPIO pins
• ADC: 3 × 12-bit ADC inputs + 1 internal temperature sensor
• PWM: 16 PWM channels
• Interfaces: 2× UART, 2× SPI, 2× I²C, 8 PIO state machines
• USB: USB 1.1 device and host via micro-USB connector
• Antenna: on-board PCB antenna
• Power: 1.8V – 5.5V via VSYS; onboard LDO
• Operating temperature: −20°C to +85°C
• Dimensions: 51mm × 21mm
• Form factor: Castellated module

Wireless Notes:

• Wi-Fi and Bluetooth share the CYW43439 — simultaneous operation supported
• Bluetooth Classic (BR/EDR) is not supported — BLE only
• On-board PCB antenna — keep clear of ground planes for best range
• Wireless drivers included in Pico SDK and MicroPython firmware

Programming:

• MicroPython with network module for Wi-Fi (official Raspberry Pi firmware)
• C/C++ via Raspberry Pi Pico SDK
• CircuitPython (Adafruit)
• UF2 drag-and-drop bootloader or SWD

Applications:

• Wi-Fi connected IoT sensor nodes
• MQTT and HTTP data loggers
• Wireless home automation controllers
• BLE beacons and proximity sensors
• Cloud-connected data acquisition
• Wi-Fi enabled robotics and remote control