Pimoroni PGA2350 RP2350 Breakout Board

The Pimoroni PGA2350 is a minimal but powerful RP2350 breakout board modelled on a Pin Grid Array (PGA), designed to cram the maximum exposed pins into the smallest possible space of approximately 25.4mm square footprint. It's compact and perfect for embedding in space-limited projects.

This breakout board contains the essential components for running the RP2350B chip including the crystal, regulator, and support circuits. It offers 8MB of PSRAM and a prodigious 16MB of flash storage. Note that it does not include LEDs, buttons, or USB connectors - you will need to attach your own USB connector for programming.

The PGA2350 exposes 64 pins arranged with 2.54mm (0.1") spacing. There are 48 multifunction General Purpose IO pins, 8 of which can be used as ADC inputs. It also features 6 GND pins and an on-board 3.3V regulator with max 300mA output. The input voltage range on the VB pin is 3V to 5.5V. Header pins are sold separately.

The current batch uses the original A2 stepping of the RP2350 chip affected by the RP2350-E9 erratum which may require external pull-down resistors if pulling inputs low.

Features:

• RP2350B Dual core Arm Cortex M33 processor running up to 150MHz with 520KB SRAM
• 16MB QSPI flash supporting XiP
• 8MB PSRAM (CS wired to GP47 via cuttable trace)
• Crystal oscillator
• On-board 3.3V regulator with 300mA max output
• 64 pins arranged in Pin Grid Array with 2.54mm spacing
• 48 multi-function GPIO pins (8 ADC capable)
• 6 ground pins
• Input voltage range 3V - 5.5V on VB pin only
• Compact size approx 25.4mm x 25.4mm x 3.6mm
• Programmable with C/C++ or MicroPython

Additional Resources:

• Pinout Diagram
• Printable PDF Pinout
• Schematic
• Mechanical Diagram
• RP2350 MicroPython builds and examples
• CircuitPython for PGA2350

Please note to program PGA2350 via USB, you need to connect VB, GND, U+, and U- pins properly. Use a USB breakout board to easily connect wires. Enter BOOTSEL mode by grounding the BS pin while plugging in USB.