Adafruit Metro RP2350

Overview

The Adafruit Metro RP2350 brings Raspberry Pi's RP2350 microcontroller into an Arduino Uno-compatible form factor, delivering a significant performance upgrade over the RP2040-based Metro. The RP2350 offers dual ARM Cortex-M33 cores (or dual RISC-V Hazard3 cores) at 150 MHz with hardware floating-point, 520 KB SRAM, 12 PIO state machines, and TrustZone security — roughly doubling performance and memory compared to its predecessor.

The Metro RP2350 provides 16 MB of QSPI flash and a microSD socket (SPI and SDIO-capable) for generous storage. A 22-pin 3-lane differential HSTX FPC connector (Pi 5-compatible) enables high-speed data output for displays and video. The board exposes 23 GPIO on standard Arduino headers, 6 analog inputs, 24 PWM channels, plus 12 additional GPIO via the HSTX port and 2 for USB host. A 5.5mm/2.1mm DC barrel jack accepts 6–17V via a TPS563201 buck converter (up to 2A), with USB Type-C as the primary power and data port.

On-board peripherals include a NeoPixel, LED on pin 23, reset and bootloader buttons, a DPDT RX/TX switch, Pico Probe debug connector, STEMMA QT, and an on/off switch for the DC jack. Fully supported by CircuitPython, MicroPython, C/C++ (Pico SDK), and informal Arduino support. Note: ships with the RP2350 A2 revision affected by the E9 erratum on GPIO pulldown inputs.