This small development board uses the RP2350 chip with a dual-core Arm Cortex M33 processor and dual-core Hazard3 RISC-V processor running up to 150Mhz. There's 2MB of flash memory, a USB-C connector for programming and power and a USB Type-A 2.0 connector that supports a USB host or device via PIO. There are 15 GPIO pins to easily connect to a Raspberry Pi Pico, and plenty of connectors including SPI, I2C, UART and 12-bit ADC. There is also support for C/C++ and Arduino IDE, with resources and tutorials to help get you started! Features * RP2350 microcontroller chip officially designed by Raspberry Pi * Adopts unique dual-core and dual-architecture design, equipped with dual-core ARM Cortex-M33 processor and dual-core Hazard3 RISC-V core processor, flexible clock running up to 150 MHz * Built-in 520KB of SRAM and 2MB of on-chip Flash * 1x USB port, compatible with USB2.0/1.1 transmission * Castellated module allows soldering directly to carrier boards * Drag-and-drop programming using mass storage over USB * 15x Multi-function GPIO pins of RP2350 * Multiple hardware peripherals * 2x SPI * 2x I2C * 2x UART * 4x 12-bit ADC * 14x Controllable PWM channel * Built-in temperature sensor on chip * 12x Programmable I/O (PIO) state machines for custom peripheral support What's on Board * USB 2.0 Type A connector Supports USB host or device via PIO * BOOT button Press it when resetting to enter download mode * RESET button * RP2350A Dual-core and dual-architecture design, up to 150 MHz operating frequency * WS2812 Cool RGB LED * RT9013-33GB 500mA LDO regulator, low noise, ultra-fast response * W25Q16JVUXIQ 2MB NOR-Flash * USB Type-C connector For programming, USB 1.1 with device and host support Resources * Product Wiki * Schematic Pinout Package Contents * 1x RP2350A USB Mini Development Board https://elecena.pl/product/27882123/rp2350a-usb-mini-development-board 2025-02-20 https://elecena.pl/product/27882123/rp2350a-usb-mini-development-board 2025-08-06 https://elecena.pl/product/27882123/rp2350a-usb-mini-development-board 2025-11-28 https://elecena.pl/product/27882123/rp2350a-usb-mini-development-board 2025-11-29