Bulgaria-based Clintech Ltd. has released the first development board built around the Raspberry Pi RP2354B microcontroller with 2MB on-chip flash memory. The Clintech Pico Board maintains the same 51 x 21 mm (2.0 x 0.8 inch) form factor as the standard Raspberry Pi Pico 2 while exposing all 48 general-purpose I/O pins available on the RP2354B chip.
The board features the standard 40 castellated and through-hole connections found on Raspberry Pi Pico boards, breaking out GPIOs 0 through 22 and 26 through 28 along with three debug pins. The remaining GPIOs (23 through 25 and 29 through 47) plus the QSPI interface for external memory are accessible through 27 additional through-holes on the board. The RP2354B chip itself offers dual-core Arm Cortex-M33 or dual-core RISC-V Hazard3 processors running at 150 MHz, 520 KB on-chip SRAM, and that integrated 2MB flash storage. Users can run either two Arm cores, two RISC-V cores, or one of each simultaneously.
Like other Raspberry Pi Pico-compatible boards, the Clintech Pico supports UF2 drag-and-drop firmware flashing via USB mass storage mode and works with the standard Raspberry Pi Pico C/C++ and MicroPython SDKs. CircuitPython also supports the RP2350 family, giving developers multiple open-source firmware options. For those working with the RISC-V cores, the recently released RISCstar toolchain provides pre-compiled GNU toolchains specifically targeting RP2350 devices, eliminating the need to manually compile a RISC-V development environment on Linux. The board includes a USB Type-C port for power and data, an onboard 3.3V LDO regulator rated for 500 mA, a BOOTSEL button, and an LED connected to GPIO25. Developers can also add up to 16 MB of external QSPI flash or PSRAM through four through-holes on the bottom of the board.
The Clintech Pico is available from Tindie for $20 (€18) with worldwide shipping from Bulgaria. Additional documentation and the board datasheet can be found on the Clintech website.
