Raspberry Pi RP2350 devkit features 1.85-inch round touch display, microphone, optional speaker and battery box
Abstract
Waveshare has introduced the RP2350-Touch-LCD-1.85C devkit, built around the new Raspberry Pi RP2350A microcontroller, which features a 1.85-inch round touchscreen and integrated audio capabilities for HMI solutions. The core innovation lies in the RP2350 MCU’s hybrid architecture, offering developers the choice of using either two 150 MHz Arm Cortex-M33 cores or two 150 MHz Hazard3 RISC-V cores. This highly integrated development platform also includes 16MB flash, a 6-axis IMU, and options for a speaker and battery box.
Report
Key Highlights
- New Devkit: Introduction of the Waveshare RP2350-Touch-LCD-1.85C devkit, powered by the Raspberry Pi RP2350A microcontroller.
- Display: Features a 1.85-inch round touch display with a 360x360 resolution, ideal for wearable or compact HMI designs.
- Hybrid Architecture: The RP2350 MCU uniquely offers a choice between dual Arm Cortex-M33 or dual Hazard3 RISC-V cores (two usable cores configured at boot).
- HMI Focus: Designed explicitly for Human-Machine Interface (HMI) solutions utilizing touch, button, and voice recognition inputs, alongside display and audio outputs.
- Variants: The RP2350-Touch-LCD-1.85C-BOX model includes an enclosure with a speaker and a 3.7V battery for portable application development.
Technical Details
| Specification | Detail |
|---|---|
| Microcontroller | Raspberry Pi RP2350A MCU |
| CPU Cores | 2x Arm Cortex-M33 @ 150 MHz, 2x Hazard3 RISC-V @ 150 MHz |
| Core Usage | Up to two cores can be active at any time (configurable at boot) |
| SRAM / OTP | 520KB SRAM / 8KB OTP |
| External Storage | 16MB SPI NOR flash, microSD card slot |
| Connectivity | USB-C port, 28-pin GPIO header, UART and I2C expansion connectors |
| Peripherals | Built-in microphone, 6-axis IMU, buttons, LEDs |
| Package | QFN-60; 7x7 mm |
Implications
- RISC-V Validation: The inclusion of Hazard3 RISC-V cores in a mainstream Raspberry Pi-branded microcontroller is a significant endorsement, providing a major new platform for RISC-V development and ecosystem growth in the embedded space.
- Architectural Flexibility: The ability to choose between the established Arm ecosystem or the increasingly popular RISC-V architecture on the same hardware platform offers developers unprecedented flexibility in optimizing for specific software requirements or licensing preferences.
- Embedded IoT/HMI Market Capture: By tightly integrating features like a round touch display, microphone, and IMU, the RP2350 devkit is positioned to compete aggressively in the burgeoning market for smart wearables, industrial control panels, and voice-activated IoT devices. The move reinforces Raspberry Pi's commitment to creating specialized, highly integrated silicon following the success of the RP2040.
Technical Deep Dive Available
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