RP2350 Touch LCD 1.85 – Development Board with Round Touch Display, Speaker Enclosure and Battery - Waveshare 33302

Description

RP2350 Touch LCD 1.85 in the version with a speaker enclosure and battery is a compact, highly integrated development board designed for building user interfaces, IoT devices, and embedded systems. The onboard RP2350A microcontroller, developed by Raspberry Pi, features a unique dual-core, dual-architecture design, allowing operation using either two ARM Cortex-M33 cores or two Hazard3 RISC-V cores with clock speeds of up to 150 MHz.

The board integrates a round 1.85-inch capacitive IPS LCD with a resolution of 360 x 360 pixels and a 65K color depth. The display provides wide viewing angles, good readability, and smooth touch operation handled via an I2C interface with interrupt support, enabling intuitive and responsive graphical user interface design.

The board is equipped with 16 MB of Flash memory, a microSD card slot, an RTC chip, an audio codec, a microphone, and USB, UART, and I2C communication interfaces. The included speaker box with speaker and the 3.7 V lithium battery allow immediate use in portable, multimedia, and educational projects without the need for additional power components.

1. RP2350A -Dual-core and dual-architecture design, up to 150 MHz operating frequency
2. 16MB NOR-Flash
3. TF card slot
4. Amplifier chip
5. Batt charging management chip
6. Speaker header
7. Batt power supply ON/OFF
8. Microphone
9. UART header
10. Power indicator
11. MX1.25 Batt header - for 3.7V Lithium Batt, supports charging and discharging, with charging current of up to 1A
12. USB Type-C port - for programming, USB 1.1 with device and host support
13. Charge indicator - Lithium Batt charge indicator, lights up when charging, off when fully charged (the light status is uncertain when the Batt is not connected) 
14. 12C header - connecting with internal chip, only supports the 12C peripherals and cannot be mapped to other functions
15. RTC Batt header - for connecting rechargeable RTC Batt
16. RESET button
17. ES8311 - low-power audio codec chip
18. 1.27mm pin header - Reserved 28PIN header, adapting GPIO and other function pins
19. BOOT button - press it when resetting to enter download mode
20. RTC chip - PCF85063 RTC chip

                                                                                                                                  Pin definition

Features

• Microcontroller: RP2350A
• Architecture: dual-core, ARM Cortex-M33 or Hazard3 RISC-V
• Clock frequency: up to 150 MHz
• RAM: 520 KB SRAM
• Flash memory: 16 MB NOR Flash
• Display: capacitive IPS LCD
• Display size: 1.85 inch
• Resolution: 360 x 360
• Color depth: 65K
• Touch interface: I2C with interrupt support
• USB: USB 1.1 device and host
• GPIO: 18 multifunctional pins
• Interfaces: 2 x SPI, 2 x I2C, 2 x UART
• ADC: 4 x 12-bit
• PWM: 12 channels
• PIO: 12 programmable state machines
• RTC: PCF85063
• Audio codec: ES8311
• Card slot: microSD (TF)
• Battery connector: MX1.25 2-pin
• Battery voltage: 3.7 V
• USB port: USB Type-C
• Temperature sensor: built-in
• Supported environments: C/C++, MicroPython, Arduino IDE

Kit includes

• 1x RP2350-Touch-LCD-1.85C-BOX development board
• 1x speaker enclosure
• 1x speaker
• 1x 3.7 V lithium battery
• 2x SH1.0 4-pin cable ~100 mm