4" IPS Display Development Board 480×480 with Touch - Waveshare 32700

Description

The Waveshare RP2350-Touch-LCD-4 is a high-performance, highly integrated development board designed for building devices with graphical user interfaces and touch interaction. It is based on the RP2350B microcontroller designed by Raspberry Pi, featuring a unique dual-core, dual-architecture design that allows selection between ARM Cortex-M33 cores or Hazard3 RISC-V cores. The MCU operates at up to 150 MHz and includes 520 kB of SRAM and 16 MB of Flash memory, with the option to expand memory using external PSRAM via dedicated solder pads.

The board integrates a 4-inch IPS display with a resolution of 480 × 480 px, supporting 65K colors and wide viewing angles of up to 160°. The RP2350-Touch-LCD-4 version adds a capacitive touch panel supporting up to 5 touch points, connected via I2C with interrupt support, enabling smooth and intuitive HMI operation.

A rich set of onboard peripherals is provided, including a 6-axis IMU, RTC, TF (microSD) card slot, buzzer, and communication interfaces CAN, RS485, and I2C. The board supports power from a 3.7 V Li-Ion battery with charging capability, as well as an external 7–36 V DC power input. Programming is performed via USB Type-C using drag-and-drop mass storage, with support for C/C++, MicroPython, and Arduino IDE.

Thanks to bottom or rear wiring options, the board is easy to integrate into industrial enclosures, embedded systems, and DIN-rail installations.

                                                                                                                                Controller board layout

1. RP2350B - Dual-core and dual-architecture design, up to 150 MHz operating frequency
2. MX1.25 Lithium Batt. header - MX1.25 2P connector, for 3.7V Lithium Batt., supports charging and discharging
3. Batt. recharge manager
4. Buzzer
5. 16MB Nor Flash
6. SIT65HVD230DR - CAN transceiver
7. PSRAM chip solder pads - Compatible with mainstream PSRAM chips for user expansion (soldering required)
8. DEBUG interface
9. RS485 and CAN terminal resistor selection - close by default
10. RTC Batt. header - for connecting rechargeable RTC Batt. (only supports rechargeable RTC Batt.)
11. XL2515QF20 - CAN controller
12. 3.5mm 10pin screw terminal slot - for installing 3.5mm 10pin screw terminal block
13. SY8293FCC power chip - Supports 7~36V DC power input
14. Power supply indicator
15. USB Type-C connector - for programming, USB 1.1 with device and host support
16. TF card slot
17. BOOT button - Press it when resetting to enter download mode
18. RESET button
19. PCF85063 - RTC chip
20. SP3485 - RS485 transceiver
21. QMI8658 - 6-axis IMU includes a 3-axis gyroscope and a 3-axis accelerometer
22. 4inch display panel connector

Features

• Microcontroller: RP2350B
• Architecture: dual-core ARM Cortex-M33 or dual-core Hazard3 RISC-V
• Clock frequency: up to 150 MHz
• SRAM: 520 kB
• Flash memory: 16 MB
• Memory expansion: PSRAM (solder pads)
• Display type: IPS
• Display size: 4"
• Resolution: 480 × 480 px
• Color depth: 65K
• Viewing angles: up to 160°
• Touch panel: capacitive, 5-point
• Touch interface: I2C (with interrupts)
• IMU: 6-axis (accelerometer + gyroscope)
• RTC: PCF85063
• Card slot: TF (microSD)
• Interfaces: CAN, RS485, I2C
• USB: USB 1.1 device/host
• USB connector: USB Type-C
• Power supply: 7–36 V DC or 3.7 V Li-Ion battery
• Programming: USB mass storage (drag-and-drop)
• PIO: 12 programmable state machines

Kit includes

• Waveshare RP2350-Touch-LCD-4 development board
• 3.5 mm 10-pin screw terminal block (rear wiring)
• 3.5 mm 10-pin screw terminal block (bottom wiring)