4" IPS Display Development Board 480×480 - Waveshare 32701

Description

The Waveshare RP2350-LCD-4 is a high-performance, highly integrated development board designed for building devices with graphical user interfaces. It is based on the RP2350B microcontroller designed by Raspberry Pi, featuring a unique dual-core design with selectable architecture: dual ARM Cortex-M33 or dual Hazard3 RISC-V cores. The MCU operates at up to 150 MHz and includes 520 kB SRAM and 16 MB 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 offering wide viewing angles of up to 160°. The RP2350-LCD-4 version does not include a touch panel, making it suitable for applications that rely on physical buttons, encoders, or external input controllers.

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

Thanks to two wiring options—bottom wiring or rear wiring—the board can be easily integrated into enclosures, control cabinets, or DIN rail mounted systems.

                                                                                                                                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 via solder pads
• Display type: IPS
• Display size: 4"
• Resolution: 480 × 480 px
• Color depth: 65K colors
• Viewing angles: up to 160°
• Touch panel: none
• IMU: 6-axis (accelerometer + gyroscope)
• RTC: PCF85063
• Card slot: TF (microSD)
• Communication interfaces: CAN, RS485, I2C
• CAN controller: XL2515QF20
• CAN transceiver: SIT65HVD230DR
• RS485 transceiver: SP3485
• USB: USB 1.1 device/host
• USB connector: USB Type-C
• Power supply: 7–36 V DC or 3.7 V Li-Ion battery
• Battery connector: MX1.25 2-pin
• Battery charging support: yes
• Programming method: USB mass storage (drag-and-drop)
• PIO: 12 programmable state machines
• Temperature sensor: built-in
• Buttons: RESET, BOOT
• Indicators: power LED

Kit includes

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