ESP32-P4 3.4" Round Touch Display Dev Board (800x800)

This Waveshare display development board is built around the ESP32-P4, with a dual-core plus single-core RISC-V setup. It has a 3.4" round IPS touch display with an 800×800 resolution, and is aimed at embedded projects that need strong human-machine interface support, edge computing capability and plenty of IO.

The display is a 3.4" round IPS toughened glass panel with 10-point touch, 170° viewing angles and 300cd/m² brightness.

The board uses a RISC-V 32-bit dual-core high-performance (HP) system with DSP, instruction set expansion, an FPU and speeds up to 360MHz, alongside a RISC-V 32-bit single-core low-power (LP) system running at up to 40MHz. It also includes an ESP32-C6 co-processor, adding Wi-Fi 6, Bluetooth 5 and related functions over SDIO.

Memory includes 128 KB HP ROM, 16 KB LP ROM, 768 KB HP L2 memory, 32 KB LP SRAM, 8 KB system TCM (Tightly Coupled Memory), 32 MB PSRAM stacked in the package, and 32MB Nor Flash connected over QSPI.

The board features a USB-A USB 2.0 OTG interface, SDIO3.0 MicroSD card slot, USB-C UART flashing port, 40-pin GPIO expansion interface (compatible with some Raspberry Pi HATs). It also has an onboard speaker interface and dual microphones, supported by a codec and power amplifier. An RTC chip and RTC battery header (compatible with the RTC Battery for Pi 5), provides real-time clock functions.

There is an onboard MIPI-CSI high-definition camera interface with support for full HD 1080P image capture and encoding, an integrated ISP, and H.264 and JPEG video encoding at 1080P @30fps. It also includes a MIPI-DSI high-definition display interface, integrated PPA (Pixel Processing Accelerator), 2D DMA (Direct Memory Access), and JPEG image decoding at 1080P @30fps.

The display comes with a speaker unit and 4-pin UART/I2C cable.

Features

• ESP32-P4 development board
  • Dual-core plus single-core RISC-V setup
• Display
  • 3.4" round IPS display
  • 10-point touch
  • 800 × 800 resolution
  • 170° viewing angles
  • 300cd/m² brightness
• Processing and wireless
  • RISC-V 32-bit dual-core high-performance (HP) processor
  • DSP, instruction set expansion and floating point unit (FPU)
  • Up to 360MHz main frequency
  • RISC-V 32-bit single-core low-power (LP) processor
  • Up to 40MHz main frequency
  • ESP32-C6 Wi-Fi/BT co-processor
  • Wi-Fi 6 and Bluetooth 5 over SDIO
• Memory and security
  • 128 KB HP ROM
  • 16 KB LP ROM
  • 768 KB HP L2 memory
  • 32 KB LP SRAM
  • 8 KB system TCM
  • 32 MB PSRAM stacked in the package
  • 32MB Nor Flash over QSPI
  • Digital signature peripheral
  • Dedicated key management unit
• Interfaces and audio
  • USB-A USB 2.0 OTG interface
  • SDIO3.0 MicroSD card slot
  • USB-C UART flashing port
  • 40-pin GPIO expansion interface
  • Onboard speaker interface (speaker included)
  • Microphone
  • Codec chip
  • Power amplifier chip
• Camera interface
  • MIPI-CSI high-definition camera interface
  • Full HD 1080P image capture and encoding
  • Integrated ISP
  • H.264 and JPEG video encoding at 1080P @30fps
• Display interface
  • MIPI-DSI high-definition display interface
  • Integrated PPA
  • 2D DMA
  • JPEG image decoding at 1080P @30fps

What's Onboard?

1. ESP32-P4-Core
   • Integrated ESP32-P4NRW32, 32MB Nor Flash
2. ESP32-C6-MINI-1 module
   • SDIO interface protocol, extending Wi-Fi 6 / Bluetooth 5 (LE)
3. MIPI CSI interface
   • 15-pin 1.0mm pitch connector for connecting MIPI 2-lane cameras
4. ES7210 echo cancellation chip
   • Echo cancellation algorithm chip
5. Type-C connector
   • USB 2.0 Full-Speed interface for power supply, programming and debugging
6. RTC battery header
   • For connecting a rechargeable RTC battery
   • Compatible with the RTC Battery for Raspberry Pi 5
7. USB-to-UART Type-C connector
   • For power supply, programming and debugging
8. Power LED indicator
9. USB OTG Type-A connector
   • USB OTG 2.0 High-Speed interface
10. ES8311 low-power audio codec chip
    • For audio encoding and decoding
11. Speaker header
    • PH 2.0 2P connector, supports 8Ω 2W speakers
12. Onboard microphones
    • Microphone inputs with echo cancellation
13. MIPI DSI LCD interface
    • For connecting MIPI 2-lane LCD screens
14. ESP32-C6 UART header
    • SH1.0 4-pin connector for ESP32-C6 module firmware burning
15. ESP32-P4 I2C header
    • SH1.0 4-pin connector for connecting external I2C devices
16. 40-pin GPIO header
    • 2.54mm pitch, compatible with some Raspberry Pi HATs
    • A pin header adapter is required
17. BOOT button
    • Press when powering on or resetting to enter download mode
18. MicroSD card slot
    • SDIO 3.0 interface protocol
19. RESET button

Display Specifications

Resolution	800 × 800 pixels (H×V)
Display colour gamut	70% NTSC
Contrast ratio	1200:1
Touch IC	GT9271
Communication interface	MIPI 2-lane
Brightness	300cd/m²
Outline dimensions	115.00 × 115.00 (mm)
Display area	87.60 × 87.60 (mm)
Pixel pitch	0.12075 × 0.12075 (mm)
Operation temperature	0°C ~ 60°C

Resources

Demo code, schematics, datasheets and more are available over on the product wiki:

• Product Wiki

Package Contents

• 1x ESP32-P4 3.4" Round Touch Display Dev Board (800x800)
• 1x Speaker
• 1x 4-pin UART/I2C cable