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WSAL19907 – Pico-ResTouch-LCD-3.5/en

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Documentation notice: This technical documentation was independently rewritten from an archived supplier source. Check technical details and commands against the product version and manufacturer documentation before use.

Summary

Concise technical guide for the 3.5-inch touch display module for Raspberry Pi Pico (65K colors, 480×320, SPI).

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Technical overview

  • Resolution 480 × 320 pixels, IPS panel, 65K color depth.
  • Display size 73.44 × 48.96 mm; module dimensions 86.00 × 57.20 mm.
  • Display driver ILI9488 with parallel-to-serial conversion over SPI; tested maximum SPI speed 60 MHz.
  • Touch controller XPT2046 with a dedicated controller for smoother touch detection.
  • Onboard micro SD card slot for storing and directly displaying images; recommended SD format FAT, supported sizes 8 GB and 16 GB.
  • Operating voltage 5 V; maximum power consumption 5 V / 180 mA.
  • Panel brightness: 270 cd/m².
  • Included demos in C/C++ (Arduino, VSCode/CMake) and MicroPython (Thonny); demo shows strings, figures, images and touchpad functionality.
  • GUI functions such as GUI_DrawPoint, GUI_DrawLine, GUI_DrawRectangle and GUI_DrawCircle are available in LCD_GUI.c.

Notes and version constraints

  • The MicroPython demo is not compatible with the Pico W because its firmware-limited memory leaves no room for this module.
  • To display BMP images via the SD card, image files must be placed in the root directory of a FAT-formatted micro SD card; image resolution must be 480 × 320 (24-bit BMP).
  • The Arduino demo uses the TFT_eSPI library; replace Setup60_RP2040_ILI9341.h and User_Setup_Select.h from the Arduino/ResTouch-LCD-3.5 folder.
  • Before testing SD card display: insert the SD card, copy images, then run the example.
  • Exact commands or scripts are not fully specified in the source; if uncertain, please contact the manufacturer.

Source and revision record

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