3.5″ Intelligent TFT-LCD Module with DIABLO16 Graphics Controller

The uLCD-35DT is a 3.5″, 480×320 high resolution Intelligent Display Module powered by the 4D Systems DIABLO16 Graphics Processor, and featuring a Resistive Touch display, on-board Audio Amplifier and a microSD card socket.

Driving the display and peripherals is the DIABLO16 processor, a very capable and powerful chip which enables stand-alone functionality, programmed using the 4D Systems Workshop 4 IDE Software. The Workshop IDE enables graphic solutions to be constructed rapidly and with ease due to its design being solely for 4D graphics processors.

The display module has an array of features including Touch Detection, micro-SD memory storage, general purpose I/O including Analog Inputs, PWM, multiple TTL Serial, I2C and SPI channels and multiple millisecond resolution timers, amongst many more features.

Anything that has been designed in the past to run on a PICASO Processor can theoretically run on this DIABLO16 Module with minor changes. Please ensure you contact the 4D Systems support team if unsure if upgrading from a PICASO product and wanting to design with or change over to this uLCD-35DT Module.

Customisations to the module are possible by way of Wire-Loom connectors (shown at the bottom of the PCB) and alternate micro-SD connector, both subject to MOQ. Please refer to the Datasheet and contact the 4D Systems Sales Department.

Information about the display module

  • Powerful 3.5″ Intelligent LCD-TFT display module powered by DIABLO16
  • 480×320 HVGA Resolution, RGB 65K true to life colours, TFT Screen with integrated 4-wire Resistive Touch Panel
  • Easy 5 pin interface to any TTL Serial Host: VCC, TX, RX, GND, RESET
  • 6 banks of 32750 bytes of Flash memory for User Application Code and Data
  • 32Kb of SRAM purely for the User
  • 16 General Purpose I/O pins for user interfacing, which include 4 configurable Analog Inputs
  • The GPIO is variously configurable for alternative functions such as:
    • 3x I2C channels available
    • 1x dedicated for SD Card and 3x configurable SPI channels available
    • 1x dedicated and 3x configurable TTL Serial comm ports available
    • Up to 6 GPIO can be used as Pin Counters
    • Up to 6 GPIO for PWM (simple and Servo)
    • Up to 10 GPIO for Pulse Output
    • Up to 14 GPIO can be configured for Quadrature Encoder Inputs (2 channels)
  • On-board micro-SD memory card connector for multimedia storage and data logging purposes. HC memory card support is also available for cards larger than 4GB. An SPI Compatible micro-SD card is required
  • Alternative micro-SD memory card connector is available on special orders
  • DOS compatible file access (FAT16 format) as well as low level access to card memory
  • Dedicated raw PWM Audio pin driven by WAV files from micro-SD card
  • Display full colour images, animations, icons and video clips on chosen 4D Systems display
  • Supports all available Windows fonts
  • 4.0V to 5.5V range operation (single supply)
  • Module dimensions: 57 x 85.2 x 15.8mm (including corner plates)
  • Weight ~50 g.
  • Display Viewing Area: 49.7 x 77.0mm
  • 4x corner plates with 2.6mm holes for mechanical mounting
  • RoHS Compliant
  • CE Compliant

The uLCD-35DT includes the following items:

  • uLCD-35DT Intelligent TFT-LCD Module
  • 150mm 5 way Female-Female jumper cable
  • 5 way Male-Male adaptor
  • Getting Started Manual available as a Download

If you are a first time user and just beginning your development, we strongly recommend purchasing a Starter Kit of this same model as it includes additional items that allow you to get started with your development immediately.

Starter Kit part number is SK-35DT.


Diagonal Display Size INCHES





~216 cd/m2

Backlight LEDs






Operating Ambient Temperature

'-20°C to +70°C

Storage Temperature

'-30°C to +80°C


5 pin Interface

Display Viewing Area (mm)

73.4 x 49.0

Module Dimensions (mm)

56.90 x 97.60 x 15.80



Country of origin


CCCN / tarif code


ECCN export control code






Package Dimensions L x W x H (mm)

125 x 105 x 41

Product Weight (g)


Weight with Packaging (g)




CE Mark