480x128 USB TFT Display Module

Part Number: CFA039A0-N-VDNT

Need a bright, full-color status display for a 1U front panel? This 3.9" intelligent display puts a 500 nit, 480x128 TFT next to a backlit 6-button keypad and four RGB status LEDs, on a board just 37mm tall and 49 grams light. It shows your system's health in color while its own processor does all the work.

Building a polished dashboard doesn't mean writing a graphics library. Load your logos, icons, background images, and TrueType fonts onto a microSD card or into 16MB of on-board flash, then place each one on screen with a single command. The on-board STM32H7 handles decoding, layering, and transparency, so a finished status screen comes together in a handful of commands.

Feed it numbers and it does the rest. The scrolling line graph object, new in firmware 1v1, plots up to three live traces with auto scaling, axes, and a value readout, while progress bars and text objects show readings at a glance. Your host just sends updated values.

Your users navigate with the fully decoded keypad, each key backlit in any RGB color you choose, and the four status LEDs flag alarms without anyone reading the screen. If you're moving up from a CFA635, CFA735, or CFA835, the legacy text commands still work, so you can bring much of your existing code across and add color graphics as you go.

Behind the panel, 13 GPIOs (two with 12-bit ADC inputs), ATX power and reset control, and a hardware watchdog help manage the host itself. Add up to 32 daisy-chained CFA-FBSCAB boards to monitor temperatures and control cooling fans, then display those readings live.

Ideal Applications

• Server health and status displays
• Network appliance and firewall front panels
• NAS front panels showing capacity and drive status
• Rack thermal monitoring with automatic fan control
• Industrial process readouts for temperature, pressure, and speed
• Color upgrades for products built on CFA635, CFA735, or CFA835 modules

Key Features

• Sunlit-room friendly 500 nit, 3.9" 480x128 pixel full-color TFT
• Load images, fonts, and video from microSD or 16MB on-board flash and place them with one command
• Scrolling line graphs with up to three traces, progress bars, and anti-aliased text
• Fully decoded 6-button keypad with individual RGB backlights, plus 4 RGB status LEDs
• Legacy text commands for CFA635, CFA735, and CFA835 code
• 13 GPIOs including two 12-bit ADC inputs
• ATX power and reset control with hardware watchdog
• USB, UART, I2C, and SPI interfaces with a CRC-protected packet protocol
• Single 2.5V to 5.5V supply; -20°C to +70°C operating
• 152.0 x 37.0 x 20.5mm and 49 grams, fits a 1U chassis

Part Number Breakdown

• CFA - Crystalfontz America
• 039 - 3.9" diagonal dimension
• A0 - Series A, version 0
• N - Intelligent module
• V - Value add, packet based
• D - 15:4 aspect ratio
• N - No touchscreen
• T - Standard brightness

• grid_on Resolution

  Pixel Grid

  Column Dots	480 px
  Row Dots	128 px

• square_foot Physical Dimensions

  Module	Metric	Imperial
  Overall Width	152.00 mm	5.984 in
  Overall Height	37.00 mm	1.457 in
  Weight	49 g
  Shape	Rectangle

  Display Area	Metric	Imperial
  Active Area Width	95.04 mm	3.742 in
  Active Area Height	25.34 mm	0.998 in
  Viewing Width	97.04 mm	3.820 in
  Viewing Height	27.34 mm	1.076 in

  Dot Geometry	Metric	Imperial
  Dot Pitch Width	0.07 mm	0.003 in
  Dot Pitch Height	0.20 mm	0.008 in
  Dot Size Width	0.07 mm	0.003 in
  Dot Size Height	0.20 mm	0.008 in

• build Mechanical

  Connectors

  Module Connector Type

  USB

• visibility Display Optics

  Technology

  Display Technology	TFT
  Glass Type	TFT
  Polarizer	Transmissive

  Brightness

  Nits

  500 cd/m²

  Viewing

  View Angle	45°
  View Direction	12:00 o'clock

• palette Color & Appearance

  Display Colors

  Foreground Color	RGB
  Background Color	Dark

  Backlight

  Backlight Type	LED
  Backlight Color	White

• electric_bolt Electrical

  Display	Min	Typ	Max	Unit
  Supply Voltage - Logic
  Supply Voltage for Logic	2.5	—	5.5	V

• cable Interface

  Available Interfaces

  Standard Interface(s)

  UART/Serial, SPI, USB, I2C

• touch_app Touch

  Capability

  Touch Screen

  None

• nature Environmental

  Temperature

  	Min (°C)	Max (°C)	Min (°F)	Max (°F)
  Operating Temperature	-20°C	70°C	-4°F	158°F
  Storage Temperature	-30°C	80°C	-22°F	176°F

• download Downloads
  Datasheets
  

  picture_as_pdf

  CFA039A0-N-VDxT Datasheet
  

  
  

  
  Documents & Files
  

  folder_zip Hardware Design - 3D Model
  

  picture_as_pdf Other Document - Command Set Reference
  

  folder_zip Other Document - Field Upgrade Kit
  

  picture_as_pdf Other Document - Intelligent LCD Comparison
  

  link Demo Code Repository on Github
  

  
  

• Change Notices