Crystalfontz 635 USB 20 x 4 + Keys + LEDs

Crystalfontz CFA635-USB LCD Display Module – 20x4 Character

High-performance 20x4 character USB LCD display, ideal for embedded systems, monitoring, and control applications. Includes integrated keypad, USB 2.0 interface, and white LED backlight.

Key Features:

• USB 2.0 interface with robust packet-based protocol and 16-bit CRC

• FSTN positive transflective LCD with white LED backlight (sunlight readable)

• Integrated 6-key translucent silicon keypad with LED backlight

• Four bi-colour LEDs (red/green) – host-controlled brightness

• Customisable power-on display, LED settings, and EEPROM memory

• Optional ATX power/reset control functionality

• Gap-less character layout supports bar graphs in X/Y directions

Dimensions & Specs:

• Overall Dimensions

  • Width: 142 mm = 5.591 in

  • Height: 37 mm = 1.457 in

  • Depth: 20.8 mm = 0.819 in

  Viewing Area

  • Width: 82.95 mm = 3.268 in

  • Height: 27.5 mm = 1.083 in

  Active Area

  • Width: 77.95 mm = 3.069 in

  • Height: 22.35 mm = 0.880 in

  Character Size

  • Width: 3.2 mm = 0.126 in

  • Height: 4.85 mm = 0.191 in

  Character Pitch

  • Width: 3.55 mm = 0.140 in

  • Height: 5.95 mm = 0.234 in

  Dot Size

  • Width: 0.6 mm = 0.024 in

  • Height: 0.65 mm = 0.026 in

  Dot Pitch

  • Width: 0.65 mm = 0.026 in

  • Height: 0.7 mm = 0.028 in

• USB CABLE 3 METRES

• Weight: 66g

• Keystroke travel: 2.4 mm

Compatible with custom PC builds, server interfaces, or industrial equipment. Tested, working, and ready to use.