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CFA631-TMF-KU3

CFA-631 USB LCD 20x2 +Keypad, RoHS Compliant, White Edge LED Backlight, STN Negative, Blue, Transmissive 0°C - +50°C 12:00

  • The only 20x2 USB LCD with keypad designed to fit in a PC's 3.5" floppy disk drive bay.
  • USB interface (115200 baud throughput)
  • LED backlit negative mode STN 20x2 LCD
  • Integrated LED backlit 4-button translucent silicon keypad
  • "key legends" allows user assignment of soft keys to be shown easily on the LCD
  • LCD characters are contiguous in both X and Y directions to allow the host software to display "gapless" bar graphs in horizontal or vertical directions
  • Fully decoded keypad: any key combination is valid and unique
  • Robust packet-based communications protocol with 16-bit CRC
  • Built-in re-programmable microcontroller (factory operation)
  • Non-volatile memory capability ("EEPROM"):
    • Customize the "power-on" display settings
    • 16-byte "scratch" register for storing IP, netmask, system serial number
  • Expandable firmware and configurable hardware that can be customized to add specific features for your system needs:
    • Hardware or software watchdog can provide system reset
    • Other analog or digital I/O
    • Provide "dongle" functionality for software copy protection
    • Autonomous hardware monitoring
    • Fan control and monitoring, temperature monitoring
    (Tooling fee may apply for custom firmware and hardware)
  • Available in a LCD drive bay kit
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Physical Characteristics

Dimensions in this table are for reference only. For design purposes, use the module outline drawing in the datasheet.
Characters x Lines 20 x 2
Module Overall
width height depth
millimeters 101.6 25.4 93.1
inches 4 1 3.67
PCB Outline
width height depth
millimeters 101.6 25.4 93.1
inches 4 1 3.67
Other Features Affecting Size
  • Keypad
Please see the datasheet
Viewing Area
width height
millimeters 66 13.8
inches 2.6 0.54
Active Area
width height
millimeters 63.55 10.35
inches 2.5 0.41
Character Size
width height
millimeters 2.6 4.5
inches 0.1 0.18
Character Pitch
width height
millimeters 3.18 5.2
inches 0.13 0.2
Dot Size
width height
millimeters 0.48 0.6
inches 0.02 0.02
Dot Pitch
width height
millimeters 0.53 0.65
inches 0.02 0.03
Weight 80g
Keystroke Travel 2mm

Optical Characteristics

Display Technology LCD
Display Addressing passive
Glass Type/Glass Color STN/Blue
Polarizer Transmissive
View Direction 12:00
Backlight Color White
Backlight Type LED
Mode Negative
Foreground Color White
Background Color Blue

Environmental

Operating Temperatures
min max
Celsius 0° 50°
Farenheit 32° 122°
Storage Temperatures
min max
Celsius -10° 60°
Farenheit 14° 140°
Humidity
min max
Non-condensing 0% 90%

Electronics

Interface USB

Datasheets

Current Version

CFA631-TMF-KU_v2.0a.pdf (2MB)
Datasheet: rev 2.0a, Hardware: v2.0, Firmware: v2.0

Previous Versions (obsolete)

Other Files

Block Diagram (13KB)
1 to 1 Template (36KB)

Part Change Notices

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Quick View: Scale Drawing, Metric
For reference only. For design purposes, please use the drawing in the Datasheet.
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Front, Backlight On Misc Misc Back View

Front, Backlight On

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