front view

CFA635-TFE-KU3

CFA-635 USB LCD 20x4 +Keypad, White Edge LED Backlight, FSTN Positive, Transflective 0°C - +50°C 12:00

  • LED backlit STN 20x4 LCD
  • Integrated LED backlit 6-button translucent silicon keypad with screened legend
  • Four bi-color (red + green) LEDs. The LEDs’ brightness can controlled by the host software, which allows mixing the LEDs to produce other colors (yellow and orange)
  • Two color options:
    • Yellow-green backlit positive mode LCD, yellow/green keypad backlight ("YYE")
    • White backlit negative mode LCD, blue keypad backlight ("TMF")
  • Fully decoded keypad: any key combination is valid and unique
  • 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
  • USB interface for both power and data (115200 baud equivalent throughput)
  • Robust packet based communications protocol with 16-bit CRC
  • Compact size: fits in a 1U rack mount case (37mm overall height)
  • ATX power supply control functionality allows the buttons on the CFA-635 to replace the "power" and "reset" buttons on your system, simplifying your front panel design
  • Built-in factory re-programmable microcontroller
  • 5.25" half-height drive-bay mounting bracket available (optional)
  • Non-volatile memory capability ("EEPROM"):
    • Customize the "power-on" display and LED settings
    • 16-byte "scratch" register for storing IP, netmask, system serial number . . .
  • Available in a 5.25" half-height LCD drive bay kit, (see mounting bracket photos)
Lose the tabs, show me everything
For reference only. For design purposes, please use the specifications in the datasheet.

Physical Characteristics

Characters x Lines 20 x 4
Module Overall
width height depth
millimeters 142 37 10.6
inches 5.59 1.46 0.42
PCB Outline
width height depth
millimeters 142 37 10.6
inches 5.59 1.46 0.42
Other Features Affecting Size
  • Keypad
Please see the datasheet
Viewing Area
width height
millimeters 82.95 27.5
inches 3.27 1.08
Active Area
width height
millimeters 77.95 22.35
inches 3.07 0.88
Character Size
width height
millimeters 3.2 4.85
inches 0.13 0.19
Character Pitch
width height
millimeters 3.9 5.6
inches 0.15 0.22
Dot Size
width height
millimeters 0.6 0.65
inches 0.02 0.03
Dot Pitch
width height
millimeters 0.65 0.7
inches 0.03 0.03
Keystroke Travel 2.4mm

Optical Characteristics

Display Technology LCD
Display Addressing passive
Glass Type/Glass Color FSTN/Light-Gray
Polarizer Transflective
View Direction 12:00
Backlight Color White
Backlight Type LED
Mode Positive
Foreground Color Dark
Background Color White

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

CFA635TFEKU_v1.4c.pdf (2MB)
Datasheet: rev 1.4c, Hardware: v1.0, Firmware: v1.4

Previous Versions (obsolete)

Other Files

1 to 1 Template - CFA635-KU3_1_TO_1.PDF (43KB)
CAD Export - CFA635-KU3_2D_CAD (139KB)

Part Change Notices

Subscribe to Part Change Notices for CFA635-TFE-KU3 by Email Email subscription for changes to CFA635-TFE-KU3 or by RSS feed RSS feed for changes to CFA635-TFE-KU3
No notices have been issued for this part.
For reference only. For design purposes, please use the drawing in the datasheet.
Quick View: Scale Drawing, Metric Scale Drawing, Inches
Zoom out zoom bar Zoom in Zoom to fit Zoom help

Move Drag image to move

Wheel zoom Use the mouse wheel to zoom

Zoom out Zoom out

Zoom in Zoom in

Zoom to fit Fit image to window

Front, Backlight On Back View

Front, Backlight On

Zoom out zoom bar Zoom in Zoom to fit Save Zoom help

Move Drag image to move

Wheel zoom Use the mouse wheel to zoom

Zoom out Zoom out

Zoom in Zoom in

Zoom to fit Fit image to window

Save Save full image to disk