CFA631-TMF-KU

CFA631 USB LCD 20x2 +Keypad, RoHS Compliant, White Edge LED Backlight, STN Negative Blue, Transmissive, 0°C to +50°C, 12:00 viewing angle

General
Tech Specs
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CFA631 USB Family

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
Available in a LCD drive bay kit

For reference only. For design purposes, please use the specifications in the datasheet.

Physical Characteristics

Characters x Lines

20 x 2

Module Overall
	width	height	depth
millimeters	101.6	25.4	93.1
inches	4.0	1.0	3.6

PCB Outline
	width	height	depth
millimeters	101.6	25.4	93.1
inches	4.0	1.0	3.6

Other Features Affecting Size
Keypad Please see the datasheet

Viewing Area
	width	height
millimeters	66	13.8
inches	2	0.5

Active Area
	width	height
millimeters	63.55	10.35
inches	2.50	0.40

Character Size
	width	height
millimeters	2.6	4.5
inches	0.1	0.1

Character Pitch
	width	height
millimeters	3.18	5.2
inches	0.12	0.2

Dot Size
	width	height
millimeters	0.48	0.6
inches	0.01	0.0

Dot Pitch
	width	height
millimeters	0.53	0.65
inches	0.02	0.02

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

CFA631-TMF-KU_v2.0a.pdf (3MB, Mar 2010, Datasheet v.2.0a, Hardware v.2.0, Firmware v.2.0)

Obsolete Datasheets

CFA_631_v2.0.pdf (1MB, Aug 2005, Datasheet v.2.0, Hardware v.2.0, Firmware v.2.0)
CFA_631_v1.0.pdf (654KB, Dec 2003, Datasheet v.1.0, Hardware v.1.0, Firmware v.1.0)