CFA634 Serial LCD
CFA-634 Serial LCD 20x4, RoHS Compliant, No Backlight, FSTN Positive, Reflective 0°C - +50°C 6:00
CFA634-NFA-KS: Front view
CFA634-NFA-KS:
For details on user-defined characters that create a "graphic," horizontal bar graphs, and filling the screen with "big numbers," see the YFB photos.
For details on user-defined characters that create a "graphic," horizontal bar graphs, and filling the screen with "big numbers," see the YFB photos.
(click image to see detail view)
CFA-634 Serial LCD 20x4, RoHS Compliant, White Edge LED Backlight, FSTN Positive, Transflective 0°C - +50°C 6:00
CFA634-TFB-KS: Front, backlight on
CFA634-TFB-KS:
For details on user-defined characters that create a "graphic," horizontal bar graphs, and filling the screen with "big numbers," see the YFB photos.
For details on user-defined characters that create a "graphic," horizontal bar graphs, and filling the screen with "big numbers," see the YFB photos.
(click image to see detail view)
CFA-634 Serial LCD 20x4, RoHS Compliant, White Edge LED Backlight, STN Negative, Blue, Transmissive 0°C - +50°C 6:00
CFA634-TMC-KS: Front, backlight on
CFA634-TMC-KS:
For details on user-defined characters that create a "graphic," horizontal bar graphs, and filling the screen with "big numbers," see the YFB photos.
For details on user-defined characters that create a "graphic," horizontal bar graphs, and filling the screen with "big numbers," see the YFB photos.
(click image to see detail view)
CFA-634 Serial LCD 20x4, RoHS Compliant, Yellow/Green LED Backlight, FSTN Positive, Transflective 0°C - +50°C 6:00
CFA634-YFB-KS: Front, backlight on
CFA634-YFB-KS: Front view
CFA634-YFB-KS:
This is the version screen of an LED backlit display that is shown for a short time when power is applied. It also demonstrates the use of the 8 user-defined characters tiled to make a small "graphic" area.
This is the version screen of an LED backlit display that is shown for a short time when power is applied. It also demonstrates the use of the 8 user-defined characters tiled to make a small "graphic" area.
(click image to see detail view)
CFA634-YFB-KS:
Up to four horizontal bar graphs can be displayed. The bar graphs do not have the unsightly "gaps" caused by the character cells typical of most character displays. The command is very simple to use. You supply the row, start and end columns, a pattern, and the length of the bar in pixels. Positive lengths graph from left to right, negative lengths graph from right to left. No "setup" comand is necessary. Other text or bar graphs may be on the same line, only the columns used by the bar graph are changed.
Up to four horizontal bar graphs can be displayed. The bar graphs do not have the unsightly "gaps" caused by the character cells typical of most character displays. The command is very simple to use. You supply the row, start and end columns, a pattern, and the length of the bar in pixels. Positive lengths graph from left to right, negative lengths graph from right to left. No "setup" comand is necessary. Other text or bar graphs may be on the same line, only the columns used by the bar graph are changed.
(click image to see detail view)
CFA634-YFB-KS:
This screen shows the 3x4 "Big Numbers" function. Up to 5 digits may be displayed. The command to place a digit simply takes the left-most column of the digit and a number between 0 and 9. The entire 3x4 digit area is replaced with the new digit, no clearing is necessary. No "setup" command is necessary.
This screen shows the 3x4 "Big Numbers" function. Up to 5 digits may be displayed. The command to place a digit simply takes the left-most column of the digit and a number between 0 and 9. The entire 3x4 digit area is replaced with the new digit, no clearing is necessary. No "setup" command is necessary.
(click image to see detail view)
CFA634-YFB-KS:
This screen shows the 4x4 "Big Numbers" function. Up to 4 digits may be displayed. The command to place a digit simply takes the left-most column of the digit and a number between 0 and 9. The entire 4x4 digit area is replaced with the new digit, no clearing is necessary. No "setup" command is necessary.
This screen shows the 4x4 "Big Numbers" function. Up to 4 digits may be displayed. The command to place a digit simply takes the left-most column of the digit and a number between 0 and 9. The entire 4x4 digit area is replaced with the new digit, no clearing is necessary. No "setup" command is necessary.
(click image to see detail view)
CFA-634 Serial LCD 20x4, RoHS Compliant, Yellow/Green LED Backlight, STN Negative, Blue, Transmissive 0°C - +50°C 6:00
CFA634-YMC-KS: Front, backlight on
CFA634-YMC-KS:
For details on user-defined characters that create a "graphic," horizontal bar graphs, and filling the screen with "big numbers," see the YFB photos.
For details on user-defined characters that create a "graphic," horizontal bar graphs, and filling the screen with "big numbers," see the YFB photos.
(click image to see detail view)
Back view
Features:
New in v2.0:
This display is the "v2.0" version of our serial display series. This version is generally command and mechanically compatible with our earlier 1.x series displays, while adding many improvements:
- The LCD material is now FSTN (Film compensated Super Twisted Nematic) instead of STN. FSTN gives better contrast, faster response and makes an all-around more readable display.
- The display now has the ability to store a customized boot screen of your design in its EEPROM. All features of the display are controlled: characters displayed, user-definable characters, backlight setting, contrast setting, cursor position, cursor style, "wrap" setting, "scroll" setting, and even the scrolling marquee.
- The baud rates supported are now 19200, 9600, 4800 and 2400 baud. 1200 baud is no longer supported.
- The PCB silkscreen has an abbreviated jumper setting table, so all the jumper settings are always in easy reference.
- The CGROM is an enhanced version with many more useful characters: numeric superscripts, icons, mathematical symbols, some fractions, a great variety of arrows, many currency symbols, and more.
- The processor’s reset circuit has been improved to handle a wider range of slow-turn-on power supply conditions.
Other Features:
- Available with 634 PC Mounting Bracket
- DB9 connector provided for simple RS-232 hookup
- Large, easy to read characters: 7.3mm (0.287") character height
- Available with bright, even, software adjustable LED backlighting or in a low-power reflective model
- Software controlled contrast
- "Gapless" horizontal bargraphs
- Software controlled terminal style automatic scrolling and line wrapping
- Unique "Scrolling Marquee" feature continuously scrolls a message across the display without host intervention.
- Low speed "SPI" (Fclk max=18KHz) and "Inverted TTL" RS-232 for embedded applications
- Buffered communication
- Single board construction--no connectors to fail
- Large display area in a compact 108mm x 43mm (4.25" x 1.69")package
- Thin:
- Reflective is 15.9mm (0.626") including DB-9 connector
- LED Backlit is 19.9mm (0.783") including DB-9 connector
- Negative voltage for contrast generated on board
- Extended voltage (9-15v) and 5v power inputs standard on all modules for the controller. Backlight is 5v only.
- Low power: Non-backlight operation will self-power from the DTR and RTS lines of most serial ports.
(View archive page for 634 v1.x series displays.)
Also see our downloadable free software
Dimensions:
- PCB Width: 130mm
- PCB Height: 63mm
- Viewing Width: 102mm
- Viewing Height: 41.5mm
- Active Area Width: 93.54mm
- Active Area Height: 34mm
- Character Width: 3.84mm
- Character Height: 6.38mm
- PCB Depth: 19.9mm
- Dot Pitch Width: 0.78mm
- Dot Pitch Height: 0.92mm
- Dot Size Width: 0.72mm
- Dot Size Height: 0.86mm
- Character Pitch Width: 4.68mm
- Character Pitch Height: 8.9mm
- Characters: 20
- Lines: 4
- Overall Width: 130mm
- Overall Height: 63mm
- Overall Depth: 19.9mm
Documents:
1 to 1 Template (33KB)Scale Drawing, Metric (39KB)
Scale Drawing, Inches (39KB)
Character Generator ROM (389KB)
Datasheets
