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:
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.
Minor PCB revision to accommodate longer life MLCC capacitors. Hardware and firmware updating to v2.4.
Last revision:
Hardware v2.3, Firmware v2.3
Description:
In a continuation of product improvement the CFA634 series has the following improvements:
PCB changes to accomodate MLCC capacitors. This hardware revision to v2.4 impacts C7, C3, and C4.
The firmware will be updated to v2.4 to reflect the new hardware version. No other changes to the firmware are being made.
Minor PCB revision to v2.4 to accommodate longer life MLCC capacitors. Firmware will be updated to v2.4 reflect hardware version.
Reason:
Manufacturing improvements allow for building the CFA634 series with MLCC capacitors. The MLCC have a longer life than the electrolytic capacitors currently being used.
Impact:
The new version is designed to be Fit, Form, and Function compatible with previous versions of the CFA634 series.
Please see the v2.3 PCN for physical differences from older versions:
Engineering samples should be available by the end of Quarter 1, 2011. Please send an email to support@crystalfontz.com to work with our engineering and support team to assist you with the migration.
Update CFA634 series to firmware v2.3 and wide temperature LCD.
Last revision:
Hardware v2.3, Firmware v2.0
Description:
In a continuation of product improvement the CFA634 series has the following improvements:
Wide temperature support with -20°C to +70°C operation / -30°C to +80°C storage
The bezel changed from black painted metal to stainless steel. Stainless steel has lower environmental impact and improves ESD protection. If your design has the bezel exposed, it will show the silver color of the stainless steel rather than the previous painted black bezel.
The previous CFA634-YMC-KS and CFA634-YMC-KU (new CFA634-YDI-KS and CFA634-YDI-KU) changed from STN to double negative (FFSTN) LCD for improved appearance.
Firmware revision to match hardware revision and is now displayed on the boot screen
Reason:
Improvements in design allow for better manufacturing, ESD protection, and appearance.
Impact:
The new version is designed to be Fit, Form, and Function compatible with previous versions of the CFA634 series. Semi-Custom and Defined Parts will have updated part numbers.
Recommendation:
Engineering samples should be available by the end of Quarter 1, 2011. Please send an email to support@crystalfontz.com to work with our engineering and support team to assist you with the migration.
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