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Home » Products » TFT LCD Displays

Dark 20x4 Character USB LCD Module

Part Number: CFA634-YDI-KU

USB 20x4 character LCD module, RoHS / REACH compliant, Yellow-Green LED Backlight, FFSTN Negative (black), Transmissive, -20°C to +70°C operation, 6:00 viewing angle.

Large easy-to-read LCD in a compact size can display 20 characters x 4 lines. Overall module size is 130.00 mm, width x 63.00 mm height x 19.90 mm depth (5.12" x 2.48" x 0.78"). Character height is 7.30 mm (0.29").

  • Attractive stainless steel bezel.
  • Optional PC CDROM mounting bracket with overlay to fit two 5.25" wide bays is available.
  • The CFA634 can use any of SIX interfaces on any modules in the family by simply changing the interface selection using a command setting and making the appropriate jumper configurations.
  • Adjustable contrast. The module’s default contrast value will be acceptable for many applications. If necessary, you can adjust the contrast by using control function.
  • Extended voltage (9-15 volts for interfaces using DB9 connector) and 5 volts power inputs standard for the controller.
  • Backlight is 5 volts only.
  • Use the nonvolatile memory capability (EEPROM) to customize the “power-on” display settings.
Not sure which display module to choose? Compare all of our intelligent display modules.

Currently Shipping: HW Version 3.2, Firmware Version: 3.3.1




Add to cart without customizations
Need a written quote? Add to cart, then enter your email address in the "request a quote" box.
Price:
Prices without customizations:
Quantity Unit Price
1 $79.60
10 $65.78
20 $63.43
50 $61.09
100 $60.15
200 $59.67
500 * $59.20
1000 * $58.27
213 Units In-Stock & Ready To Ship
Pricing is subject to change.
* Contact us about potential lead times.
Other components worth considering
4810 USB-C to 4 pin 2mm header
Add a USB-C Cable? $5.30 ea.

Part Change Notices

Subscribe to Part Change Notices by email Email subscription for changes to CFA634-YDI-KU or RSS RSS feed for changes to CFA634-YDI-KU
  • text_snippet
    Part Change Notice #11226: Change to ENIG from Gold Plating
    Products Affected: CFA631-RMF-KU1, CFA631-RMF-KU2, CFA631-RMF-KU, CFA631-TMF-KU, CFA632-YFH-KS, CFA632-YDI-KS, CFA632-YFH-KU, CFA632-YDI-KU, CFA634-TFH-KS, CFA634-TMI-KS, CFA634-YFH-KS, CFA634-YDI-KS, CFA634-TFH-KU, CFA634-TMI-KU, CFA634-YFH-KU, CFA634-YDI-KU, CFA631-RMF-KU32, CFA631-RMF-KU128, CFA631-RMF-KU160, CFA631-RMF-KU33, CFA631-RMF-KU129, CFA631-RMF-KU161, CFA631-RMF-KU-162, CFA632-YDI-KL, CFA632-YDI-KN, CFA632-YDI-KC, CFA632-YDI-KP, CFA632-YFH-KL, CFA632-YFH-KN, CFA632-YFH-KC, CFA632-YFH-KP, CFA634-YDI-KC, CFA634-TMI-KC, CFA634-YFH-KC, CFA634-TFH-KC, CFA634-YFH-KL, CFA634-TFH-KL, CFA634-TMI-KL, CFA634-YDI-KL, CFA634-TFH-KP, CFA634-YFH-KP, CFA634-TMI-KP, CFA634-YDI-KP, CFA634-TFH-KN, CFA634-YFH-KN, CFA634-TMI-KN, CFA634-YDI-KN, CFA631P-TMF-KU, DBBK-CFA631-RMF-KU1, DBBK-CFA631-RMF-KU2, DBBK-CFA631-RMF-KU32, DBBK-CFA631-RMF-KU33, DBBK-CFA631-RMF-KU34, DBBK-CFA631-RMF-KU128, DBBK-CFA631-RMF-KU129, DBBK-CFA631-RMF-KU130, DBBK-CFA631-RMF-KU160, DBBK-CFA631-RMF-KU161, DBBK-CFA631-RMF-KU162
    Date Issued: September 5, 2023
    Summary: Change to ENIG from Gold Plating
    Description: The plating on these PCBs is changing from gold plating to ENIG.
    Reason: Gold plating is not as often used anymore and ENIG is a better plating process.
    Availability: This will be implemented on serial numbers with a SN date more recent than week 21 of 2023 with one exception: SNs 2321634TFHP544035 - 2321634TFHP544219 on a CFA634-TFH product will have the original gold plating. Contact Crystalfontz Support for up-to-date information by emailing support@crystalfontz.com.
  • text_snippet
    Part Change Notice #11204: CFA634 Update to PCN11149
    Products Affected: CFA634-TFH-KS, CFA634-TMI-KS, CFA634-YFH-KS, CFA634-YDI-KS, CFA634-TFH-KU, CFA634-TMI-KU, CFA634-YFH-KU, CFA634-YDI-KU, CFA634-YDI-KC, CFA634-TMI-KC, CFA634-YFH-KC, CFA634-TFH-KC, CFA634-YFH-KL, CFA634-TFH-KL, CFA634-TMI-KL, CFA634-YDI-KL, CFA634-TFH-KP, CFA634-YFH-KP, CFA634-TMI-KP, CFA634-YDI-KP, CFA634-TFH-KN, CFA634-YFH-KN, CFA634-TMI-KN, CFA634-YDI-KN
    Date Issued: June 19, 2023
    Summary: CFA634 Update to PCN11149
    Description: Update to PCN11149:
    Electrical characteristics will be different including logic voltage. The inputs will be 5V tolerant but outputs from the CFA634 display modules will be 3.3V. For detailed changes, we will be releasing the updated datasheets on the relevant product pages. Contact support@crystalfontz.com if you would like to be notified when the updated datasheet is released.

    Original notice:
    The CFA634 family is having a hardware revision that utilizes a new processor and has other improvements that include: an independent voltage source so that the contrast is not affected by the input voltage, an interface select button, and will now support packet-based communication. The firmware has also been updated with additional features.

    JPBL will be closed by default which will enable the backlight to be powered from USB.

    Please refer to the datasheet for more information about the new hardware and firmware functions.
    Reason: Continuous improvement for this family of products.
    Availability: Contact Crystalfontz Support for up-to-date information by emailing support@crystalfontz.com.

    Contact Crystalfontz Sales to order samples of the new revision by emailing sales@crystalfontz.com.
  • text_snippet
    Part Change Notice #11149: New Hardware Revision
    Products Affected: CFA634-TFH-KS, CFA634-TMI-KS, CFA634-YFH-KS, CFA634-YDI-KS, CFA634-TFH-KU, CFA634-TMI-KU, CFA634-YFH-KU, CFA634-YDI-KU, CFA634-YDI-KC, CFA634-TMI-KC, CFA634-YFH-KC, CFA634-TFH-KC, CFA634-YFH-KL, CFA634-TFH-KL, CFA634-TMI-KL, CFA634-YDI-KL, CFA634-TFH-KP, CFA634-YFH-KP, CFA634-TMI-KP, CFA634-YDI-KP, CFA634-TFH-KN, CFA634-YFH-KN, CFA634-TMI-KN, CFA634-YDI-KN
    Date Issued: August 26, 2022
    Summary: New Hardware Revision
    Description: The CFA634 family is having a hardware revision that utilizes a new processor and has other improvements that include: an independent voltage source so that the contrast is not affected by the input voltage, an interface select button, and will now support packet-based communication. The firmware has also been updated with additional features.

    JPBL will be closed by default which will enable the backlight to be powered from USB.

    Please refer to the datasheet for more information about the new hardware and firmware functions.
    Reason: Continuous improvement for this family of products.
    Availability: Contact Crystalfontz Support for up-to-date information by emailing support@crystalfontz.com.

    Contact Crystalfontz Sales to order samples of the new revision by emailing sales@crystalfontz.com.
  • text_snippet
    Part Change Notice #10658: Deprecation of "Drive Bay Kit Configurator" / New part numbers for drive bay kits.
    Products Affected: CFA631-RMF-KU1, CFA631-RMF-KU2, CFA631-RMF-KU, CFA633-YYB-KS, CFA633-TMC-KS, CFA633-RMC-KS, CFA633-YYB-KU, CFA633-TMC-KU, CFA633-RMC-KU, CFA635-YYE-KS, CFA635-TMF-KS, CFA635-TFE-KS, CFA635-TMF-KL, CFA635-TFE-KL, CFA631-TMF-KU, CFA635-TFE-KU, CFA635-YYE-KL, CFA635-TMF-KU, CFA635-YYE-KU, DS635-AL, DS635-BG, DS635-BK, DS635-AK, CFA533-YYH-KS, CFA533-YYH-KU, CFA533-TMI-KS, CFA533-TMI-KU, CFA533-YYH-KL, CFA533-TMI-KL, CFA533-YYH-KC, CFA533-TMI-KC, CFA533-YYH-KI, CFA633-YYH-KS, CFA633-TMI-KS, CFA633-YYH-KU, CFA633-TMI-KU, CFA632-YFH-KS, CFA632-YDI-KS, CFA632-YFH-KU, CFA632-YDI-KU, CFA634-TFH-KS, CFA634-TMI-KS, CFA634-YFH-KS, CFA634-YDI-KS, CFA634-TFH-KU, CFA634-TMI-KU, CFA634-YFH-KU, CFA634-YDI-KU, CFA633-RDI-KU, CFA633-RDI-KS, CFA533-TFH-KU, CFA533-TFH-KS, CFA633-TFH-KU, CFA633-TFH-KS, CFA533-TFH-KL, CFA533-TFH-KC, CFA735-TFK-KR, CFA735-TFK-KT, CFA735-TML-KR, CFA735-TML-KT, CFA735-YYK-KR, CFA735-YYK-KT, CFA631-RMF-KU32, CFA631-RMF-KU128, CFA631-RMF-KU160, CFA631-RMF-KU33, CFA631-RMF-KU129, CFA631-RMF-KU161, CFA631-RMF-KU-162, CFA632-YDI-KL, CFA632-YDI-KN, CFA632-YDI-KC, CFA632-YDI-KP, CFA632-YFH-KL, CFA632-YFH-KN, CFA632-YFH-KC, CFA632-YFH-KP, CFA634-YDI-KC, CFA634-TMI-KC, CFA634-YFH-KC, CFA634-TFH-KC, CFA634-YFH-KL, CFA634-TFH-KL, CFA634-TMI-KL, CFA634-YDI-KL, CFA634-TFH-KP, CFA634-YFH-KP, CFA634-TMI-KP, CFA634-YDI-KP, CFA634-TFH-KN, CFA634-YFH-KN, CFA634-TMI-KN, CFA634-YDI-KN, CFA631P-TMF-KU
    Date Issued: July 1, 2015
    Summary: Deprecation of "Drive Bay Kit Configurator" / New part numbers for drive bay kits.
    Description: Starting August 1, 2015 the "Drive Bay Kit Configurator" located at https://www.crystalfontz.com/products/select_kit.html will no longer be functional for ordering one of our Serial or USB displays (CFA533, CFA631, CFA632, CFA633, CFA634, CFA635, and CFA735) in a bracket or SLED. This functionality is being moved to the Customize and Add to Cart process when checking out. This will allow for further customization by our customers to better fit their needs.

    This change will eliminate the current "kits", but will add options not previously available such as pre-configured ATX functionality, and ALL the currently available interfaces will be orderable in a drive bay bracket or SLED.
    The new part numbers will have the bracket / SLED and overlay type as a PREFIX to the configured part number. The choice for bracket / SLED to a display order will be via the cart options. Our CFA835 displays were introduced with these configuration options.
    To see how the new options will look, and what the new part numbers will look like, please see one of our CFA835 parts:
    https://www.crystalfontz.com/cart/addtocart.php?product_id=2277&qty=1
    NOTE: The SLED is only available for the CFA635, CFA735, and CFA835 products.
    Reason: As part of our continuous improvement process, we are integrating the ordering of displays in drive bay and SLED kits as part of the display ordering process.
    Impact: Drive bay kits in their current configuration will no longer be available.
    Recommendation: Place orders prior to 2015-08-01 for upcoming production needs via our website or by contacting our logistics department via email: sales@crystalfontz.com, or by calling 1-888-206-9720 (International call +1-509-892-1200).
    After the 2015-08-01, please contact our engineering department via support@crystalfontz.com to assist you with ordering your bracket / SLED kits.
    Availability: Starting 2015-08-01, the bracket and SLED options for our serial and USB display will be part of the ordering process for the displays
    Price Change: Pricing bracket / SLED configurations will reflect manufacturing costs.
  • text_snippet
    Part Change Notice #10650: CFA634 Firmware update
    Products Affected: CFA632-YFH-KS, CFA632-YDI-KS, CFA632-YFH-KU, CFA632-YDI-KU, CFA634-TFH-KS, CFA634-TMI-KS, CFA634-YFH-KS, CFA634-YDI-KS, CFA634-TFH-KU, CFA634-TMI-KU, CFA634-YFH-KU, CFA634-YDI-KU, CFA632-YDI-KL, CFA632-YDI-KN, CFA632-YDI-KC, CFA632-YDI-KP, CFA632-YFH-KL, CFA632-YFH-KN, CFA632-YFH-KC, CFA632-YFH-KP, CFA634-YDI-KC, CFA634-TMI-KC, CFA634-YFH-KC, CFA634-TFH-KC, CFA634-YFH-KL, CFA634-TFH-KL, CFA634-TMI-KL, CFA634-YDI-KL, CFA634-TFH-KP, CFA634-YFH-KP, CFA634-TMI-KP, CFA634-YDI-KP, CFA634-TFH-KN, CFA634-YFH-KN, CFA634-TMI-KN, CFA634-YDI-KN
    Date Issued: March 25, 2015
    Summary: CFA634 Firmware update
    Last revision: 3.1
    Description: As part of our continuous improvement process, the CFA634 firmware is being revised from 3.1 to 3.2 with the following changes:

    1. Improved cursor position control when display is sent carriage return

    2. Boot screen will reflect selected interface when using the JPDFLT jumper after module reboot

    3. Access to location \002 Extended Register Removed (command \030, 0x1E, Ctrl+=)


    Updated datasheet will include details of the above changes, as well as general fixes.
    Reason: Bug fixes and usability improvements.
    Impact: Changes effect all CFA634 products. Firmware update is compatible with existing code, other than changes to command 30.
    Recommendation: Prior to implementing the new firmware into production, it is recommended that engineering samples be ordered and tested.
    Availability: Displays with new firmware will begin shipping during 2Q 2015.
    Price Change: No price change is planned for this change.
  • text_snippet
    Part Change Notice #10580: Reverted the SPI functionality to Crystalfontz CFA634 legacy implementation
    Products Affected: CFA634-YMC-KS, CFA634-NFA-KS, CFA634-TFB-KS, CFA634-TMC-KS, CFA634-YFB-KU, CFA634-YMC-KU, CFA634-NFA-KU, CFA634-TFB-KU, CFA634-TMC-KU, CFA634-NFG-KS, CFA634-TFH-KS, CFA634-TMI-KS, CFA634-YFH-KS, CFA634-YDI-KS, CFA634-NFG-KU, CFA634-TFH-KU, CFA634-YFH-KU, CFA634-YDI-KU, CFA634-YDI-KC, CFA634-TMI-KC, CFA634-YFH-KC, CFA634-TFH-KC, CFA634-YFH-KL, CFA634-TFH-KL, CFA634-TMI-KL, CFA634-TFH-KP, CFA634-YFH-KP, CFA634-TMI-KP, CFA634-YDI-KP, CFA634-TFH-KN, CFA634-YFH-KN, CFA634-TMI-KN, CFA634-YDI-KN
    Date Issued: December 20, 2013
    Summary: Reverted the SPI functionality to Crystalfontz CFA634 legacy implementation
    Last revision: v3.1.5
    Description: Reverted the SPI functionality to Crystalfontz CFA634 legacy implementation where the MISO line is used as a busy indicator instead of the module's unused transmit line. Firmware will migrate from v3.1.5 to v3.1.6.
    Reason: To maintain legacy functionality.
    Impact: Impact to customers utilizing SPI functionality only.
    Recommendation: For questions please contact Technical Service at 1-888-206-9720.
  • text_snippet
    Product Update #10494: New pricing for CFA634 family effective 2013-07-01
    Products Affected: CFA634-TFH-KS, CFA634-TMI-KS, CFA634-YFH-KS, CFA634-YDI-KS, CFA634-TFH-KU, CFA634-TMI-KU, CFA634-YFH-KU, CFA634-YDI-KU
    Date Issued: May 17, 2013
    Summary: New pricing for CFA634 family effective 2013-07-01
    Description: PCN #10454 announced the new v3.1 hardware version for CFA634 family of modules:

    https://www.crystalfontz.com/products/pcn.phtml?id=10454

    Pricing at the time of the PCN was issued was published as TBD. This update notices publishes pricing for the CFA634 family of modules effective 2013-07-01

    2013-07-01 Edit: Corrected TMI variant 200 piece pricing.
    Impact: All CFA634 based parts.
    Availability: New pricing is effective orders placed on 2013-07-01 or later.
    Price Change: - - Effective 2013-07-01 - -

    CFA634-TFH-KS and CFA634-TFH-KU

    1 + : US$55.00
    10 + : US$49.40
    20 + : US$46.60
    50 + : US$43.90
    100 + : US$41.20
    200 + : US$38.40
    500 + : US$35.70
    1000 + : US$32.90


    CFA634-TMI-KS and CFA634-TMI-KU

    1 + : US$54.00
    10 + : US$48.40
    20 + : US$45.70
    50 + : US$43.00
    100 + : US$40.30
    200 + : US$38.00
    500 + : US$35.00
    1000 + : US$32.30


    CFA634-YDI-KS and CFA634-YDI-KU

    1 + : US$56.00
    10 + : US$49.80
    20 + : US$47.00
    50 + : US$44.30
    100 + : US$41.50
    200 + : US$38.70
    500 + : US$36.00
    1000 + : US$33.20


    CFA634-YFH-KS and CFA634-YFH-KU

    1 + : US$54.00
    10 + : US$47.90
    20 + : US$45.20
    50 + : US$42.60
    100 + : US$39.90
    200 + : US$37.20
    500 + : US$34.60
    1000 + : US$31.90
  • text_snippet
    Part Change Notice #10455: New v3.1 firmware to support CFA634 hardware v3.1 family of module
    Products Affected: CFA634-TFB-KS, CFA634-TFB-KU, CFA634-NFG-KS, CFA634-TFH-KS, CFA634-TMI-KS, CFA634-YFH-KS, CFA634-YDI-KS, CFA634-NFG-KU, CFA634-TFH-KU, CFA634-TMI-KU, CFA634-YFH-KU, CFA634-YDI-KU
    Date Issued: February 6, 2013
    Summary: New v3.1 firmware to support CFA634 hardware v3.1 family of module
    Last revision: FW v2.4
    Description: As part of our continuous improvement process, the CFA634 family of modules has been redesigned to fall more in line with our other Value Add families of intelligent modules.

    The new firmware for the CFA634 family of modules will retain the same stream based command structure.

    Changes:
    Control the Boot Screen – Ctrl+I (\009)
    This command has increased functionality to include, but not limited to;
    - Interface selection
    - Baud rate
    - Data normal / inverted
    - Splash screen

    Separate USB and Serial interface builds to support the on-board USB interface design.


    With the change from Samsung S6A0073 to Rockworks RW1067, the following commands and functionality are deprecated:

    + Show inverted blinking block cursor – Ctrl+G (\007)
    + Set Scrolling Marquee Characters - Ctrl+U (\021)
    + Enable Scrolling Marquee - Ctrl+V (\022)

    * Specifications are subject to change as


    Reason: The firmware has been revised to support the hardware changes from the Samsung S6A0073 LCD controller to the Rockworks RW1067, and the Holtek HT48R30 one-time-programmable controller being replaced with the Cypress PSoC CY8C27443 for improved functionality.
    Impact: This new firmware version has changes and depreciated commands and functionality.
    Recommendation: Engineering samples should be available Quarter 3, 2013. Please send an email to support@crystalfontz.com to work with our engineering and support team to assist you with the migration.
    Availability: Q3 2013 - Samples available
    End of Q3 / Beginning Q4 2013 - Transition to new version when previous version is exhausted
    Q1 2014 - All CFA634 shipments new hardware
    Price Change: We are anticipating an increase in pricing.
    New pricing is TBD.
  • text_snippet
    Part Change Notice #10454: New v3.1 hardware version for CFA634 family of modules.
    Products Affected: CFA634-NFA-KS, CFA634-TFB-KS, CFA634-NFA-KU, CFA634-TFB-KU, CFA634-NFG-KS, CFA634-TFH-KS, CFA634-TMI-KS, CFA634-YFH-KS, CFA634-YDI-KS, CFA634-NFG-KU, CFA634-TFH-KU, CFA634-TMI-KU, CFA634-YFH-KU, CFA634-YDI-KU
    Date Issued: February 6, 2013
    Summary: New v3.1 hardware version for CFA634 family of modules.
    Last revision: HW v2.4
    Description: As part of our continuous improvement process, the CFA634 family of modules has been redesigned to fall more in line with our other Value Add families of intelligent modules.

    The module is keeping the same dimensions, mounting points, and existing header locations.

    Changes:
    - LCD controller is changing from Samsung S6A0073 to Rockworks RW1067
    - Holtek HT48R30 is being replaced by Cypress PSoC CY8C27443
    - USB interface integrated on PCB using FTDI FT232RL
    - PCB layout changed to accommodate new LCD controller, new microcontroller, integrated USB interfaces
    - The following hardware functionality has been migrated to firmware control;
    - - Interface selection
    - - Data normal / Inverted
    - - Splash screen control
    - - Baud rate

    * Specifications are subject to change
    Reason: Samsung S6A0073 LCD controller is EOL. Module has been redesigned to incorporate the Rockworks RW1067. The Holtek HT48R30 one-time-programmable controller replaced with the Cypress PSoC CY8C27443 for improved functionality.
    Impact: This new hardware version is designed to be as fit and form compatible as possible with the current shipping hardware. There are major changes to the PCB layout due to the re-design of the CFA634 family.

    Existing header locations and mounting points are renaming the same.

    Additional header locations have been added for programming the PSoC and future functionality.
    Recommendation: Engineering samples should be available Quarter 3, 2013. Please send an email to support@crystalfontz.com to work with our engineering and support team to assist you with the migration.
    Availability: Q3 2013 - Samples available
    End of Q3 / Beginning Q4 2013 - Transition to new version when previous version is exhausted
    Q1 2014 - All CFA634 shipments new hardware
    Price Change: We are anticipating an increase in pricing.
    New pricing is TBD
  • text_snippet
    Part Change Notice #10316: Minor PCB revision to accommodate longer life MLCC capacitors. Hardware and firmware updating to v2.4.
    Products Affected: CFA634-NFG-KS, CFA634-TFH-KS, CFA634-TMI-KS, CFA634-YFH-KS, CFA634-YDI-KS, CFA634-NFG-KU, CFA634-TFH-KU, CFA634-TMI-KU, CFA634-YFH-KU, CFA634-YDI-KU
    Date Issued: February 1, 2011
    Summary: 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:


    1. PCB changes to accommodate MLCC capacitors. This hardware revision to v2.4 impacts C7, C3, and C4.

    2. 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:

    https://www.crystalfontz.com/products/pcn.phtml?id=10308
    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.
    Availability: Volume availability Second Quarter 2011.
    Price Change: No price change at this time
  • text_snippet
    Part Change Notice #10308: Update CFA634 series to firmware v2.3 and wide temperature LCD.
    Products Affected: CFA634-YMC-KS, CFA634-NFA-KS, CFA634-TFB-KS, CFA634-TMC-KS, CFA634-YFB-KU, CFA634-YMC-KU, CFA634-NFA-KU, CFA634-TFB-KU, CFA634-TMC-KU, CFA634-NFG-KS, CFA634-TFH-KS, CFA634-TMI-KS, CFA634-YFH-KS, CFA634-YDI-KS, CFA634-NFG-KU, CFA634-TFH-KU, CFA634-TMI-KU, CFA634-YFH-KU, CFA634-YDI-KU
    Date Issued: January 10, 2011
    Summary: 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:
    1. Wide temperature support with -20°C to +70°C operation / -30°C to +80°C storage

    2. 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.

    3. 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.

    4. 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.
      Availability: Volume availability Second Quarter 2011.
      Price Change: No price change at this time
      Attachment: 634_Wide_Temp_PCN.pdf (285KB)
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