SPI 20x4 Character LCD (EOL) from Crystalfontz

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                This product is discontinued please contact support to see if there is a replacement part available.          
SPI 20x4 Character LCD (EOL)Part Number: CFA634-NFG-KSCFA-634 Serial LCD 20x4, RoHS Compliant, No Backlight, FSTN Positive, Reflective -20°C to +70°C 6:00


	CFA634 Family Characteristics:


	 
	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 three choices of overlay to fit two 5.25" wide bays is available.
	The CFA634 family has four colors choices:
	CFA634-TFH-Kx: White edge-lit LED backlight with positive STN transflective mode. Displays dark (near-black) characters on light (near-white) background. The display can be read in normal office lighting, in dark areas, andin bright sunlight.
	CFA634-TMI-Kx: White edge-lit LED backlight with negative STN transmissive mode LCD. Displays light (nearwhite) characters on a blue background. The display can be read in normal office lighting and in dark areas. May be difficult to read in direct sunlight.
	CFA634-YDI-Kx: Yellow-green array LED backlight with negative FFSTN transmissive mode LCD. Displays yellow-green characters on a dark (near-black) background. The display can be read in normal office lighting and in dark areas. May be difficult to read in direct sunlight.
	CFA634-YFH-Kx: Yellow-green array LED backlight with positive FSTN transflective mode LCD. Displays dark (near-black) characters on yellow-green background. The display can be read in normal office lighting, in dark areas, and in bright sunlight.
	Use any of six interfaces on any module in the CFA634 family by simply changing the interface selection in a command and using the appropriate jumper configurations.
	The displays have a 6 o’clock viewing angle (polarizer viewing direction).
	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.
	The modules have a RockWorks RW1067 controller.
	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.
	Wide temperature range for operation is -20°C to +70°C.
	RoHS compliant. You can download the RoHS and REACH documents from the Datasheets & Files section.
Product VariationsInterfacesLogic Level Serial InvertedSPILogic Level SerialI2CUSBRS232
ColorsYellow-Green on Black
Yellow-Green LED BacklightWhite on Blue
White LED BacklightBlack on Yellow-Green
Yellow-Green LED BacklightDark on Light-Gray
White LED Backlight

 square_foot Physical Characteristics
Physical Characteristics

        Characters x Lines
            20 x 4


    Module Overall        width
        height
        depth
		  

        millimeters
        130
        63
        15.9
    

        inches
        5.12
        2.48
        0.63
    


    PCB Outline        width
        height
        depth
		  

        millimeters
        130
        63
        15.9
    

        inches
        5.12
        2.48
        0.63
    


    Viewing Area        Width
        Height
		  

        millimeters
        102
        41.5
    

        inches
        4.02
        1.63
    


    Active Area        Width
        Height
		  

        millimeters
        93.54
        34
    

        inches
        3.68
        1.34
    


    Character Size        Width
        Height
		  

        millimeters
        3.84
        6.38
    

        inches
        0.151
        0.251
    


    Character Pitch        Width
        Height
		  

        millimeters
        4.68
        8.9
    

        inches
        0.184
        0.350
    


    Dot Size        Width
        Height
		  

        millimeters
        0.72
        0.86
    

        inches
        0.028
        0.034
    


    Dot Pitch        Width
        Height
		  

        millimeters
        0.78
        0.92
    

        inches
        0.031
        0.036
    


        Weight
            147g

 visibility Optical Characteristics
Optical Characteristics

        Glass Type/Glass Color
            FSTN/Light Gray
Polarizer
            Reflective
View Direction
            6 o'clock
Sunlight Readable
            Yes


        Backlight Type
            None
Mode
            Positive
Foreground Color
            Dark
Background Color
            Light Gray

 nature Environmental
Environmental

    Operating Temperatures        min
        max
		  

        Celsius
        -20°
        70°
    

        Fahrenheit
        -4°
        158°
    


    Storage Temperatures        min
        max
		  

        Celsius
        -30°
        80°
    

        Fahrenheit
        -22°
        176°
    


    Humidity        min
        max
		  

        Non-condensing
        0%
        90%
    

 cable Electronics
Electronics

        Interface
            Logic Level Serial, RS232, SPI

 picture_as_pdf Datasheets
picture_as_pdfCFA634-NFG-KS Data Sheet v1.1.pdf
(Datasheet V 1.1, Hardware 2.4, Firmware 2.4)
picture_as_pdfCFA634-NFG-KS Data Sheet v1.0.pdf
(Datasheet V 1.0, Hardware 2.4, Firmware 2.4)

                       
                       
                                            
                            
                        
                                                     



        	 

         

Interfaces	Logic Level Serial Inverted SPI Logic Level Serial I2C USB RS232

Colors	Yellow-Green on Black Yellow-Green LED Backlight White on Blue White LED Backlight Black on Yellow-Green Yellow-Green LED Backlight Dark on Light-Gray White LED Backlight

Module Overall	width	height	depth
millimeters	130	63	15.9
inches	5.12	2.48	0.63

PCB Outline	width	height	depth
millimeters	130	63	15.9
inches	5.12	2.48	0.63

Viewing Area	Width	Height
millimeters	102	41.5
inches	4.02	1.63

Active Area	Width	Height
millimeters	93.54	34
inches	3.68	1.34

Character Size	Width	Height
millimeters	3.84	6.38
inches	0.151	0.251

Character Pitch	Width	Height
millimeters	4.68	8.9
inches	0.184	0.350

Dot Size	Width	Height
millimeters	0.72	0.86
inches	0.028	0.034

Dot Pitch	Width	Height
millimeters	0.78	0.92
inches	0.031	0.036

Operating Temperatures	min	max
Celsius	-20°	70°
Fahrenheit	-4°	158°

Storage Temperatures	min	max
Celsius	-30°	80°
Fahrenheit	-22°	176°

Humidity	min	max
Non-condensing	0%	90%

Notices

Part Change Notices

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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.

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.

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

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: PCB changes to accommodate 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: 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

Product Update #10313: New Product in Intelligent Serial LCD Modules: CFA634-NFG-KS

New Product:	CFA634-NFG-KS
Date Issued:	January 11, 2011
Summary:	New Product in Intelligent Serial LCD Modules: CFA634-NFG-KS
Description:	CFA-634 Serial LCD 20x4, RoHS Compliant, No Backlight, FSTN Positive, Reflective -20°C to +70°C 6:00

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

SPI 20x4 Character LCD (EOL)

Part Number: CFA634-NFG-KS

Product Variations

Interfaces

Colors

Physical Characteristics

Optical Characteristics

Environmental

Electronics

Part Change Notices

Subscribe to Part Change Notices by email or RSS

Part Change Notice #10580: Reverted the SPI functionality to Crystalfontz CFA634 legacy implementation

Part Change Notice #10455: New v3.1 firmware to support CFA634 hardware v3.1 family of module

Part Change Notice #10454: New v3.1 hardware version for CFA634 family of modules.

Part Change Notice #10316: Minor PCB revision to accommodate longer life MLCC capacitors. Hardware and firmware updating to v2.4.

Product Update #10313: New Product in Intelligent Serial LCD Modules: CFA634-NFG-KS

Part Change Notice #10308: Update CFA634 series to firmware v2.3 and wide temperature LCD.

LCD Software

User Forum

Tech Support

Glass Type/Glass Color	FSTN/Light Gray
Polarizer	Reflective
View Direction	6 o'clock
Sunlight Readable	Yes

Backlight Type	None
Mode	Positive
Foreground Color	Dark
Background Color	Light Gray