Product
Red 20x2 Character USB Display
Part Number: CFA631-RMF-KU
Red Backlit CFA631 USB LCD 20x2 Character LCD with four button keypad and transmissive polarizer, 0°C to +50°C Operating temperature, 12:00 viewing angle
Features:- 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
- This module is now available with I2C interface, please contact support@crystalfontz.com for more information.
Currently Shipping: HW Version 2H4, Firmware Version: U3v1
Pricing has been lowered significantly to liquidate current inventory.
Order Soon! We only have 694 left!
Product Variations
Colors | White on Blue White LED backlightRed on Dark Red LED backlight |
|---|
- square_foot Physical Characteristics
Physical Characteristics
Characters x Lines 20 x 2 Module Overall width height depth millimeters 101.6 25.4 93.1 inches 4.00 1.00 3.67 *depth doesn't include Keypad Diagonal Dimension 2.53" Viewing Area Width Height millimeters 66 13.8 inches 2.60 0.54 Active Area Width Height millimeters 63.55 10.35 inches 2.50 0.41 Character Size Width Height millimeters 2.6 4.5 inches 0.102 0.177 Character Pitch Width Height millimeters 3.18 5.2 inches 0.125 0.205 Dot Size Width Height millimeters 0.48 0.6 inches 0.019 0.024 Dot Pitch Width Height millimeters 0.53 0.65 inches 0.021 0.026 Weight 80g Keystroke Travel 2mm - visibility Optical Characteristics
Optical Characteristics
Glass Type/Glass Color STN/Blue Polarizer Transmissive View Direction 12 o'clock Backlight Color Red Backlight Type LED Mode Negative Foreground Color Red Background Color Dark - electric_bolt Electrical Specification
Electrical Specifications
Supply Voltage for Logic Typical 5V - nature Environmental
Environmental
Operating Temperatures min max Celsius 0° 50° Fahrenheit 32° 122° Storage Temperatures min max Celsius -10° 60° Fahrenheit 14° 140° Humidity min max Non-condensing 0% 90% - cable Electronics
Electronics
Interface USB -
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Additional Resources
Part Change Notice
Subscribe to Part Change Notices by email 
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End-Of-Life #11270: End-Of-Life Notification
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Part Change Notice #11226: Change to ENIG from Gold Plating
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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 #10428: CFA631 family Firmware version 3v1
Products Affected: CFA631-RMF-KU1, CFA631-RMF-KU2, CFA631-RMF-KU, CFA631-TMF-KU Date Issued: August 3, 2012 Summary: CFA631 family Firmware version 3v1 Last revision: v2.1 Description: The CFA631 family of modules is being revised to support a new LCD controller chip, the Rockworks RW1067. The changes to the CFA631 3v1 firmware are as follows.
For hardware changes, please see PCN #10427.
Updates:
Command 1 (0x01): Get Hardware & Firmware Version
Modules with the USB interface, -KU suffix, will report: CFA631:h2v4,u3v1
Command 12 (0x0C): Set LCD Cursor Style
Option 4 = inverting, blinking block is no longer supported. This option will result in a blinking underscore.
Command 22 (0x16): Send Command Directly to the LCD Controller
Any command sent specifically to the Samsung S6A0073 will need to be reviewed / modified for the commands / registers of the Rockworks RW1067. Please contact the Crystalfontz Engineering Support Team at support@crystalfontz.com for the RW1067 datasheet.
Enhancements:
Command 28 (0x1C): Set ATX Power Switch Functionality
Added auto polarity switch.
Improved pulse length functionality.
Added feature to hold until system off during power down.
Fixes:
Updates to timings and sequence of Serial interface power up to prevent possible corruption of data displayedReason: The Samsung S6A0073 LCD controller used was scheduled as End of Life. This EOL affected a number of intelligent modules from Crystalfontz America, Inc. The replacement RW1067 LCD controller was developed as a replacement for the Samsung S6A0073 LCD controller for Crystalfontz America, Inc by Rockworks (China). Impact: This announcement impacts all variants, interfaces, and part numbers that currently use the CFA631 family of modules. The CFA631 can continue to be used in current and future designs. Recommendation: Continue to order and build with the CFA631 as required by production schedules. Transition to the CFA631 h2v4 hardware and supporting firmware should be a seamless process. Engineering samples for qualification for the revised CFA631 are scheduled to be available Q3 of 2012.
Please contact our logistics team for engineering samples sales@crystalfontz.com.
For engineering and support questions, please contact our engineering support team at support@crystalfontz.comAvailability: Q3 2012
Review / Update customer Defined Part custom firmware
Q3 2012
New hardware and supporting firmware available for engineering samples
Estimated - Begin transition to h2v4 hardware as v2.1 hardware inventory is depleted
NOTE: We will not ship production orders of 3v0 hardware until the v2.1 inventory is depleted
Q4 2012
Estimated - CFA631 v2.1 hardware to be exhausted, transition to CFA631 h2v4 hardware / u3v1 firmware complete.Price Change: 2012-08-03
No scheduled price change at this time. - text_snippet
Part Change Notice #10427: CFA631 family Hardware version 2v4
Products Affected: CFA631-RMF-KU1, CFA631-RMF-KU2, CFA631-RMF-KU, CFA631-TMF-KU Date Issued: August 3, 2012 Summary: CFA631 family Hardware version 2v4 Last revision: v2.1 Description: The CFA631 family of modules is being revised to support a new LCD controller chip, the Rockworks RW1067. The changes to the CFA631 2v4 hardware are as follows:
1. LCD controller changing from Samsung S6A0073 to Rockworks RW1067
2. Supporting driving circuitry between the LCD controller and the LCD glass has been updated to support the Rockworks RW1067
3. The PCB layout has been updated to support the Rockworks RW1067
4. Firmware updates to support the Rockworks RW1067 and functional improvements – PCN #10428
The only changes to the CFA631 family are to support the Rockworks RW1067 controller.
There are no other physical changes to the CFA631.Reason: The Samsung S6A0073 LCD controller used was scheduled as End of Life. This EOL affected a number of intelligent modules from Crystalfontz America, Inc. The replacement RW1067 LCD controller was developed as a replacement for the Samsung S6A0073 LCD controller for Crystalfontz America, Inc by Rockworks (China). Impact: This announcement impacts all variants, interfaces, and part numbers that currently use the CFA631 family of modules. The CFA631 can continue to be used in current and future designs. Recommendation: Continue to order and build with the CFA631 as required by production schedules. Transition to the CFA631 h2v4 hardware and supporting firmware should be a seamless process. Engineering samples for qualification for the revised CFA631 are scheduled to be available Q3 of 2012.
Please contact our logistics team for engineering samples sales@crystalfontz.com.
For engineering and support questions, please contact our engineering support team at support@crystalfontz.comAvailability: Q3 2012
Review / Update customer Defined Part custom firmware
Q3 2012
New hardware and supporting firmware available for engineering samples.
Estimated - Begin transition to h2v4 hardware as v2.1 hardware inventory is depleted
NOTE: We will not ship production orders of 3v0 hardware until the v2.1 inventory is depleted
Q4 2012
Estimated - CFA631 v2.1 hardware to be exhausted, transition to CFA631 h2v4v0 hardware / u3v1 firmware completePrice Change: 2012-08-03
No scheduled price change at this time.
