This product is discontinued and has been replaced by CFA634-YFH-KS
20x4 SPI Character LCD
Part Number: CFA634-NFA-KS
CFA-634 Serial LCD 20x4, RoHS Compliant, No Backlight, FSTN Positive, Reflective, 0°C to +50°C, 6:00
Recommended replacement parts:
CFA634-YFH-KS or CFA634-TFH-KS
Product Variants
RS232
Logic Level Serial
SPI
I2C
USB
Logic Level Serial Inverted
TECHNICAL SPECS
Physical Characteristics
Characters x Lines | 20 x 4 |
Module Overall | width | height | depth |
---|---|---|---|
millimeters | 130 | 63 | 15.9 |
inches | 5.118 | 2.480 | 0.626 |
PCB Outline | width | height | depth |
---|---|---|---|
millimeters | 130 | 63 | 15.9 |
inches | 5.118 | 2.480 | 0.626 |
Viewing Area | width | height |
---|---|---|
millimeters | 102 | 41.5 |
inches | 4.016 | 1.634 |
Active Area | width | height |
---|---|---|
millimeters | 93.54 | 34 |
inches | 3.683 | 1.339 |
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 |
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 |
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% |
Electronics
Interface | Logic Level Serial, RS232, SPI |
Part Change Notice
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Part Change Notice #10580: Reverted the SPI functionality to Crystalfontz CFA634 legacy implementation
Part Change Notice #10454: New v3.1 hardware version for CFA634 family of modules.
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:
|
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) |