CFA634-TFH-KL [CRYSTAIFONTZ]
INTELLIGENT LCD MODULES;
| 型号： | CFA634-TFH-KL |
| 厂家： | 
Crystalfontz America, Inc. |
| 描述： | INTELLIGENT LCD MODULES CD |
| 文件： | 总59页 (文件大小：5982K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Crystalfontz
INTELLIGENT LCD MODULES
DATA SHEET
Data Sheet Release Date 2015-03-30
for the
CFA634 Series
Hardware Versions: v3.2, Firmware Version: v3.2
Crystalfontz America, Incorporated
12412 East Saltese Avenue
Spokane Valley, WA 99216-0357
Phone: 888-206-9720
Fax:
Email: support@crystalfontz.com
URL: www.crystalfontz.com
509-892-1203
Crystalfontz
CFA634 Intelligent LCD Modules Hardware v3.2, Firmware v3.2
www.crystalfontz.com
Data Sheet Release 2015-03-30
Page 2
NOTICES
CFA634 Series Data Sheet Revision History
Data Sheet Release Date: 2015-03-30
Wherever listed, changed firmware revision number from “v3.1” to “v3.2”. For details, see the notice under
the Product Notices tab on the web pages for all part numbers in this series.
Wherever listed, changed hardware revision numbers from “v3.1 & v3.2” to “v3.2” only. Inventory for “v3.1”
was depleted.
In Configuration Choices (Pg. 8), replaced photo of CFA634 with a new photo that omits the previous
firmware version number.
In Module Outline Drawing (Pg. 16), added diameter dimension for mounting holes.
Added Current Consumption graph for CFA634-YDI-K* (Pg. 21).
In command Set Cursor Position (Column and Row) (\017, 0x11, Control+Q) (Pg. 44), corrected second byte
for the row from “(0-1)” to “(0-3)”.
In command Send Data Directly to the LCD Controller (\030, 0x1E, Control+Equal) (Pg. 49), removed from
table “\002 Control Register, (RS=0, RE=1)”. Also, the boxed note for this command was reworded to
caution “This command can disable or damage your display. Use this command at your own risk.”
Information in Display Module Reliability (Pg. 52) was updated.
Under Care And Handling Precautions section, added a bullet under Design and Mounting (Pg. 53) about
excessive external noise.
In Demonstration Software section, for 632/634 Boot Screen Beta Version (Pg. 55), added note “For use only
with display modules hardware v.2.4 and below.”
Wherever listed, updated descriptions of cable lengths.
Wherever needed, made minor changes in terms to match current publication standards. For example,
changed “family” to “series”. Changed “x” as a representative character in a part number to “*”.
Data Sheet Release: 2014-02-26
In Notices, added a statement that the CFA634 Series has nonvolatile memory.
In Optical Characteristics Specifications, added specifications for the color variant CFA634-YDI-Kx.
Specifications are identical to CFA634-TFH-Kx and CFA634-YFH-Kx.
In Module Outline Drawing, removed tolerance specification. Hardware has not changed.
In first sentence in RS232 Power And Data Communications (CFA632-xxx-KSCFA634-xxx-KS), corrected
from “PC’s 8-pin serial port” to “PC’s 9-pin serial port”.
Clarified SPI interface description, including an improved graph. See SPI (CFA632-xxx-KPCFA634-xxx-KP).
In the first paragraph of the section I2C (CFA632-xxx-KCCFA634-xxx-KC), a recommendation was added to
include external pull-ups.
Expanded explanations and included examples on how to use some of the module configuration commands
in Module Configuration (\009, 0x09, Control+I).
Added command Large Block Number (\028, Control Backslash) back into the Data Sheet. This command
was mistakenly omitted in the previous Data Sheet.
In Care and Handling Precautions, added handling caution Modules Shipped In Trays
Updated and expanded information in APPENDIX A: FREE DEMONSTRATION AND DRIVER SOFTWARE.
Wherever listed, updated length specification of cables.
Minor changes in wording, graphics, and formatting to improve readability.
A future revision of this Data Sheet will include current consumption specifications for the LCD modules with
“YDI” color variant.
Crystalfontz
CFA634 Intelligent LCD Modules Hardware v3.2, Firmware v3.2
www.crystalfontz.com
Data Sheet Release 2015-03-30
Page 3
CFA634 Series Data Sheet Revision History (Continued)
Data Sheet Release: 2013-09-10
Current Consumption graphs were improved to make them easier to understand. Current consumption of
CFA634 modules has not changed. See Current Consumption.
Corrected J2 pin names to match names printed on the CFA634 PCB. Pin functions have not changed.
In Demonstration And Test Programs, removed reference to WinTest and added reference to the new cfTest.
Compared to WinTest, cfTest has improved functionality. cfTest works on all Crystalfontz intelligent modules.
A future revision of this Data Sheet will include optical specifications and current consumption for the modules with
“YDI” color variant.
Data Sheet Release: 2013-08-21 Preliminary
Complete Data Sheet rewrite for the CFA634 series of modules.
Information in previous individual variant Data Sheets were combined in this new series Data Sheet.
New part numbers for modules with new interfaces were added.
Discontinued modules CFA634-NFG-KS and CFA634-NFG-KU were omitted.
Due to a more accurate scale, weight measurements for all CFA634-xxx-KS modules were corrected in this
Data Sheet from 112 grams to 119 grams. Weight measurements for the CFA634-xxx-KU modules changed
from 116 grams to 119 grams. The CFA634-xxx-KU no longer requires the USB642634 interface board.
All content was updated to reflect hardware version v3.1 and firmware version v3.1.
This is a preliminary Data Sheet. The next Data Sheet will include optical specifications and current consumption
for the modules with “YDI” color variant.
Data Sheet version: v1.1
Changes:
Improved illustrations by removing unnecessary components and
2011/03/28
adding better descriptions. See Module Outline Drawings and
for CFA634-xxx-KS and
Jumper Locations. The module has not changed.
CFA634-xxx-KU
In CFA634-xxx-KU Data Sheet, added explanation for default
information displayed on boot screen. See photo below list of
MAIN FEATURES.
2011/03/01
for CFA634-xxx-KS and
CFA634-xxx-KU
Data Sheet version: v1.0
First Data Sheet.
Hardware and Firmware Revisions
For information about firmware and hardware revisions for the this series of intelligent LCD modules, see Part Change
Notifications (PCNs) under the Notices tab on the website page for each CFA634 part number.
About Variations
We work continuously to improve our products. Because display technologies are quickly evolving, these products may have
component or process changes. Slight variations (for example, contrast, color, or intensity) between lots are normal. If you
need the highest consistency, whenever possible, order and arrange delivery for your production runs at one time so your
displays will be from the same lot.
Crystalfontz
CFA634 Intelligent LCD Modules Hardware v3.2, Firmware v3.2
www.crystalfontz.com
Data Sheet Release 2015-03-30
Page 4
About Volatility
The CFA634 series of Crystalfontz Intelligent LCD Modules have nonvolatile memory.
Additional Fine Print
Certain applications using Crystalfontz America, Inc. products may involve potential risks of death, personal injury, or severe
property or environmental damage (“Critical Applications”). CRYSTALFONTZ AMERICA, INC. PRODUCTS ARE NOT
DESIGNED, INTENDED, AUTHORIZED, OR WARRANTED TO BE SUITABLE FOR USE IN LIFE-SUPPORT
APPLICATIONS, DEVICES OR SYSTEMS OR OTHER CRITICAL APPLICATIONS. Inclusion of Crystalfontz America, Inc.
products in such applications is understood to be fully at the risk of the customer. In order to minimize risks associated with
customer applications, adequate design and operating safeguards should be provided by the customer to minimize inherent
or procedural hazard. Please contact us if you have any questions concerning potential risk applications.
Crystalfontz America, Inc. assumes no liability for applications assistance, customer product design, software performance,
or infringements of patents or services described herein. Nor does Crystalfontz America, Inc. warrant or represent that any
license, either express or implied, is granted under any patent right, copyright, or other intellectual property right of
Crystalfontz America, Inc. covering or relating to any combination, machine, or process in which our products or services
might be or are used.
All specifications in Data Sheets and on our website are, to the best of our knowledge, accurate but not guaranteed.
Corrections to specifications are made as any inaccuracies are discovered.
Company and product names mentioned in this publication are trademarks or registered trademarks of their respective
owners.
Copyright © 2015 by Crystalfontz America, Inc., 12412 East Saltese Avenue, Spokane Valley, WA 99216-0357 U.S.A
Crystalfontz
CFA634 Intelligent LCD Modules Hardware v3.2, Firmware v3.2
www.crystalfontz.com
Data Sheet Release 2015-03-30
Page 5
CONTENTS
Notices - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2
INTRODUCTION- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 8
Configuration Choices - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 8
Choose From Twenty-Four Configurations - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 8
Customize Any Of The Twenty-Four Configurations - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 9
How Part Number Configurations Are Described In This Data Sheet - - - - - - - - - - - - - - - - - - - - - - - 9
Explanation Of Part Number Codes - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 10
Main Features - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 11
Comparison Of The Four Color (Variant) Choices - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 12
Kits And Accessories (Modules, Brackets, Overlays, And Cables) - - - - - - - - - - - - - - - - - - - - - - - - - - - 13
MECHANICAL SPECIFICATIONS - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 15
Physical Characteristics - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 15
Module Outline Drawing - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 16
ELECTRICAL SPECIFICATIONS- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 17
System Block Diagram - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 17
LCD Duty And Bias - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 17
Absolute Maximum Ratings - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 18
Recommended DC Characteristics - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 18
Current Consumption - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 19
CFA634-TFH-K* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 19
CFA634-TMI-K* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 20
CFA634-YDI-K* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 21
CFA634-YFH-K* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 22
ESD (Electro-Static Discharge) Specifications - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 23
LED BACKLIGHT CHARACTERISTICS - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 23
OPTICAL CHARACTERISTICS - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 24
Optical Characteristics Specifications - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 24
CFA634-TFH-K*, CFA634-YDI-K*, and CFA634-YFH-K* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 24
CFA634-TMI-K* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 25
Optical Characteristics Test Conditions And Definitions - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 25
Definition Of Optimal Contrast Setting - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 26
Definition Of Response Time (Tr, Tf) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 27
Definition Of 6 O'Clock And 12:00 O'Clock Viewing Angles - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 28
Definition Of Vertical And Horizontal Viewing Angles (CR>2) - - - - - - - - - - - - - - - - - - - - - - - - - - - 28
INTERFACE CONNECTION INFORMATION - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 29
Display Module Part Numbers For Default Interfaces - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 29
How To Reset Any Module’s Interface To USB - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 29
USB Power And Data Communications (CFA634-***-KU) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 30
RS232 Power And Data Communications (CFA634-****-KS) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 31
LL - Logic Level (CFA634-***-KL) and LLI - Logic Level, Inverted (CFA634-***-KN) - - - - - - - - - - - - - - 33
SPI (CFA634-***-KP) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 34
I2C (CFA634-***-KC) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 36
Location and Description of Jumpers To Change Interface Type - - - - - - - - - - - - - - - - - - - - - - - - - - - - 37
Alternate Method To Power the Backlight For Non-USB Interfaces - - - - - - - - - - - - - - - - - - - - - - - - - - 39
Crystalfontz
CFA634 Intelligent LCD Modules Hardware v3.2, Firmware v3.2
www.crystalfontz.com
Data Sheet Release 2015-03-30
Page 6
CONTENTS, CONTINUED
HOST COMMUNICATIONS - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 40
About Handshaking - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 40
Control Codes And Their Functions - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 40
Description Of Control Functions - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 41
Cursor Home (\001, 0x01, Control+A) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 41
Hide Display (\002, 0x02, Control+B) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 41
Show Display (\003, 0x03, Control+C) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 41
Hide Cursor (\004, 0x04, Control+D) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 42
Show Underline Cursor (\005, 0x05, Control+E) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 42
Show Blinking Block Cursor with Underscore (\006, 0x06, Control+F) - - - - - - - - - - - - - - - - - - - - - 42
Backspace (\008, 0x08, Control+H) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 42
Module Configuration (\009, 0x09, Control+I) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 42
Line Feed (\010, 0x0A, Control+J or Control+Enter) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 43
Delete In Place (\011, 0x0B, Control+K) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 44
Form Feed (\012, 0x0C, Control+L) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 44
Carriage Return (\013, 0x0D, Control+M) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 44
Backlight Control (\014, 0x0E, Control+N) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 44
Contrast Control (\015, 0x0F, Control+O) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 44
Set Cursor Position (Column and Row) (\017, 0x11, Control+Q) - - - - - - - - - - - - - - - - - - - - - - - - - 44
Horizontal Bar Graph (\018, 0x18. Control+R) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 44
Scroll ON (\019, 0x13, Control+S) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 46
Scroll OFF (\020, Control+T) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 46
Wrap ON (\023, 0x17, Control+W) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 46
Wrap OFF (\024, 0x18, Control+X) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 46
Set Custom Character Bitmap (\025, 0x19, Control+Y) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 46
Reboot (\026, 0x1A, Control+Z) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 47
Escape Sequence Prefix (\027, 0x1B, Escape) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 48
Escape Sequence Prefix (\027, 0x1B, Escape) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 48
Large Block Number (\028, Control Backslash) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 48
Send Data Directly to the LCD Controller (\030, 0x1E, Control+Equal) - - - - - - - - - - - - - - - - - - - - - 49
Show Information Screen (\031, 0x1F, Control+Minus) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 49
CHARACTER GENERATOR ROM (CGROM) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 50
DISPLAY MODULE RELIABILITY AND LONGEVITY - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 52
Display Module Reliability - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 52
Display Module Longevity (EOL / Replacement Policy) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 52
CARE AND HANDLING PRECAUTIONS - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 53
APPENDIX A: FREE DEMONSTRATION AND DRIVER SOFTWARE- - - - - - - - - - - - - - - - - - - - - - - - - - 55
Demonstration Software - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 55
cfTest - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 55
CrystalControl2 (CC2) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 55
Linux_CLI_Examples - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 55
BasicStamp2 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 55
632/634 Boot Screen Beta Version - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 55
Drivers - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 55
Crystalfontz
CFA634 Intelligent LCD Modules Hardware v3.2, Firmware v3.2
www.crystalfontz.com
Data Sheet Release 2015-03-30
Page 7
Linux Driver - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 55
USB LCD Driver - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 56
APPENDIX B: QUALITY ASSURANCE STANDARDS- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 57
LIST OF FIGURES
Figure 1. Example Of Bracket And Overlay- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 14
Figure 2. Module Outline Drawing - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 16
Figure 3. System Block Diagram - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 17
Figure 4. Definition Of Optimal Contrast Setting (Negative Image) - - - - - - - - - - - - - - - - - - - - - - - - - - - - 26
Figure 5. Definition Of Optimal Contrast Setting (Positive Image) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 26
Figure 6. Definition Of Response Time (Tr, Tf) (Negative Image) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 27
Figure 7. Definition Of Response Time (Tr, Tf) (Positive Image) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 27
Figure 8. Definition Of 6:00 O'clock And 12:00 O'Clock Viewing Angles - - - - - - - - - - - - - - - - - - - - - - - - 28
Figure 9. Definition Of Horizontal And Vertical Viewing Angles (CR>2) - - - - - - - - - - - - - - - - - - - - - - - - - 28
Figure 10. Location Of JPDFLT Pins To Reset Interface To USB - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 30
Figure 11. USB Connector Pins Labeled - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 31
Figure 12. Non-Backlight Operation Through 9-Pin Serial Port DB9 - - - - - - - - - - - - - - - - - - - - - - - - - - - - 32
Figure 13. Location Of J2 7-Pin Expansion Port For LL Or LLi Interface - - - - - - - - - - - - - - - - - - - - - - - - - 33
Figure 14. Location Of JPWR Expansion Port- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 34
Figure 15. SPI Timing Diagram - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 35
Figure 16. Location Of J_I2C 4-Pin Expansion Port For I2C Interface - - - - - - - - - - - - - - - - - - - - - - - - - - - 36
Figure 17. Jumper Locations On Back of PCB - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 37
Figure 18. Character Generator ROM (CGROM) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 50
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Page 8
INTRODUCTION
CONFIGURATION CHOICES
Choose From Twenty-Four Configurations
If you already know what interface you need, you can buy CFA634 modules shipped with any of the six interfaces ready
to use. You also have a choice of four colors. Twenty-four part numbers represent the different combinations of interfaces
and colors
PART NUMBERS
Variant Color
TFH
TMI
YFH
YDI
USB
CFA634-TFH-KU CFA634-TMI-KU CFA634-YDI-KU CFA634-YFH-KU
19200 baud equivalent throughput
RS232
“full swing” RS232 serial
115200/19200/9600/4800/2400 baud
(19200 default)
CFA634-TFH-KS CFA634-TMI-KS CFA634-YDI-KS CFA634-YFH-KS
LL
logic level serial
0v to +5v
CFA634-TFH-KL
CFA634-TMI-KL
CFA634-YDI-KL
CFA634-YFH-KL
LLi
logic level serial, inverted
+5v to 0v
CFA634-TFH-KN CFA634-TMI-KN CFA634-YDI-KN CFA634-YFH-KN
I2C
CFA634-TFH-KC CFA634-TMI-KC CFA634-YDI-KC CFA634-YFH-KC
CFA634-TFH-KP CFA634-TMI-KP CFA634-YDI-KP CFA634-YFH-KP
SPI
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Customize Any Of The Twenty-Four Configurations
These twenty-four configurations can be customized to include different connectors and cables. When you customize
any one of the twenty-four configurations using the Customize and Add to Cart feature on a CFA634 product’s web page,
a unique part number is generated by adding characters to the end of the part number. For example, for the
CFA634-YDI-KL, you may choose to customize by adding a 7-pin header. The part number in your shopping cart will be
CFA634-YDI-KL16.
As a result of customizing and kit configurator choices, we offer over 93 configurations within the CFA634 series.
How Part Number Configurations Are Described In This Data Sheet
For brevity, this Data Sheet uses the following part number naming conventions:
4 COLORS, x = ANY
INTERFACE
CFA634-TFH-K*
CFA634-TMI-K*
CFA634-YDI-K*
CFA634-YFH-K*
*** = Any Variant Color
I2C
CFA634-***-KC
CFA634-***-KL
CFA634-***-KN
CFA634-***-KP
CFA634-***-KS
CFA634-***-KU
Logic Level Serial
Logic Level Serial, Inverted
SPI
“Full Swing” RS232 Serial
USB
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EXPLANATION OF PART NUMBER CODES
CFA 634 - * * * - K * *
Brand
Crystalfontz America, Incorporated
634
Module Identifier
Backlight Type and Color
* =
T – LED, white
Y – LED, yellow-green
Fluid Type, Image (positive or negative),
and LCD Glass Color
* =
D – FFSTN, negative, black
F – FSTN, positive, neutral
M –STN, negative, blue
Polarizer Film Type, Operating Temperature
Range1, and Viewing Angle (O ‘Clock)2
* =
I – Transmissive, Wide Temperature Range, 6:00
H – Transflective, Wide Temperature Range, 6:00
1
Wide Temperature operating range for these display modules is -20°C minimum to +70°C maximum.
2
For more information on Viewing Angle, see Definition Of Vertical And Horizontal Viewing Angles (CR>2) (Pg. 28).
Special Code
K – Manufacturer’s code
Interface Code
* =
C – I2C
P – SPI
L – LL (logic level serial)
N – LLi (logic level serial, inverted)
S – “full swing” RS232 serial
U – USB
Customize3
x = 1 or more characters.
3
When you customize any one of the twenty-four products using the Customize and Add to Cart feature on a CFA634 web
page, a unique part number is generated by adding one or more characters to the end of the part number.
Display modules customized by adding accessories using the Kit Configurator also have unique part numbers. See Kits
And Accessories (Modules, Brackets, Overlays, And Cables) (Pg. 13).
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MAIN FEATURES
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. See Kits
And Accessories (Modules, Brackets, Overlays, And Cables) (Pg. 13).
The CFA634 series has four color (variant) choices:
CFA634-TFH-K*: 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, and
in bright sunlight.
CFA634-TMI-K*: White edge-lit LED backlight with negative STN transmissive mode LCD. Displays light (near-
white) 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-K*: 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-K*: 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 series by changing the interface selection in a command and
using the appropriate jumper configurations. See INTERFACE CONNECTION INFORMATION (Pg. 29).
The displays have a 6 o’clock viewing angle (polarizer viewing direction). See Definition Of Vertical And Horizontal
Viewing Angles (CR>2) (Pg. 28).
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 Contrast Control (\015, 0x0F, Control+O) (Pg. 44).
The modules have a RockWorks RW1067 or compatible controller.
Robust packet based communications protocol with 16-bit CRC.
Extended voltage (9-15 volts for interfaces using DB9 connector) and 5 volts power inputs for the controller. Back-
light is 5 volts.
Use the nonvolatile memory capability (EEPROM) to customize the “power-on” display settings.
Temperature range for operation is -20°C to +70°C.
RoHS compliant. You can download the Certificate of Compliance for ISO, RoHS, and REACH from the Datasheets
& Files tab on any CFA634 part number’s website page. Crystalfontz American and the factory are ISO certified.
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Page 12
COMPARISON OF THE FOUR COLOR (VARIANT) CHOICES
Part Number
CFA634-TFH-K*
STN
CFA634-TMI-K*
STN
CFA634-YDI-K*
FFSTN
CFA634-YFH-K*
FSTN
Fluid
LCD Glass Color
Image
neutral
blue
black
neutral
positive
negative
transmissive
negative
positive
Polarizer Film
LED Backlight
transflective
transmissive
transflective
white
yellow-green
FSTN has better contrast than STN. FFSTN has better contrast than FSTN.
Positive Image: Sunlight readable and also readable in dark areas.
Negative Image: May be difficult to read in direct sunlight.
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KITS AND ACCESSORIES (MODULES, BRACKETS, OVERLAYS, AND
CABLES)
In addition to using the “Customize and Add to Cart” feature to customize a display module with different cables and
connectors on a website order, you can use the Kit Configurator to order kits for CFA634-****-KS (“full swing” RS232
serial default interface) and CFA634-***-KU (USB default interface) that include accessories.
Here is an explanation of kit part numbers:
DB 634 - ** *** - K * *
[type]
DB – Optional PC CDROM mounting bracket that fits two 5.25" bays.
[series]
634 – Part of 634 series
[overlay]
An overlay for the front of bracket with a display window of clear thick hard-coated polycarbonate
Lexan®. Choice of four overlays are:
AL – Silver Aluminum
BG – Beige Plastic
BK – Black Plastic
[variant]
Choice of two colors (variants):
TFH – Dark (near-back) characters on light (near-white) background
TMI – Light (near-white) characters on blue background
YDI – Yellow-green characters on dark (near-black) background
YFH – Dark (near-black) characters on yellow-green background
[default interface]
Two choices:
S – “full swing” RS232 serial
U – USB
[additional parts in kit]
x = One or more cables.
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Here is a photo of a CFA634 bracket with black overlay:
Figure 1. Example Of Bracket And Overlay
If you want a CFA634-***-KC, CFA634-***-KL, or CFA634-***-KP module mounted on a bracket with an overlay, please
contact Technical Support at support@crystalfontz.com to receive a price quote for a special order kit.
You can also buy cables individually. See INTERFACE CONNECTION INFORMATION (Pg. 29) for descriptions of
suggested cables for the various interfaces. Or see all of the cables on our website here.
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Data Sheet Release 2015-03-30
Page 15
MECHANICAL SPECIFICATIONS
PHYSICAL CHARACTERISTICS
ITEM
SPECIFICATION
Pixels
Pixel Size Millimeters: 0.72 (W) x 0.86 (H) mm
Pixel Pitch Millimeters: 0.78 (W) x0.92 (H) mm
Millimeters: 93.54 (W) x 34.00 (H) mm
Inches: 3.68" (W) x 1.34" (H)
Active Area
Millimeters: 102.00 (W) x 41.50 (H) mm
Inches: 4.02"(W) x 1.63" (H)
Viewing Area
Character
Millimeters: 4.68 (W) x 8.90 (H) mm
Inches: 0.18" (W) x 0.33"(H)
Character Pitch
Millimeters: 3.84 (W) x 7.30 (H) mm
Inches: 0.15" (W) x 0.29" (H)
Character Size
Module Overall Dimensions
Width and Height
Millimeters: 130.00 (W) mm x 63.00 (H) mm
Inches: 5.12" (W) mm x 2.48" (H) mm
Module Depth
(Includes DB9 Connector)
Millimeters: 19.90 mm
Inches: 0.78"
Weight
119 grams typical
130.00 Overall Display Module (PCB)
T2 See Note
T1 See
117.60 Bezel
102.00 Viewing Area
8.30
Note
93.54 Active Area
9
6
1
1
7
J2
1.60
10.20
18.00
See Pin
Detail A
See Character
Detail B
22.23
124.00 Mounting Holes
7-R 0.50
.78
.72
1
7
J2
3.00
P2.54 x (7-1 ) = 15.24
23.90
Pin Detail A
.06
Pixel Detail C
Note:
3.84
1. T1=10.00 mm (LED Backlight)
2. T2=19.90 mm (Overall Depth)
See Pixel
Detail C
4.68
Character Detail B
copyright © 2015 by
Part No.(s):
Scale:
Not to scale
Units:
Millimeters
Drawing Number:
CFA634_Series_Master
Date:
Hardware Rev.:
v3.2
Crystalfontz America, Inc.
Sheet:
CFA634 Series
www.crystalfontz.com/products/
of
2015-03-25
1
1
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Page 17
ELECTRICAL SPECIFICATIONS
SYSTEM BLOCK DIAGRAM
Use any of six interfaces on any of the modules in the series by simply changing the interface selection in a command
and using the appropriate jumper configurations. See INTERFACE CONNECTION INFORMATION (Pg. 29) and Module
Configuration (\009, 0x09, Control+I) (Pg. 42).
Host
CFA634
32
COM
LCD Panel
20 x 4
LCD Module
Part numbers: modules are shipped with this interface ready to use.
LCD
Controller
60
SEG
60
SEG
CFA634-xxx-KC
CFA634-xxx-KN
CFA634-xxx-KP
Segment Driver
I2C
LLi
SPI
LL
LCD
CFA634-xxx-KL
Microcontroller
CFA634-xxx-KS
RS232 Level
Converter
Contrast
Control
RS232
USB
Backlight
Brightness
Control
CFA634-xxx-KU
Display Backlight
USB Controller
Figure 3. System Block Diagram
LCD DUTY AND BIAS
DRIVING
METHOD
SPECIFICATION
Duty1
Bias2
1/32
1/6.7
1The duty cycle, also known as duty ratio or multiplex rate, is the fraction of total frame time that each row of the LCD is
addressed.
2The drive bias, also known as voltage margin, is related to the number of voltage levels used when driving the LCD.
Bias is defined as 1/(number of voltage levels-1). The more segments driven by each driver(1), the higher number of
voltage levels are required. There is a direct relationship between the bias and the duty.
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Page 18
ABSOLUTE MAXIMUM RATINGS
ABSOLUTE MAXIMUM RATINGS
TOP
TST
Operating Temperature
-20°C
+70°C
+80°C
90%
Storage Temperature
-30°C
10%
0
Humidity Range, Non-condensing
Supply Voltage For Logic (See note below)
RH
VDD
+5.25v
Input and Output Pins for RS232 Serial (for CFA634-****-KS)
VRX
VTX
RS232 Input Pin
-25v
-13v
+25v
+13v
RS232 Output Pin
Note
These are stress ratings only. Extended exposure to the absolute maximum ratings
listed above may affect device reliability or cause permanent damage. Functional
operation of the module at these conditions beyond those listed under Recommended
DC Characteristics (Pg. 18) is not implied.
Powering from pins 4 and 7 on DB9, maximum voltage rating is +15v. (See pin
descriptions on (Pg. 31).
Changes in temperature can result in changes in contrast.
RECOMMENDED DC CHARACTERISTICS
RECOMMENDED DC CHARACTERISTICS
VDD-VO
VIH
+5.00v
Supply Voltage for Logic (+5v)
+4.80v
+2.1v
VSS
+5.25v
VDD
Logic Input High Voltage
-
-
VIL
Logic Input Low Voltage
+.08v
+15v
RS232 serial (for CFA634-****-KS)
(supplied through DB9 connector using on-board regulator)
+9v
-
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CURRENT CONSUMPTION
Current consumption varies by color (variant) choice. Current consumption is the same for all interfaces.
CFA634-TFH-K*
180
170
160
150
Backlight at 100%
140
130
120
110
4.5v 4.6v 4.7v 4.8v 4.9v 5.0v 5.1v 5.2v 5.25v 5.4v 5.5v
VDD
40
39
38
37
36
35
34
33
32
31
30
Backlight at 0%
4.5v 4.6v 4.7v 4.8v 4.9v 5.0v 5.1v 5.2v 5.25v 5.4v 5.5v
VDD
TYPICAL
ITEMS ENABLED
CURRENT CONSUMPTION
VDD = +4.5v
VDD = +5.0v
Logic LCD Backlight
X
X
0%
32 mA
34 mA
100%
119 mA
145 mA
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CFA634-TMI-K*
180
170
160
150
140
130
120
110
Backlight at 100%
4.5v 4.6v 4.7v 4.8v 4.9v 5.0v 5.1v 5.2v 5.25v 5.4v 5.5v
VDD
38
37
36
35
34
33
32
31
30
29
Backlight at 0%
4.5v 4.6v 4.7v 4.8v 4.9v 5.0v 5.1v 5.2v 5.25v 5.4v 5.5v
VDD
TYPICAL
ITEMS ENABLED
CURRENT CONSUMPTION
VDD = +4.5v
VDD = +5.0v
Logic LCD Backlight
X
X
0%
32 mA
34 mA
100%
120 mA
146 mA
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CFA634-YDI-K*
800
700
600
500
400
300
200
100
0
Backlight at 100%
4.5v 4.6v 4.7v 4.8v 4.9v 5.0v 5.1v 5.2v 5.25v 5.4v 5.5v
VDD
31
30
29
28
27
26
25
Backlight at 0%
4.5v 4.6v 4.7v 4.8v 4.9v 5.0v 5.1v 5.2v 5.25v 5.4v 5.5v
VDD
TYPICAL
ITEMS ENABLED
CURRENT CONSUMPTION
VDD = +4.5v
VDD = +5.0v
Logic LCD Backlight
X
X
0%
27 mA
29 mA
100%
293 mA
492 mA
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CFA634-YFH-K*
750
700
650
600
550
500
450
400
350
300
250
Backlight at 100%
4.5v 4.6v 4.7v 4.8v 4.9v 5.0v 5.1v 5.2v 5.25v 5.4v 5.5v
VDD
42
40
38
36
34
32
30
Backlight at 0%
4.5v 4.6v 4.7v 4.8v 4.9v 5.0v 5.1v 5.2v 5.25v 5.4v 5.5v
VDD
TYPICAL
ITEMS ENABLED
CURRENT CONSUMPTION
VDD = +4.5v
VDD = +5.0v
Logic LCD Backlight
X
X
0%
32 mA
37 mA
100%
309 mA
508 mA
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ESD (ELECTRO-STATIC DISCHARGE) SPECIFICATIONS
The circuitry is industry standard CMOS logic and is susceptible to ESD damage. Please use industry standard anti-
static precautions as you would for any other static sensitive devices such as expansion cards, motherboards, or
integrated circuits. Ground your body, work surfaces, and equipment.
LED BACKLIGHT CHARACTERISTICS
Note
For CFA634-TFH-K* and CFA634-TMI-K* with white backlights, we recommend that the
display be dimmed or turned off during periods of inactivity to conserve the LEDs’ lifetime.
LED Backlight Characteristics
For CFA634 Series
Test Condition: Supply Voltage = VDD
ITEM
Luminous Intensity Through Panel
230 cd/m2
115 cd/m2
CFA634-TFH-K*
CFA634-TMI-K*
IV
TBD cd/m2
107 cd/m2
CFA634-YDI-K*
CFA634-YFH-K*
Backlight PWM Frequency2
300 Hz nominal
2PWM is Pulse Width Modulation. PWM is a way to
simulate intermediate levels by switching a level
between full on and full off. PWM can be used to con-
trol the brightness of LED backlights, relying on the
natural averaging done by the human eye, as well as
for controlling fan power.
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Page 24
OPTICAL CHARACTERISTICS
OPTICAL CHARACTERISTICS SPECIFICATIONS
CFA634-TFH-K*, CFA634-YDI-K*, and CFA634-YFH-K*
ITEM
θX+
60°
30°
40°
40°
Viewing Angle, Horizontal
CR>2
Viewing
Angle: 25°
θX-
θY+
Viewing Angle, Vertical
θY-
Contrast Ratio1
CR
4
Ta = 25°C
T rise
T fall
150 ms
120 ms
LCD Response Time2,3
1Contrast Ratio = (brightness with pixels light)/(brightness
with pixels dark).
2Response Time: The amount of time it takes a liquid crystal
cell to go from active to inactive or back again.
3For reference only.
Viewing Direction: 6 o’clock
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CFA634-TMI-K*
ITEM
θX+
θX-
θY+
θY-
40°
35°
30°
30°
Viewing Angle, Horizontal
Viewing Angle, Vertical
CR>2
Viewing
Angle: 25°
Contrast Ratio1
CR
4
Ta = 25°C
T rise
T fall
150 ms
120 ms
LCD Response Time2,3
1Contrast Ratio = (brightness with pixels light)/(brightness
with pixels dark).
2Response Time: The amount of time it takes a liquid crystal
cell to go from active to inactive or back again.
3For reference only.
Viewing Direction: 6 o’clock
OPTICAL CHARACTERISTICS TEST CONDITIONS AND DEFINITIONS
We work to continuously improve our products, including backlights that are brighter and last longer. Slight color
variations from module to module and batch to batch are normal.
Viewing Angle
Vertical (V)θ: 0°
Horizontal (H)ϕ: 0°
Frame Frequency: 78 Hz
Driving Waveform: 1/16 Duty, 1/13 Bias
Ambient Temperature (Ta): 25°C
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Definition Of Optimal Contrast Setting
CFA634-TMI-K*
And CFA634-YDI-K*
Selected Wave
100%
Non-selected Wave
CR
Maximum
Lon = Luminance of ON segments
Loff = Luminance of OFF segments
CR = Lon / Loff
Optimal Contrast Setting
Figure 4. Definition Of Optimal Contrast Setting (Negative Image)
CFA634-TFH-K*
And CFA634-YFH-K*
Selected Wave
100%
Non-selected Wave
CR
Maximum
L
Luminance of ON segments
Loofnf == Luminance of OFF segments
CR = Lon / Loff
Optimal Contrast Setting
Figure 5. Definition Of Optimal Contrast Setting (Positive Image)
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Definition Of Response Time (Tr, Tf)
CFA634-TMI-K*
And CFA634-YDI-K*
Unselected
State
Selected
State
Unselected
State
Light
Transmitted
100%
90%
10%
Light
Blocked
Tf
Tr
Tr = Rise Time
Tf = Fall Time
Figure 6. Definition Of Response Time (Tr, Tf) (Negative Image)
CFA634-TFH-K*
And CFA634-YFH-K*
Unselected
State
Selected
State
Unselected
State
Light
Transmitted
100%
90%
10%
Light
Blocked
Tf
Tr
Tr = Rise Time
Tf = Fall Time
Figure 7. Definition Of Response Time (Tr, Tf) (Positive Image)
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Definition Of 6 O'Clock And 12:00 O'Clock Viewing Angles
This display module has a 6:00 o’clock viewing angle.
Eyes look down
Eyes look up
6:00 O’Clock
Bottom Viewing Angle
12:00 O’Clock
Top Viewing Angle
Figure 8. Definition Of 6:00 O'clock And 12:00 O'Clock Viewing Angles
Definition Of Vertical And Horizontal Viewing Angles (CR>2)
Vertical
Horizontal
Figure 9. Definition Of Horizontal And Vertical Viewing Angles (CR>2)
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INTERFACE CONNECTION INFORMATION
DISPLAY MODULE PART NUMBERS FOR DEFAULT INTERFACES
The CFA634 series is shipped with the following configurations:
Part Number
CFA634-***-KC
CFA634-***-KL
CFA634-***-KN
CFA634-***-KP
CFA634-***-KS
CFA634-***-KC
Default Interface
I2C
Logic Level Serial
Logic Level Serial, Inverted
SPI
“Full Swing” RS232 Serial
USB
The hardware shipped with any of the configurations in the table above is identical.
To change the default interface for any of these display modules:
1. Change the interface selection setting using the control function Module Configuration (\009, 0x09,
Control+I) (Pg. 42).
2. Ensure the jumpers are in the correct position (see Location and Description of Jumpers To Change Interface
Type (Pg. 37)).
3. Use the connection information below.
HOW TO RESET ANY MODULE’S INTERFACE TO USB
If you aren’t sure what your module’s interface setting is, you can reset any display module to USB interface at 19200
kbps. Temporarily jumper (short) the two JPDFLT pins together while the display module is powered. The module will
display the reset screen. Cycle power to reset to the module to USB.
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Short JPDFLT pins to reset interface to USB.
Figure 10. Location Of JPDFLT Pins To Reset Interface To USB
USB POWER AND DATA COMMUNICATIONS (CFA634-***-KU)
The USB interface requires only one connection to the host for both data communications and power supply. The module
has a low profile 2 mm latching polarized connector for USB connection.
We offer three USB cables to connect between the display module and the host:
1. Use the WR-USB-Y03 (~1.94 meter) to connect the cable’s smaller 2 mm female USB connector to the display
module’s 2 mm male USB connector. Connect the cable’s larger USB-A female connector to host’s USB-A
connector.
2. Use the WR-USB-Y11 (~0.77 meter) to connect the cable’s 2 mm female USB connector to the display
module’s 2 mm male USB connector. Connect the four single pin connectors directly onto the USB headers
typically found on motherboards.
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3. Use the WR-USB-Y33 (~0.69 meter) to connect the cable’s smaller 2 mm female USB connector to the display
module’s 2 mm male USB connector. Connect the cable’s larger female 4-pin 0.1" connector to the USB pins
on your host’s motherboard
USB
+5v (red)
D- (white)
D+ (green)
Ground (black)
Figure 11. USB Connector Pins Labeled
RS232 POWER AND DATA COMMUNICATIONS (CFA634-****-KS)
The CFA634 has a male 9-pin DB9 connector that can connect to a PC’s 9-pin serial port. Below is a view looking into
the male DB9 connector (labeled J1):
CORRESPONDING PC
PIN
DB9 DISPLAY FUNCTION
Not Connected
PIN NAME
DCD (Data Carrier Detect)
Rx (Receive Data)
1
2
3
4
5
6
7
8
9
Not Connected
Data In
Tx (Transmit Data)
Power A (9 volts to 15 volts)
DTR (Data Terminal Ready)
Signal Ground
5
4
3
2
1
9
8
7
6
Ground (VSS
)
Connected to Power A if JPD is closed
Power B (9 volts to 15 volts)
Connected to Power B if JPC is closed
Not Connected
DSR (Data Set Ready)
RTS (Request To Send)
CTS (Clear To Send)
RI (Ring Indicator)
Most RS232 ports will be able to power the display module but not its backlight through their DTR and RTS lines. Have
your software drive these lines high—most software already will. As of hardware v3.0, the module includes the ability to
support, and change between, multiple interfaces as desired. This brought with it an increase in current consumption
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resulting in a greater need from the host device. To power the backlight in RS232 mode, refer to the alternate method
for powering the backlight below.
Non-Backlight Operation Through A PC’s 9-Pin Serial Port
For non-backlight operation when the module is connected to a PC’s 9-pin serial port, all you need is a “straight through”
RS232 9-pin female to female DB9 cable. Connect one of the cable’s RS232 female DB9 connectors to the DB9 male
connector on the display module. Connect the cable’s other RS232 female DB9 connector to the DB9 male connector
on your PC.
Three DB9 cables lengths are available:
1.
2.
3.
WR-232-Y01 ~1.765m
WR-232-Y04 ~2.9m
WR-232-Y10 ~315mm
Computer (typical, refer
to your user manual)
DB9 female connector
on cable
Cable Choices
DB9 male connector
WR-232-Y01 ~1.675m (~5'6")
WR-232-Y04 ~2.8m (~9'4")
WR-232-Y10 ~225mm (~8")
5
4
3
2
1
9
8
7
6
CFA634
Figure 12. Non-Backlight Operation Through 9-Pin Serial Port DB9
To connect the display module with RS232 interface to a PC expansion slot, use a WR-232-Y09 ribbon cable (~0.965
meter).
To connect a display module with RS232 to a motherboard with a 10-pin male connector with normal or alternate pinout,
use a WR-232-Y23 (~0.655 meter) cable.
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The DB9 pin serial RS232 plus DC power connector allows you to bring serial connectivity and power to another device.
A DB9 serial connection does not use all of its 9 pins in the interface with an RS232 cable. The WR-232-Y18 cable (~2.8
meter) is designed to provide a power to supply piggy-back the cable so that the previously unused pins now provide 5V
power.
LL - LOGIC LEVEL (CFA634-***-KL) AND LLI - LOGIC LEVEL, INVERTED
(CFA634-***-KN)
LL or LLi are useful when the display module is used with an embedded microcontroller’s built-in UART. These UARTs
typically output an inverted logic level (0-5 volts) version of the RS232 waveform. By setting the display module to accept
LL or LLi data, you can connect this logic level signal directly to the display module and avoid the RS232 driver
requirement.
To connect the display module to most embedded systems, you only need to use the display module’s expansion port
J2.The J2 expansion port has standard 0.1-inch (2.54 mm) spacing. Generally, you would connect a regulated 5 volt
supply for the controller to +5V(LCD), GROUND to GROUND, and module's output to MOSI. MOSI will only accept 0
volt to 3.3 volt “CMOS” or 0 volt to 5 volt logic levels. If your data is inverted, which is a common configuration of a
microcontroller “UART Tx” pin, you should configure the display module to use the LL or LLi interface.
J2 7-Pin Expansion Port For LL Or LLi Interface.
Figure 13. Location Of J2 7-Pin Expansion Port For LL Or LLi Interface
A possible J2 connector for LL or LLi communications is the Digi-Key 7-pin Molex 22-23-2071.
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To Power The Display Module Using J2 Or JPWR Expansion Port Pins
JPWR Expansion Port
Figure 14. Location Of JPWR Expansion Port
The easiest place in a PC to get +5 volts is from a disk drive power connector. The red wire is typically 5 volts and the
black wires are typically ground. The WR-PWR-Y02 cable (~0.935 meter) or the WR-PWR-Y12 cable (~320 millimeters)
will connect from a spare power connector from your PC's power supply to the display module.
Note
If you make your own cable, be sure to measure the output voltage and polarity before you connect
the display. Caution: some computers may have unconventional wire color assignments.
Note
Do not use the yellow wire of the disk drive power cable. This wire is typically the 12 volt supply and
will ruin the display and/or backlight if it is connected instead of 5 volts.
A possible connector for JPWR expansion port is the 4-pin Digi-Key Molex 22-23-2041.
SPI (CFA634-***-KP)
SPI up to 8 MHz is useful with embedded microprocessors that lack a hardware UART. On the host microprocessor, any
three general-purpose output ports and a small “send byte” routine can be used to control the display. If the host
microprocessor has a hardware SPI port, that can be used, provided that the port's speed can be set to satisfy the timing
constraints. A software state-machine and a timer interrupt could also be used, this would reduce the microprocessor's
load while still satisfying the timing requirements.
Another useful feature of SPI is that additional displays can be controlled with only one additional output port (SPI_CS)
per display. The other lines (SPI_CLK and SPI_DATA) are common. When in SPI mode, the display module will display
“SPI” instead of the baud rate on the information screen. (See Show Information Screen (\031, 0x1F,
Control+Minus) (Pg. 49).
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The display module has a 64-character input buffer. For the RS232 interface, it is nearly impossible to overflow this buffer
since the display can process commands more quickly than the 115200-baud RS232 interface can deliver them, so
normally no flow control is needed. The exceptions are the routines that access the EEPROM (the \009 series) and a
rare combination of commands that take a long time to execute, followed by a burst of characters that is larger than the
input buffer.
If your processor can deliver data through the SPI interface at a rate faster than 1000 bytes/second, then the processor
should make sure the MISO line is “low” before sending a new command. The MISO line will be held “high” by the display
module when there are 32 or more characters in the display module's input buffer, and released when there are less than
32 characters.
The SPI interface option allows the display module to communicate over the standard 4-wire SPI lines (SCLK, MOSI,
MISO, and SS). Its clock is controlled by the master and is therefore able to communicate at any of the multitude of
standard SPI data rates. The SPI interface uses Mode 3 communication in the MSB configuration. Multiple slaves can
be connected together using the master's slave select.
The display module uses Mode 3 in the diagram below.
Last byte of received data is valid
on this edge and is latched into
the RX buffer register.
Shifter is loaded with
first byte (by leading
edge of the SCLK).
First
input bit First
Shifter is
loaded with
the next byte.
latched.
shift.
SCLK (Internal)
TX REG EMPTY
RX REG FULL
SCLK (MODE 3)
User writes the first byte
to the TX buffer register.
User writes the next byte
to the TX buffer register.
Figure 15. SPI Timing Diagram
SPI_CS must be low before SPI_CLK falls.
SPI_CS must stay low for the entire transfer.
SPI_DATA must be correct before SPI_CLK falls.
SPI_DATA must be held for a minimum of 50µs after SPI_CLK falls.
The maximum clock rate is 1/55µs or 1/125 ns or 8 MHz.
Data is transferred MSB first; two out of eight cycles are shown.
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CPOL = 1, CPHA = 1 for most processors.
Take SPI_CS high for a minimum of 55µs to guarantee bit synchronization.
Maximum throughput is 1/(9 x 55) = 2020 bytes / second.
I2C (CFA634-***-KC)
The I2C interface option allows the display module to operate in slave mode supporting the 100 kbps original and 400
kbps fast mode communication speeds. Benefits to using I2C are: only two data/bus lines are required, no strict clocking
to confine your environment, and a simple master/slave relationship with multi-device support utilizing a software-
configurable address. The CFA632-***-KC has internal pull-ups of 40 kΩ to 80 kΩ that may not be sufficient in all
circumstances. We recommend that you include external pull-ups as appropriate to your application.
A possible connector for I2C expansion port is the 4-pin Digi-Key Molex 22-23-2041 loaded at J_I2C. This will also allow
the module to be powered using that header, if desired.
The display module ships by default with an I2C address of 42 . The I2C protocol specifies each module with two
10
addresses. The first 7 bits of both addresses are the same, in this case 00101010 . The address is then left bit-shifted
2
with a read bit (1) or write bit(0). If a master device wishes to write to the display module, it would transmit 01010100
2
which is 42 left bit-shifted with a 0 (84 ). If instead a master device wishes to read from the display module, it would
10
10
transmit 01010101 which is 42 left bit-shifted with a 1 (85 ).
2
10
Note
Each command byte and all applicable data bytes must be transmitted as a single “packet” in order to
be processed correctly.
J_I2C Expansion Port For 4-pin I2C connector
Figure 16. Location Of J_I2C 4-Pin Expansion Port For I2C Interface
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LOCATION AND DESCRIPTION OF JUMPERS TO CHANGE INTERFACE
TYPE
The display module’s PCB has twelve jumpers. Ten of the twelve jumpers can be changed. See the jumper table on the
next page for details.
JP2 JP1
JPBL
JP_DB9_PWR
JPC
JPD
JP5
JP3
JP6
JP4
Figure 17. Jumper Locations On Back of PCB
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To change interface type on a module, you may need to open or close certain jumpers.To close a jumper, melt solder
across the gap. To open a jumper, remove the solder. Solder wick works well for this.
Do not change factory setting on JPGPIO1 and JPUSBSNS.
SPECIFICATION
JUMPERS
THAT CAN BE
O Jumper open
CHANGED
C Jumper closed
‒ Jumper open or closed has no effect
Open: DATA_IN is RS232 (-10v to +10v swing).
Closed: DATA_IN is 0v to +5v swing.
JP3, JP4
JP5, JP6
‒
‒
O
C
C
O
C
O
C
O
Open: DATA_IN is 0v to +5v swing.
Closed: DATA_IN is RS232 (-10v to +10v swing).
Some host hardware or software may require the display to assert its DSR
and/or CTS lines before it will send data to the display.
Open:
JPC ‒ DSR is open.
JPD ‒ CTS is open.
Closed:
JPC ‒ DTR is fed back on DSR through 1K Ω resistor.
JPD ‒ RTS is fed back on CTS through 1K Ω resistor.
JPC, JPD
‒
O/C
‒
‒
‒
‒
‒
‒
Open: Disconnects USB's +5v power line from display module's +5v power
plane.
Closed: Connects USB's +5v power line to display module's +5v power
plane.
JP2
C
O
FOR ALL INTERFACES
Open: Use separate supply for logic and backlight.
JPBL Closed: Connects +5v LCD line to display module's +5v power plane to power the backlight from the same
supply as the logic.
Open: Disconnects DB9 Pins 7 and 8 from the display module's power plane.
Closed: Connects DB9 Pins 7 and/or 8 directly to the display module's +5v power plane. Closing this jumper
and connecting the module via the DB9 connector may put voltage in excess of +6v to the module and
damage it beyond repair.
JP_DB9_PWR
Open: Disconnects the JPWR header from the display module's +5v power plane.
JP1 Closed: Connects the JPWR header to the display module's +5v power plane.
Note: JPWR's +5v pin is always connected to the PsoC.
JPGPIO1 Reserved.
JPUSBSNS Reserved.
*Frameground is a trace connecting the mounting holes, bezel, and shell of the DB9.
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ALTERNATE METHOD TO POWER THE BACKLIGHT FOR NON-USB
INTERFACES
The display module's backlight brightness is controlled by PWM (Pulse Width Modulation). The PWM may cause noise
on supplies that have high output impedance. Noise from the backlight PWM can cause problems in your application.
You may want to connect a filter capacitor from +5V(LCD) to GROUND close to the display. You can also operate the
backlight at full brightness which disables the PWM.
To use the backlight in any of the following configurations requires a regulated +5 volt supply capable of sourcing 400
mA, hereby referred to as the supply. The supply can connect to any +5V(LED) terminal. This may be the same supply
that is used for +5V(LCD).
Note
Do not connect a supply greater than 5.25 volts to V or 5v(LED). If you do, you will damage the
DD
display module.
To Power The Backlight Using J2 Expansion Port Pins
To power the backlight, connect the supply to pin 3 labeled +5v(LED) on the J2 connector. The supply’s ground should
connect to the V terminal of J2 labeled GROUND, shown below.
DD
PIN PIN NAME
FUNCTION
1
2
3
GROUND
+5V(LCD)
+5V(LED)
Ground (backlight and controller)
Controller and LCD power (+5 volts only)
LED Backlight power (+5 volts only)
Master Out, Slave In
Serial Data In (input)
4
MOSI
5
6
SS
SPI Chip Select (active low input)
SPI Clock (input)
SCK
Master In, Slave Out
SPI Busy (for status output)
7
MISO
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HOST COMMUNICATIONS
Note for RS232 serial interface (CFA632-***-KS): The baud rate is set in the firmware. In previous versions of this
module, the baud rate was set with dip switches. See interface selection choices in the table in Module Configuration
(\009, 0x09, Control+I) (Pg. 42).
ABOUT HANDSHAKING
The display can generally execute commands faster than the interface can deliver them so no handshaking is nec-
essary from the display’s point of view. The few exceptions involve accessing the EEPROM (For example, see Mod-
ule Configuration (\009, 0x09, Control+I) (Pg. 42)).
For RS232 serial interface (CFA632-***-KS), some host hardware or software may require the display to assert its
DSR and/or CTS lines before it will send data to the display. In that case, JPC and/or JPD may be closed. Closing
JPC will connect DSR to DTR through a 1K Ω resistor. Closing JPD will connect CTS to RTS through a 1K Ω resis-
tor. See Jumper Locations On Back of PCB (Pg. 37).
CONTROL CODES AND THEIR FUNCTIONS
The display module will accept plain ASCII characters and display them on the screen at the current cursor position. For
example, if you send “Hello World”, the display shows “Hello World”. The display also supports a set of control characters
that access other features of the display. Some of these commands require one or more parameters. In general, the
parameters are “binary” characters, meaning that any value between 0 and 255 may be required.
The notation “\xxx” is used for “binary” data, where “xxx” is the decimal representation of the number. Use the codes \000
to \255 to include all possible values for a character. This notation is supported by our cfTest software. We recommend
you try this utility by using the examples listed under Description Of Control Functions (Pg. 41).
You can select a line of the example text by highlighting it, copy, then paste into the cfTest edit box with a right-click
“Paste”. Be sure not to highlight the invisible carriage return at the end of the line.
Below is a summary of the control codes. Click on the links in the ASCII column to jump to an explanation of the code
function.
ASCII HEX KEYSTROKES
CONTROL CODE FUNCTIONS
Not Accessible
\000 0x00
\001 0x01
\002 0x02
\003 0x03
\004 0x04
\005 0x05
\006 0x06
\007 0x07
\008 0x08
\009 0x09
‒
Control+A
Control+B
Control+C
Control+D
Control+E
Control+F
‒
Cursor Home
Hide Display
Show Display
Hide Cursor
Show Underline Cursor
Show Blinking Block Cursor with Underscore
Not Accessible
Control+H
Control+I
Backspace (Destructive)
Module Configuration
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ASCII HEX KEYSTROKES
CONTROL CODE FUNCTIONS (Continued)
Control +J
or
\010 0x0A
Line Feed
Control +Enter
\011 0x0B
\012 0x0C
\013 0x0D
\014 0x0E
\015 0x0F
\016 0x10
\017 0x11
\018 0x12
\019 0x13
\020 0x14
\021 0x15
\022 0x16
\023 0x17
\024 0x18
\025 0x19
\026 0x1A
\027 0x1B
\028 0x1C
\029 0x1D
Control+K
Control+L
Control+M
Control+N
Control+O
‒
Delete In Place
Form Feed (Clear Display)
Carriage Return
Backlight Control
Contrast Control
Not Accessible
Control+Q
Control+R
Control+S
Control+T
‒
Set Cursor Position (Column and Row)
Horizontal Bar Graph
Scroll ON
Scroll OFF
Not Accessible
‒
Not Accessible
Control+W
Control+X
Control+Y
Control Z
Escape
Control+\
‒
Wrap ON
Wrap OFF
Set Custom Character Bitmap
Reboot
Escape Sequence Prefix
Large Block Number
Not Accessible
\030 0x1E Control+Equal Send Data Directly to LCD Controller
\031 0x1F Control+Minus Show Information Screen
\128 -
Custom Characters 0 through 7
\135
DESCRIPTION OF CONTROL FUNCTIONS
Cursor Home (\001, 0x01, Control+A)
Moves cursor to the top left character position. No data is changed. Identical to Control+Q,0,0.
Hide Display (\002, 0x02, Control+B)
Display is blanked; no data is changed.
Show Display (\003, 0x03, Control+C)
Restores blanked display; nothing else is changed.
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Hide Cursor (\004, 0x04, Control+D)
Cursor is not shown; nothing else is changed.
Show Underline Cursor (\005, 0x05, Control+E)
Sets cursor to nonblinking underscore.
Show Blinking Block Cursor with Underscore (\006, 0x06, Control+F)
Sets cursor to blinking block underscore.
Backspace (\008, 0x08, Control+H)
Moves the cursor back one space and erases the character in that space. Will wrap from the left-most column to the
right-most column of the line above. Will wrap from the left-most column of the top row to the right-most column of the
bottom row. Ignores wrap.
Module Configuration (\009, 0x09, Control+I)
This command allows the current state of the display to be stored in the display's EEPROM, recalling of the EEPROM
contents to the display, and controlling the boot behavior.
All features of the display are controlled: the characters displayed, the bitmaps of the user-definable characters, the
backlight setting, the contrast setting, the cursor position, the cursor style, the wrap setting, the scroll setting, interface
selection, baud rate, data normal / inverted, and boot state.
Note
Since writing and reading the EEPROM takes quite a bit time, it is possible to overflow the display's
input buffer if data is continuously sent while the display is busy executing these commands. The
display will still buffer data while these commands are being executed. However, the buffer is 64 bytes
long and can be overflowed. You must take care to not overflow the input buffer while the EEPROM
commands are executing.
MODULE CONFIGURATION COMMANDS
Display Duration
Note:
When changing any communication settings, the selection takes
place immediately. Have proper cables ready to use before
changing interfaces.
\009\000
\000 Displays permanently.
\001 Displays until input.
You will need to reconnect at the new baud rate if using Baud
Selection (RS232 Only) or reconnect for the new address if
changing Set Slave Address (I2C Only).
\002 Displays for ~5 seconds, then is blank.
1. Connect at the current interface and/or baud rate.
2. Send command to change to new interface and/or baud rate. If
changing interface, refer to table JUMPERS THAT CAN BE
CHANGED (Pg. 38) to ensure jumpers are set appropriately.
3. Reconnect at current interface and/or baud rate.
Screen Selection
\009\001
\000 Crystalfontz display.
\001 User display (custom boot screen).
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MODULE CONFIGURATION COMMANDS (Continued)
Interface Selection
Example: Change Interface
1. Connect using the current interface (USB by default for
CFA***-***-KU, RS232 by default for CFA***-***-KS etc).
2. Send command \009\002\002 (e.g., SPI interface) using cfTest or
any other communication software.
\009\002
\000 USB
\001 “full swing” RS232 serial interface over DB9
\002 SPI
3. Disconnect the current interface.
4. Ensure jumpers JP3 and JP4 are closed and jumpers JP5 and
JP6 are open. (See Location and Description of Jumpers To
Change Interface Type (Pg. 37).)
I2C
\003
\004 LL (logic level serial)
5. Connect using the new interface.
\005 LLi (logic level serial, inverted)
Baud Selection (RS232 Only)
\009\003
Example: Change Baud Rate
Baud Selection is only applicable to RS232.
1. Ensure jumpers JP3 and JP4 are open and jumpers JP5 and JP6
are closed. See
Location and Description of Jumpers To Change Interface
Type (Pg. 37).
2. Connect using the RS232 interface.
3. Send Command \009\003\002 (9600 bps) using cfTest or any
other communication software.
\000 2400 bps
\001 4800 bps
\002 9600 bps
\003 19200 bps
\004 115200 bps
4. Reconnect at the new baud rate.
2
Set Slave Address (I C Only)
\009\004
Data[1] New Address
Save Settings
\009\005
Recall Settings
\009\006
Line Feed (\010, 0x0A, Control+J or Control+Enter)
Moves the cursor down one row. If SCROLL is on and the cursor is at the bottom row, the display will scroll up one row
and the bottom row will be cleared.
Note
If SCROLL is set, the cursor is placed on the bottom line, several Line Feed characters are sent
(forcing the display to scroll), and these Line Feeds characters are immediately followed by a burst of
more than 64 additional characters—it is possible to overflow the display's input buffer. Don't do this.
Contrary to design standards for Internet server software from our favorite software monopoly, the
display will not start executing the input buffer data as if it were code. The display will simply overwrite
the oldest data in the input buffer with the most recently received data.
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Delete In Place (\011, 0x0B, Control+K)
Deletes the character at the current cursor position. Cursor is not moved.
Form Feed (\012, 0x0C, Control+L)
Clears the display and returns cursor to Home position (upper left). All data is erased.
Carriage Return (\013, 0x0D, Control+M)
Moves cursor to the left-most column of the current row.
Backlight Control (\014, 0x0E, Control+N)
Send “Control+N”, followed by a byte from 0-100 for the backlight brightness. 0=OFF, 100=ON, intermediate values will
vary the brightness.
Examples:
\014\000
\014\050
\014\100
Contrast Control (\015, 0x0F, Control+O)
Send “Control+O”, followed by a byte from 0-100 for the contrast setting of the displayed characters.
0= very light
40= typical
100= very dark
Examples:
\015\050
\015\060
\015\070
Set Cursor Position (Column and Row) (\017, 0x11, Control+Q)
Send “Control+Q” followed by one byte for the column (0-15), and a second byte for the row (0-3). The upper-left position
is 0,0. The lower-right position is 15,1.
For example, to move the cursor to column 11 of the second line:
\017\010\001
Horizontal Bar Graph (\018, 0x18. Control+R)
Send “Control+R” followed by the following bytes:
graph_index
style
start_column
end_column
length
row
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graph_index determines which custom characters are used.
CUSTOM
CHARACTERS
USED
graph_index
\000
\001
\002
\003
0,1
2,3
4,5
6,7
style is the bit pattern to use in drawing the graph.
PATTERN
DESCRIPTION
style
\255
\000
\085
\060
\015
\240
(11111111b) thick bar
(00000000b) not visible (all pixels are off)
(01010101b) striped bar
(00111100b) medium width bar, centered
(00001111b) medium width bar, low in the row
(11110000b) medium width bar, high in the row
Any value is valid between \000 and \255. The MSB (Most Significant Bit) is at the top of the row, the LSB (Least
Significant Bit) is at the bottom of the row.
start_column and end_column are the character X coordinates of the graph area. Each must be between \000 and
\015. start_column must be less than or equal to end_column.
length is the length in pixels of the graph. Positive values will graph from the left edge of start_column, negative values
will graph from the right edge of end_column. There are six pixels per character, so the maximum value of length is 16
x 6 = \096.
row is the character Y coordinate. \000-\001 is valid.
Examples:
\018\000\255\000\014\010\001
\018\000\015\000\014\236\001
Note
The entire graph area is completely rewritten by each graph command, so there is no need to clear the
area between successive updates of the same graph. If a length of \000 is written, the entire graph
area is cleared to spaces. Negative values can be calculated as 256 - value. For instance, if you want
a graph to extend 20 pixels towards the left, from the right most column of the graph area, send 236
(256 - 20 = 236). No additional graph “setup” command is needed.
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Note
The graphs use some of the custom characters and may corrupt the display contents if there are user-
defined custom characters or large numbers shown.
Scroll ON (\019, 0x13, Control+S)
Turns scroll feature on. Then a Line Feed (Control+J) command from the bottom row will scroll the display up by one
row, independent of Wrap. If Wrap is also on (Control+W), a wrap occurring on the bottom row will cause the display to
scroll up one row. Scroll is on by default.
Scroll OFF (\020, Control+T)
Turns scroll feature off. Then a Line Feed (Control+J) command from the bottom row will move the cursor to the top row
of the same column, independent of wrap (Control+W for Wrap ON, Control+X for Wrap OFF). If wrap is on, a wrap
occurring on the bottom row will also wrap vertically to the top row. Scroll is on by default at power-up.
Wrap ON (\023, 0x17, Control+W)
Turns wrap feature on. When wrap is on, a printable character received when the cursor is at the right-most column will
cause the cursor to move down one row to the left-most column. If the cursor is already at the right-most column of the
bottom row, it will wrap to the top row if Scroll is off, or the display will scroll up one row if Scroll is on.
Wrap OFF (\024, 0x18, Control+X)
Turns wrap feature off. When wrap is off, a printable character received when the cursor is at the right-most column will
cause the cursor to disappear as it will be off the right edge of the screen. Any subsequent characters will be ignored
until some other command moves the cursor back onto the display. This function is independent of Scroll.
Set Custom Character Bitmap (\025, 0x19, Control+Y)
The custom characters are mapped at \128 through \135 corresponding to character 0 to character 7.
Send “Control+Y” followed by the following bytes:
character
data0
data1
data2
data3
data4
data5
data6
data7
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character determines which of the eight custom characters is modified. 0-7 is valid. The custom characters are
displayed by sending \128 to \135:
CUSTOM
CHARACTER
character
\128
MODIFIED
0
1
2
3
4
5
6
7
\129
\130
\131
\132
\133
\134
\135
data0-data7 are the bitmap information for this character. Any value is valid between 0 and 63. The MSB is at the
left of the character cell of the row and the LSB is at the right of the character cell. data0 is at the top of the cell,
data7 is at the bottom of the cell.
Note
The large digits use all of the custom characters, so if you modify the custom characters when large
digits are displayed, the display will probably become corrupted. The bar graphs also use some of the
custom characters.
Examples:
\012\001\128\129\130\131\017\000\001\132\133\134\135
\025\000\000\000\001\003\000\031\031\031
\025\001\028\054\032\001\003\051\051\051
\025\002\014\027\049\032\032\047\032\047
\025\003\000\000\032\048\000\062\000\062
\025\004\031\031\031\000\003\001\000\000
\025\005\051\051\051\003\001\032\054\028
\025\006\047\032\047\032\032\049\027\014
\025\007\062\000\062\000\048\032\000\000
Reboot (\026, 0x1A, Control+Z)
The firmware is stable and robust. It is unlikely that you will ever need a “reboot” command. If the firmware did crash, the
command processor would likely be inoperable and unable to detect the reboot command. However, you may have
certain situations where it is nice to have a command that will return the display to a known state. For instance, if the
baud rate on the host is set to an incorrect speed, the data is interpreted as meaningless garbage which the display
firmware tries to interpret. Some data may set the contrast to an unusable value; some data may program the LCD
controller to an indeterminate state. Or perhaps you always want the display to wake up in a given state when your
program starts, without going through all the commands that affect the way the display interprets commands (such as
the state of Scroll or Wrap, for instance).
Send one “Control+Z” followed by another “Control+Z” to reboot the display. If you are not sure of the display state, it
may be necessary to send up to 9 characters to satisfy the parameters of some previous command. For example, if the
Set Custom Character Bitmap command (See Set Custom Character Bitmap (\025, 0x19, Control+Y) (Pg. 46)) has just
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been received by the display when an application crashes, the display will interpret the next 9 bytes as the parameters
to the command, then wait for more commands. If you are not sure what the status of the display is, send 9 blanks (\032)
followed by two “Control+Z”s (\026).
For RS232 serial (CFA634-****-KS): If the display in your system is powered by the serial port's RTS and DTR lines, the
display can be rebooted by dropping those lines momentarily (for example, 500 mS) and then bringing them high again.
Escape Sequence Prefix (\027, 0x1B, Escape)
Four escape sequences are supported. These correspond to the escape sequences that are sent for the four arrows
keys in HyperTerminal with an ANSI terminal selected (and also our cfTest test and development software). These
sequences move the cursor only and do not wrap.
ESCAPE SEQUENCE
ARROW KEY
ESC [ A (equivalent to \027\091\065) UP arrow
ESC [ B (equivalent to \027\091\066) DOWN arrow
ESC [ C (equivalent to \027\091\067) RIGHT arrow
ESC [ D (equivalent to \027\091\068) LEFT arrow
Escape Sequence Prefix (\027, 0x1B, Escape)
Four escape sequences are supported. These correspond to the escape sequences that are sent for the four arrows
keys in HyperTerminal with an ANSI terminal selected (and also our cfTest test and development software). These
sequences move the cursor only and do not wrap.
ESCAPE SEQUENCE
ARROW KEY
ESC [ A (equivalent to \027\091\065) UP arrow
ESC [ B (equivalent to \027\091\066) DOWN arrow
ESC [ C (equivalent to \027\091\067) RIGHT arrow
ESC [ D (equivalent to \027\091\068) LEFT arrow
Large Block Number (\028, Control Backslash)
Send "Control+Backslash" followed by the following bytes:
style
column
number
style determines if a large number (3x4 or a 4x4) is displayed:
FUNCTION
3x4 large number
4x4 large number
invalid
style
\000
\001
\002
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column is the starting column of the number.
\000-\017 are valid for a style of \000 (3x4)
\000-\016 are valid for a style of \001 (4x4)
number is the number to display. \048 to \057 ('0' to '9') are valid.
Note
The large numbers use all the custom characters. There will be some corruption if they are used at the
same time as graphs or user defined custom characters. No large number initialization command is
needed.
Example:
\004\012\028\000\0010\028\000\0051\028\000\0092\028\000\0133\028\000\0174
\004\012\028\000\0005\028\000\0046\028\000\0087\028\000\0128\028\000\0169
\004\012\028\001\0000\028\001\0051\028\001\0102\028\001\0153
\004\012\028\001\0006\028\001\0057\028\001\0108\028\001\0159
Send Data Directly to the LCD Controller (\030, 0x1E, Control+Equal)
Send “Control+Equal” followed by the following bytes:
location
data
location is the destination register on the LCD controller:
location
\000
REGISTER
Control Register, (RS=0, RE=0)
Data Memory, (RS=1, RE=x)
\001
data is the data to write to the controller.
Note
This command executes a low level write directly to the controller. Use this command at your own risk.
“Control+Z” followed by another “Control+Z” will reboot the display and recover from most mistakes.
This command can disable or damage your display. Use this command at your own risk.
Example:
\030\002\031\030\002\130
Show Information Screen (\031, 0x1F, Control+Minus)
This function will show the baud rate for CFA632-***-KL and CFA632-***-KS. This function will show the interface mode
for CFA632-***-KC, CFA632-***-KP, and CFA632-***-KU.
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CHARACTER GENERATOR ROM (CGROM)
Figure 18. Character Generator ROM (CGROM)
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HOW TO USE CGROM
The CGROM defines which characters are shown by the display for a given code received through the interface. The
display module firmware has an enhanced CGROM that includes many useful special characters (including numeric
superscripts, icons, mathematical symbols, some fractions, a great variety of arrows, and many currency symbols).
Most of the characters can be accessed by sending the appropriate ASCII code to the display. For instance, the letter
“A” can be shown by sending an “A” (which is the same as a “decimal 65”, a “hex 0x41”, or a “\065”).
Some characters do not have an obvious match. For instance, the code to display a superscript “9” is “decimal 137”,
“hex 0x89”, or “\137”. The relationship between the codes and the characters are shown on in the Character Generator
ROM (CGROM) (Pg. 50).
To find the code for a given character, add the two numbers that are shown in bold for its row and column. For example,
the superscript “9” is in the column labeled “128d” and in the row labeled “9d”. So you would add 128 + 9 to get 137.
When you send a byte with the value of 137 to the display, then a superscript “9” will be shown at the current cursor
position.
In the CFA634 v1.0, the CGROM table had several columns that did not have any characters assigned to the codes. The
commands to control the display were mapped to some of those unused codes. These codes are shown in red in the
table. Specifically, the first 32 codes (0 to 31) are reserved for the display's special functions (cursor positioning, contrast
control, bar graphs), and the codes from 128 to 135 are used to access the custom characters.
To access the characters shown in red, it is necessary to send some data directly to the LCD controller. Send Data
Directly to the LCD Controller (\030, 0x1E, Control+Equal) (Pg. 49) allows any character in the CGROM to be displayed.
For example, if you want to display an arrow that points to the upper left, look at the table and note that it is in column
“16d”, and in row “6d”, so its code is 22 (16 + 6 = 22). Use the following sequence to display the arrow that points to the
upper left:
\030\001\022
This sequence of three bytes must be used to display any of the characters shown in red in the table. It can also be used
to access any character in the table.
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DISPLAY MODULE RELIABILITY AND LONGEVITY
Note: We work to continuously improve our products, including backlights that are brighter and last longer. Slight color
variations from module to module and batch to batch are normal.
DISPLAY MODULE RELIABILITY
ITEM
Yellow-Green LED Backlight
SPECIFICATION
50,000 to 100,000 hours
Power-On Hours
<10,000
% of Initial Brightness (New Module)
White LED Backlight
Note: We recommend that the backlights of white LED
backlit modules be dimmed or turned off during periods of
inactivity to conserve the white LED backlight lifetime.
>70%
>50%
<50,000
For modules with white LED backlights, adjust backlight brightness so the display is readable but not too bright. Dim or turn
off the backlight during periods of inactivity to conserve the white LED backlight lifetime.
Under operating and storage temperature specification limitations, humidity non-condensing RH up to 65%, and no expo-
sure to direct sunlight. Value listed above are approximate and represent typical lifetime.
DISPLAY MODULE LONGEVITY (EOL / REPLACEMENT POLICY)
Crystalfontz is committed to making all of our display modules available for as long as possible. Occasionally, a supplier
discontinues a component, or a process used to make the module becomes obsolete, or the process moves to a more
modern manufacturing line. In order to continue making the module, we will do our best to find an acceptable
replacement part or process which will make the “replacement” fit, form, and function compatible with its predecessor.
We recognize that discontinuing a module may cause problems for some customers. However, rapidly changing
technologies, component availability, or low customer order levels may force us to discontinue (“End of Life”, EOL) a
module. For example, we must occasionally discontinue a module when a supplier discontinues a component or a
manufacturing process becomes obsolete. When we discontinue a module, we will do our best to find an acceptable
replacement module with the same fit, form, and function.
In most situations, you will not notice a difference when comparing a “fit, form, and function” replacement module to the
discontinued module it replaces. However, sometimes a change in component or process for the replacement module
results in a slight variation, perhaps an improvement, over the previous design.
Although the replacement module is still within the stated Data Sheet specifications and tolerances of the discontinued
module, changes may require modification to your circuit and/or firmware. Possible changes include:
Backlight LEDs. Brightness may be affected (perhaps the new LEDs have better efficiency) or the current they
draw may change (new LEDs may have a different VF).
Controller. A new controller may require minor changes in your code.
Component tolerances. Module components have manufacturing tolerances. In extreme cases, the tolerance
stack can change the visual or operating characteristics.
Please understand that we avoid changing a module whenever possible; we only discontinue a module if we have no
other option. We publish Part Change Notices (PCN) as soon as possible.
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CARE AND HANDLING PRECAUTIONS
For optimum operation of the display module and to prolong its life, please follow the precautions described below.
Excessive voltage will shorten the life of the module. You must drive the display within the specified voltage limit. See
Absolute Maximum Ratings (Pg. 18).
HANDLING CAUTION FOR DISPLAY MODULES SHIPPED IN TRAYS
If you receive modules packed in trays, handle trays carefully by supporting the entire tray. Trays were made to
immobilize the modules inside their packing carton. Trays are not designed to be rigid. Do not carry trays by their edges;
trays and modules may be damaged.
ESD (ELECTRO-STATIC DISCHARGE) SPECIFICATIONS
The circuitry is industry standard CMOS logic and is susceptible to ESD damage. Please use industry standard anti static
precautions as you would for any other static sensitive devices such as expansion cards, motherboards, or integrated
circuits. Ground your body, work surfaces, and equipment.
DESIGN AND MOUNTING
The RockWorks RW1067 or compatible controller maintains its internal operating modes until something
happens to change it. Excessive external noise can change these internal modes. In your packaging and system
design, suppress or prevent the noise from influencing the controller. Also, refresh the operating modes
periodically to prevent the effects of unanticipated noise.
The exposed surface of the LCD “glass” is actually a polarizer laminated on top of the glass. To protect the
polarizer from damage, the display module ships with a protective film over the polarizer. Please peel off the
protective film slowly. Peeling off the protective film abruptly may generate static electricity.
The polarizer is made out of soft plastic and is easily scratched or damaged. When handling the module, avoid
touching the polarizer. Finger oils are difficult to remove.
To protect the soft plastic polarizer from damage, place a transparent plate (for example, polycarbonate or glass)
in front of the display module, leaving a small gap between the plate and the display surface. We recommend
Lexan® which is readily available and works well.
Do not disassemble or modify the module.
Do not modify the ten tabs of the metal bezel or make connections to them.
Solder only to the I/O terminals. Use care when removing solder so you do not damage the PCB. Use care when
removing solder so you do not damage the PCB. Use care to keep the exposed terminals clean. Contamination,
including fingerprints, may make soldering difficult and the reliability of the soldered connection poor.
Do not reverse polarity to the power supply connections. Reversing polarity will immediately ruin the module.
AVOID SHOCK, IMPACT, TORQUE, OR TENSION
Do not expose the module to strong mechanical shock, impact, torque, or tension.
Do not drop, toss, bend, or twist the module.
Do not place weight or pressure on the module.
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CAUTION
All electronics may contain harmful substances. Avoid contamination by using care to avoid damage during handling. If
any residues, gases, powders, liquids, or broken fragments come in contact with your skin, eyes, mouth, or lungs,
immediately contact your local poison control or emergency medical center.
HOW TO CLEAN
The polarizer will eventually become hazy if you do not take great care when cleaning it. Follow these cleaning steps:
1. Turn display off.
2. Use the removable protective film to remove smudges (for example, fingerprints) and any foreign matter. If you
no longer have the protective film, use standard transparent office tape (for example, Scotch® brand “Crystal
Clear Tape”).
3. If the polarizer is dusty, you may carefully blow it off with clean, dry, oil-free compressed air.
4. If you must clean with a liquid, never use glass cleaners, as they may contain ammonia or alcohol that will damage
the polarizer over time. Never apply liquids directly on the polarizer. Long contact with moisture may permanently
spot or stain the polarizer. Use filtered water to slightly moisten a clean lint-free microfiber cloth designed for
cleaning optics. (For example, use a cloth sold for cleaning plastic eyeglasses.) Do not use Q-tips.
5. The plastic is easily scratched or damaged. Use a light touch as you clean the polarizer. Wipe gently.
6. Use a dry microfiber cloth to remove any trace of moisture before turning on the module.
7. Gently wash the microfiber cloths in warm, soapy water and air dry before reuse.
OPERATION
Your circuit should be designed to protect the module from ESD and power supply transients.
Observe the operating temperature limitations: a minimum of -20°C to a maximum of +70°C non-condensing with
minimal fluctuation. Operation outside of these limits may shorten life and/or harm display. Changes in
temperature can result in changes in contrast.
At lower temperatures of this range, response time is delayed.
At higher temperatures of this range, display becomes dark. (You may need to adjust the contrast.)
Operate away from dust, moisture, and direct sunlight.
For the CFA634-TFH-K* and CFA634-TMI-K* with white LEDs, adjust backlight brightness so the display is
readable but not too bright. Dim or turn off the backlight during periods of inactivity to conserve the white LED
backlight lifetime.
STORAGE AND RECYCLING
Store in an ESD-approved container away from dust, moisture, and direct sunlight, fluorescent lamps, or any
strong ultraviolet radiation.
Observe the storage temperature limitations: a minimum of -30°C minimum to +80°C non-condensing maximum
with minimal fluctuations. Rapid temperature changes can cause moisture to form, resulting in permanent
damage.
Do not allow weight to be placed on the modules while they are in storage.
To discard, please recycle your modules at an approved facility.
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CFA634 Intelligent LCD Modules Hardware v3.2, Firmware v3.2
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Data Sheet Release 2015-03-30
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APPENDIX A: FREE DEMONSTRATION AND DRIVER
SOFTWARE
DEMONSTRATION SOFTWARE
Demonstration software is available for free download under the Related tab on the website page for each CFA634 part
number. Or click on the links in the software descriptions below. No registration is required for download.
cfTest
cfTest for Windows is testing and configuration software that works on all Crystalfontz Intelligent LCD modules. This
software allows you to experiment with the command set for all Crystalfontz Intelligent LCDs.
Streaming communication based modules (CFA632, CFA634) and packet communication based modules (CFA533,
CFA631, CFA633, CFA635, CFA735, CFA835) are supported. Windows (XP, Vista, 7, 8), Linux, and Mac (OSX) versions
are available.
CrystalControl2 (CC2)
For use with USB and serial interfaces. CrystalControl2 for Windows displays a great variety of varying information to a
Crystalfontz Intelligent LCD Modules in a configurable way. We provide a User Manual and support through our forum.
Linux_CLI_Examples
Linux_CLI_Examples is a Linux compatible command-line demonstration program with C source code. 8K.
BasicStamp2
For CFA634-xxx-KS. The BasicStamp2 is a simple program that demonstrates communications from a Parallax Basic
Stamp.
632/634 Boot Screen Beta Version
For CFA634-xxx-KS and CFA634-xxx-KU. 632/634 Boot Screen Beta Version allows you to change the boot screen and
boot behavior, set custom characters, and make logos using multiple custom characters. For use only with display
modules hardware v.2.4 and below.
DRIVERS
Linux Driver
See http://lcdproc.omnipotent.net for Linux LCD drivers. LCDproc is an open source project that supports many of the
Crystalfontz displays.
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USB LCD Driver
For CFA634-xxx-KU, the USB LCD Driver download has self-extracting Microsoft signed drivers for versions of Windows
from XP to current. Note: If you do Windows updates on your PC, Windows USB drivers are automatically included.
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APPENDIX B: QUALITY ASSURANCE STANDARDS
INSPECTION CONDITIONS
Environment
Temperature: 25±5°C
Humidity: 30~85% RH
For visual inspection of active display area
Source lighting: two 20 Watt or one 40 Watt fluorescent light
Display adjusted for best contrast
Viewing distance: 30±5 cm (about 12 inches)
Viewing angle: inspect at 45° angle of vertical line right and left, top and bottom
COLOR DEFINITIONS
We try to describe the appearance of our modules as accurately as possible. For the photos, we adjust for optimal
appearance. Actual display appearance may vary due to (1) different operating conditions, (2) small variations of
component tolerances, (3) inaccuracies of our camera, (4) color interpretation of the photos on your monitor, and/or (5)
personal differences in the perception of color.
DEFINITION OF ACTIVE AREA AND VIEWING AREA
102.00 Viewing Area
93.54 Active Area
128 X 8
128 X 8
128 X 8
128 X 8
DEFECTS CLASSIFICATION
Defects are defined as:
Major Defect: results in failure or substantially reduces usability of unit for its intended purpose
Minor Defect: deviates from standards but is not likely to reduce usability for its intended purpose
Crystalfontz
CFA634 Intelligent LCD Modules Hardware v3.2, Firmware v3.2
www.crystalfontz.com
Data Sheet Release 2015-03-30
Page 58
ACCEPTANCE STANDARDS
#
DEFECT TYPE
ACCEPTANCE STANDARDS CRITERIA
1
Electrical defects
1. No display, display malfunctions, or shorted segments.
2. Current consumption exceeds specifications.
Major
Major
Major
2
3
4
Viewing area defect
Viewing area does not meet specifications. (See Inspection
Conditions (Pg. 57).
Contrast adjustment
defect
Contrast adjustment fails or malfunctions.
Blemishes or foreign
matter on display seg-
ments
Blemish
Defect Size (mm)
Acceptable Qty
<0.3
3
Minor
Minor
<2 defects within 10 mm of each other
5
Other blemishes or for-
eign matter outside of
display segments
Defect Size (mm)
<0.15
Acceptable Qty
Defect size = (A + B)/2
Ignore
Length
Width
0.15 to 0.20
0.20 to 0.25
0.25 to 0.30
Defect Length (mm)
<3.0
3
2
1
6
Dark lines or scratches
in display area
Defect Width (mm)
<0.03
Acceptable Qty
3
0.03 to 0.05
0.05 to 0.08
0.08 to 0.10
>0.10
<2.0
2
Minor
<2.0
1
Length
≤3.0
0
>3.0
0
7
Bubbles between polarizer film and glass
Defect Size (mm)
<0.20
Acceptable Qty
Ignore
0.20 to 0.40
0.40 to 0.60
>0.60
3
2
0
Minor
Crystalfontz
CFA634 Intelligent LCD Modules Hardware v3.2, Firmware v3.2
www.crystalfontz.com
Data Sheet Release 2015-03-30
Page 59
#
DEFECT TYPE
ACCEPTANCE STANDARDS CRITERIA (Continued)
8
Display pattern defect
D
G
B
C
Minor
Dot Size (mm)
((A+B)/2)<0.2
Acceptable Qty
C>0
<3 total defects
<2 pinholes per digit
((D+E)/2)<0.25
((F+G)/2)<0.25
1. Light fails or flickers.*
9
Backlight defects
2. Color and luminance do not correspond to specifications.*
3. Exceeds standards for display’s blemishes or foreign matter (see test
5, Pg. 58), and dark lines or scratches (see test 6, Pg. 58).
*Minor if display functions correctly. Major if the display fails.
Minor
Minor
10 COB defects
11 PCB defects
1. Pinholes >0.2 mm.
2. Seal surface has pinholes through to the IC.
3. More than 3 locations of sealant beyond 2 mm of the sealed areas.
a<1/4W
1. Oxidation or contamination on connectors.*
2. Wrong parts, missing parts, or parts not in specification.*
3. Jumpers set incorrectly.
Minor
Minor
4. Solder (if any) on bezel, LED pad, zebra pad, or screw hole pad is
not smooth.
*Minor if display functions correctly. Major if the display fails.
12 Soldering defects
1. Unmelted solder paste.
2. Cold solder joints, missing solder connections, or oxidation.*
3. Solder bridges causing short circuits.*
4. Solder balls.
*Minor if display functions correctly. Major if the display fails.
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