CFAF240320E-022T [CRYSTAIFONTZ]
TFT DISPLAY MODULE;
| 型号： | CFAF240320E-022T |
| 厂家： | 
Crystalfontz America, Inc. |
| 描述： | TFT DISPLAY MODULE |
| 文件： | 总12页 (文件大小：289K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Crystalfontz
TFT DISPLAY MODULE DATASHEET
Datasheet Release Date 2017-11-08
for
CFAF240320E-022T
Crystalfontz America, Inc.
12412 East Saltese Avenue
Spokane Valley, WA 99216-0357
Phone: 888-206-9720
Fax: 509-892-1203
Email: support@crystalfontz.com
URL: www.crystalfontz.com
Crystalfontz
www.crystalfontz.com
CFAF240320E-022T TFT Display Module
Datasheet Release Date 2017-11-08
CONTENTS
1. General Information ............................................................................................................................3
2. Module Description .............................................................................................................................4
3. Features ..............................................................................................................................................4
4. Mechanical Data .................................................................................................................................4
5. Mechanical Drawings..........................................................................................................................5
6. Interface Pin Function .........................................................................................................................7
7. System Block Diagram........................................................................................................................8
8. Absolute Maximum Ratings ................................................................................................................8
9. Electrical Characteristics.....................................................................................................................8
10. Optical Characteristics ......................................................................................................................9
11. Backlight Characteristics...................................................................................................................9
12. LCD Module Precautions ................................................................................................................10
Page | 2
Crystalfontz
www.crystalfontz.com
CFAF240320E-022T TFT Display Module
Datasheet Release Date 2017-11-08
1. General Information
Datasheet Revision History
Datasheet Release: 2017-11-08
Datasheet for the CFAF240320E-022T TFT graphic display module.
Product Change Notifications
You can check for or subscribe to Part Change Notices for this display module on our website.
Variations
Slight variations between lots are normal (e.g., contrast, color, or intensity).
Volatility
This display module has volatile memory.
Disclaimer
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 datasheets 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 © 2017 by Crystalfontz America, Inc.,12412 East Saltese Avenue, Spokane Valley, WA 99216
U.S.A.
Page | 3
Crystalfontz
www.crystalfontz.com
CFAF240320E-022T TFT Display Module
Datasheet Release Date 2017-11-08
2. Module Description
This is a 2.2-inch diagonal full color TFT graphic display module with a white LED backlight. This
display has a built-in Sitronix ST7789V controller.
Please see Sitronix ST7789V LCD Controller Datasheet for further reference.
3. Features
• 240*320 Dot Matrix
• +3.3V Power Supply
• Display Colors: 262K
• Built-in Controller: ST7789V (or equivalent)
• Viewing Direction: 6 o’clock
• Operating Temperature: -20°C to +70°C
• Storage Temperature: -30°C to +80°C
• Interface: 8-Bit Parallel
4. Mechanical Data
Specification
(mm)
Specification
(inch, reference)
Item
Overall Module Dimension
Viewing Area
41.70 (W) x 56.16 (H) x 2.6 (D)
35.44 (W) x 46.72 (H)
33.84 (W) x 45.12 (H)
0.141 (W) x 0.141 (H)
10 grams
1.642 (W) x 2.211 (H) x 0.102 (D)
1.395 (W) x 1.839 (H)
1.332 (W) x 1.776 (H)
0.006 (W) x 0.006 (H)
0.35 ounces
Active Area
Dot Pitch
Weight (Typical)
Page | 4
Crystalfontz
www.crystalfontz.com
CFAF240320E-022T TFT Display Module
Datasheet Release Date 2017-11-08
5. Mechanical Drawings
Page | 5
Crystalfontz
www.crystalfontz.com
CFAF240320E-022T TFT Display Module
Datasheet Release Date 2017-11-08
Page | 6
Crystalfontz
www.crystalfontz.com
CFAF240320E-022T TFT Display Module
Datasheet Release Date 2017-11-08
6. Interface Pin Function
Pin
1
Symbol
NC
I/O
Function
P
Ground
Ground
2
GND
3
IOVCC
Chip Select Signal
Low: Chip can be accessed.
High: Chip cannot be accessed.
4
CS
Fix this pin at VCI or GND when not in use.
5
6
RS
Data/Command Selection Pin.
MCU interface mode select
WR
I
I
Read Enable in 8080 MCU parallel interface.
When not in use, connect to VDD.
7
RD
8
NC
NC
No Connection
9
No Connection
10
11
12
13
14
15
16
17
18
19
NC
No Connection
NC
No Connection
NC
No Connection
LEDA1
LEDA2
LEDA3
LEDK
NC
Anode pin of backlight
Anode pin of backlight
Anode pin of backlight
Cathode pin of backlight
No Connection
I/O
I/O
NC
No Connection
NC
I
I
No Connection
8-bit parallel bi-directional data bus for MCU interface mode.
Fix to GND when not in use.
20-27
28
DB0-DB7
RESET
Reset Pin.
I
Setting pin low initializes the LSI. Must be reset after power is supplied.
29
30
31
32
VCI
VCI
GND
NC
I
Supply Voltage (3.3v)
Supply Voltage (3.3v)
Ground
P
P
P
No Connection
Page | 7
Crystalfontz
www.crystalfontz.com
CFAF240320E-022T TFT Display Module
Datasheet Release Date 2017-11-08
7. System Block Diagram
8. Absolute Maximum Ratings
Parameter
Symbol
Min
Max
Unit
Notes
Digital Supply Voltage
VDD
-0.3
4.6
V
(1)(2)
Digital Interface Supply Voltage
Operating Temperature
Storage Temperature
VDDIO
TOP
-0.3
-20
-30
V
(1)(2)
4.6
+70
+80
°C
°C
-
-
TST
Notes:
(1) These are stress ratings only. Extended exposure to the absolute maximum ratings listed above
may affect device reliability or cause permanent damage.
(2) Functional operation should be restricted to the limits in the Electrical Characteristics table below.
9. Electrical Characteristics
Item
Symbol
Min
Typ
Max
Unit
Digital Supply Voltage
VDD
2.4
3.3
4.0
V
V
Digital Interface Supply Voltage
VDDIO
IDD
1.65
-
3.3
7
4.0
-
Normal Mode Current Consumption
mA
VIH
VIL
0.7 VDDIO
GND
-
-
-
-
VDDIO
0.3 VDDIO
VDDIO
V
V
V
V
Level Input Voltage
Level Output Voltage
VOH
VOL
0.8 VDDIO
GND
0.2 VDDIO
Page | 8
Crystalfontz
www.crystalfontz.com
CFAF240320E-022T TFT Display Module
Datasheet Release Date 2017-11-08
10. Optical Characteristics
Item
Symbol
Condition
Min
Typ
Max
Unit
Transmittance
T(%)
-
5.5
6.0
-
%
Contrast Ratio (CR)
Response Time
NTSC
CR
θ=0
25°C
-
250
350
20
-
30
-
%
ms
%
TON
-
-
TOFF
S(%)
48
Wx
Wy
Rx
Ry
Gx
Gy
Bx
By
0.253
0.309
0.581
0.265
0.261
0.478
0.081
0.119
40
0.303
0.359
0.631
0.315
0.311
0.528
0.131
0.169
45
0.353
0.409
0.681
0.365
0.361
0.578
0.181
0.219
-
ms
ms
ms
ms
ms
ms
ms
Ms
-
White Chromaticity
Red Chromaticity
Green Chromaticity
Blue Chromaticity
C-light
θL
θR
θT
θB
Horizontal
40
45
-
-
Viewing Angle
CR>10
45
50
-
-
Vertical
15
20
-
-
Viewing Direction
6 o’clock
11. Backlight Characteristics
Item
Symbol
Min
Typ
Max
Unit
Forward Current
(IF)
-
45
3.2
60
mA
Forward Voltage
LED Lifetime
(VF)
Hr.
-
-
-
-
V
50K
Hr.
Notes:
(1) Supply current minimum value is only for reference since the LED brightness efficiency keeps enhancing.
Current consumption becomes less and less to achieve the same luminance.
(2) Lifetime is defined as the amount of time when the luminance has decayed to <50% of the initial value (50K
hours is an estimate for reference only).
Page | 9
Crystalfontz
www.crystalfontz.com
CFAF240320E-022T TFT Display Module
Datasheet Release Date 2017-11-08
12. LCD Module Precautions
The precautions below should be followed when using LCD modules to help ensure personal safety,
module performance, and compliance of environmental regulations.
12.1. Modules
• Avoid applying excessive shocks to module or making any alterations or modifications to it.
• Do not make extra holes on the printed circuit board, modify its shape or change the
components of LCD display module.
• Do not disassemble the LCD display module.
• Do not operate the LCD display module above the absolute maximum rating.
• Do not drop, bend or twist the LCD display module.
• Soldering: only to the I/O terminals.
• Store in an anti-static electricity container and clean environment.
• It is common to use the "screen saver" to extend the lifetime of the LCD display module.
o Do not use the fixed information for long periods of time in real application.
o Do not use fixed information in LCD panel for long periods of time to extend "screen
burn" effect time.
• Crystalfontz has the right to change the passive components, including R3, R6 & backlight
adjust resistors. (Resistors, capacitors and other passive components will have different
appearance and color caused by the different supplier.)
• Crystalfontz have the right to change the PCB Rev. (In order to satisfy the supplying stability,
management optimization and the best product performance, etc., under the premise of not
affecting the electrical characteristics and external dimensions, Crystalfontz has the right to
modify the version.).
12.2. Handling Precautions
• Since the display panel is made of glass, do not apply mechanical impacts such as dropping
from a high position.
• If the display panel is accidently broken, and the internal organic substance leaks out, be
careful not to inhale or touch the organic substance.
• If pressure is applied to the display surface or its neighborhood of the LCD display module, the
cell structure may be damaged, so be careful not to apply pressure to these sections.
• The polarizer covering the surface of the LCD display module is soft and can be easily
scratched. Please be careful when handling the LCD display module.
• Clean the surface of the polarizer covering the LCD display module if it becomes soiled using
following adhesion tape.
o Scotch Mending Tape No. 810 or an equivalent
o Never breathe the soiled surface or wipe the surface using a cloth containing solvent
such as ethyl alcohol, since the surface of the polarizer will become cloudy.
o The following liquids/solvents may spoil the polarizer:
-
-
-
Water
Ketone
Aromatic Solvents
• Hold the LCD display module very carefully when placing the LCD display module into the
system housing.
• Do not apply excessive stress or pressure to the LCD display module. And, do not over bend
the film with electrode pattern layouts. These stresses will influence the display performance.
Also, be sure to secure the sufficient rigidity for the outer cases.
Page | 10
Crystalfontz
www.crystalfontz.com
CFAF240320E-022T TFT Display Module
Datasheet Release Date 2017-11-08
• Do not apply stress to the LSI chips and the surrounding molded sections.
• Do not disassemble or modify the LCD display module.
• Do not apply input signals while the logic power is off.
• Pay sufficient attention to the working environments when handing the LCD display module to
prevent occurrence of element breakage accidents by static electricity.
o Be sure to make human body grounding when handling LCD display modules.
o Be sure to ground tools to use for assembly such as soldering irons.
o To suppress generation of static electricity, avoid carrying out assembly work under
dry environments.
o Protective film is being applied to the surface of the display panel of the LCD display
module. Be careful since static electricity may be generated when exfoliating the
protective film.
• Protection film is being applied to the surface of the display panel and removes the protection
film before assembling it. At this time, if the LCD display module has been stored for a long
period of time, residue adhesive material of the protection film may remain on the surface of
the display panel after the film has been removed. In such a case, remove the residue material
by the method discussed above.
• If electric current is applied when the LCD display module is being dewed or when it is placed
under high humidity environments, the electrodes may become corroded. If this happens
proceed with caution when handling the LCD display module.
12.3. Storage Precautions
• When storing the LCD display modules put them in static electricity preventive bags to avoid
exposure to direct sunlight and fluorescent lamps. Also avoid high temperature and high
humidity environments and low temperatures (less than 0°C) environments. (We recommend
you store these modules in the packaged state when they were shipped from Crystalfontz). Be
careful not to let water drops adhere to the packages or bags, and do not let dew gather on
them.
• If electric current is applied when water drops are adhering to the surface of the LCD display
module the LCD display module may have become dewed. If a dewed LCD display module is
placed under high humidity environments it may cause the electrodes to become corroded. If
this happens proceed with caution when handling the LCD display module.
12.4. Designing Precautions
• The absolute maximum ratings are the ratings that cannot be exceeded for LCD display
module. If these values are exceeded, panel damage may happen.
• To prevent occurrence of malfunctioning by noise pay attention to satisfy the VIL and VIH
specifications and, at the same time, to make the signal line cable as short as possible.
• We recommend that you install excess current preventive unit (fuses, etc.) to the power circuit
(VDD). (Recommend value: 0.5A)
• Pay sufficient attention to avoid occurrence of mutual noise interference with the neighboring
devices.
• As for EMI, take necessary measures on the equipment side.
• When fastening the LCD display module, fasten the external plastic housing section.
• If the power supply to the LCD display module is forcibly shut down, by such errors as taking
out the main battery while the LCD display panel is in operation, we cannot guarantee the
quality of this LCD display module.
o Connection (contact) to any other potential than the above may lead to rupture of the
IC.
12.5. Precautions When Disposing of the LCD Display Modules
• Request the qualified companies to handle the industrial wastes when disposing of the LCD
display modules. Or, when burning them, be sure to observe the environmental and hygienic
laws and regulations.
12.6. Other Precautions
• When an LCD display module is operated for a long period of time with a fixed pattern, the
fixed pattern may remain as an after image or a slight contrast deviation may occur.
Page | 11
Crystalfontz
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CFAF240320E-022T TFT Display Module
Datasheet Release Date 2017-11-08
o If the operation is interrupted and left unused for a while, normal state can be
restored.
o This will not cause a problem in the reliability of the module.
• To protect the LCD display module from performance drops by static electricity rapture, etc., do
not touch the following sections whenever possible while handling the LCD display modules.
o Pins and electrodes
o Pattern layouts such as the TCP & FPC
• With this LCD display module, the LCD driver is being exposed. Generally speaking,
semiconductor elements change their characteristics when light is radiated according to the
principle of the solar battery. Consequently, if this LCD driver is exposed to light,
malfunctioning may occur.
o Design the product and installation method so that the LCD driver may be shielded
from light in actual usage.
o Design the product and installation method so that the LCD driver may be shielded
from light during the inspection processes.
• Although this LCD display module stores the operation state data by the commands and the
indication data, when excessive external noise, etc. enters into the module, the internal status
may be changed. Therefore, it is necessary to take appropriate measures to suppress noise
generation or to protect from influences of noise on the system design.
• We recommend that you construct its software to make periodical refreshment of the operation
statuses (re-setting of the commands and re-transference of the display data), to cope with
catastrophic noise.
• Resistors, capacitors, and other passive components will have different appearance and color
caused by the different supplier.
• Crystalfontz has the right to upgrade and modify the product function.
• The limitation of FPC bending:
Page | 12
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