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TFT GRAPHIC DISPLAY MODULE DATASHEET Datasheet Release Date 2019-06-12 for CFAF128128B1-0145T 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

www.crystalfontz.com CFAF128128B1-0145T TFT Display Module Datasheet Release Date 2019-06-12 Page | 2

CONTENTS

www.crystalfontz.com CFAF128128B1-0145T TFT Display Module Datasheet Release Date 2019-06-12 Page | 3 1. General Information Datasheet Revision History Datasheet Release: 2017-10-30 Datasheet for the CFAF128128B1-0145T TFT graphic display module. Datasheet Release: 2019-06-12 Better drawing, better block diagram, revised handling. 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.

www.crystalfontz.com CFAF128128B1-0145T TFT Display Module Datasheet Release Date 2019-06-12 Page | 4 2. Module Description This is a full color TFT graphic display module with a white LED backlight, TFT panel, integrated controller/driver, and a FPC tail. This display requires only a single source for both power supply and logic. This display module has a built-in Sitronix ST7735S, 262K Color Single-Chip TFT Controller. Please see Sitronix ST7735S LCD Controller Datasheet for further reference. 3. Features

  • 128*128 Dot Matrix
  • +3V Power Supply
  • Viewing Direction: 6 o’clock
  • Built-in Controller: Sitronix ST7735S (or equivalent)
  • Operating Temperature: -10°C to +60°C
  • Storage Temperature: -20°C to +60°C
  • Interface: SPI 4. Mechanical Data Item Specification (mm) Specification (inch, reference) Overall Module Dimension Overall Module Dimension Active Area 25.498 (W) x 26.496 (H) 1.004 (W) x 1.043 (H) Dot Pitch 0.199 (W) x 0.207 (H) 0.007 (W) x 0.008 (H) Weight (Typical) 4.4 grams 0.16 ounces

© 2019 Crystalfontz America, Inc. Crystalfontz Sheet:Web: Revision:Filename:Date:Project / Part Number: 1 of 1https://www.crystalfontz.com/product/cfaf128128b10145t -CFAF128128B1-0145T_Mechanical.pdf2019-06-12 CFAF128128B1-0145T CRYSTALFONTZ CFAF128128B1-0145T A K R G B CFAF128128B1-0145T Pixel Detail (50x) Backlight circuit Pin Function A (LED+) K (LED-) SPI4 / nSPI3 Vcc Ground nCS nRST MOSI SCK D / nC Diagonal size: 1.44” or 1.45” (actual is ~1.4477) Viewing direction: 6 O’clock (12 O’clock inverts) Operating temperature: -10°C to +60°C Storage temperature: -10°C to +60°C Controller: ST7735S Tolerance: ±0.3 mm unless otherwise specified. Mating connector: 10-position, 0.5mm Gold contact area Top or bottom contact side as required by your application Possible candidates: Top: Amphenol ICC (FCI) SFV10R-2STBE1HLF Bottom: TE Connectivity AMP Connectors 1-1734592-0

www.crystalfontz.com CFAF128128B1-0145T TFT Display Module Datasheet Release Date 2019-06-12 Page | 6 6. System Block Diagram

www.crystalfontz.com CFAF128128B1-0145T TFT Display Module Datasheet Release Date 2019-06-12 Page | 7 7. Interface Pin Function Pin Symbol Function 1 A (LED+) Common supply pin for LED. “A” (anode) or “+” for LED backlight. 2 K (LED-) Individual supply pin for LED. “K” (cathode for German or original Greek spelling) or “-“ of LED backlight.

3 SPI4W / SPI3W

0 3-wire, 9-bit SPI mode. The D/C pin is not used. The 9th SPI bit selects the data or command register. 1 4-wire, 8-bit SPI mode. The D/C pin is used to select the data or command register. 4 VLOGIC I/O Digital Logic Supply and Input/Output Supply (3.0-3.6) 5 GND Ground. Must be connected to an external ground. 6 CS Chip Select Input. Low: Controller chip is selected. Communications with host is possible. High: Controller chip is not selected. Host interface signals are ignored by the controller.

7 RST

Controller hardware reset pin, active low. On power on, drive RST low for at least 10μS. After RST is returned to high, wait 120mS for the internal reset operation to complete. Keep RST driven high for normal operation.

8 SDA Serial data, in or out (bi-directional)

9 SCK Serial Clock – rising edge.

10 D/C

In 4-wire, 8-bit SPI mode, the D/C pin is used to select the data or command register. 1 – High: Addresses the data register. 0 – Low: Addresses the command register. In 3-wire, 9-bit SPI mode, the D/C pin is not used. Please connect it to VLOGIC I/O. 8. Absolute Maximum Ratings Parameter Symbol Min Typ Max Unit Notes Supply Voltage for Logic VDD -0.3 - +4.6 V (1)(2)(3) Operating Temperature TOPR -10 - +60 °C - Storage Temperature TSTG -20 - +60 °C - 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) TA=25°C, VSS=0V (3) Functional operation should be restricted to the limits in the DC Characteristics table below.

www.crystalfontz.com CFAF128128B1-0145T TFT Display Module Datasheet Release Date 2019-06-12 Page | 8 9. Electrical Characteristics TA=25°C, VSS=0V Item Symbol Condition Min Typ Max Unit Supply Voltage for Logic VDD TA=25°C 3.0 3.3 3.6 V Supply Voltage for LCM IDD VDD=3.3v - 1.7 2.55 mA Input High Voltage VIH - 0.7 x VDD - VDD V Input Low Voltage VIL - VSS - 0.3 x VDD V 10. Optical Characteristics Item Symbol Condition Min Typ Max Unit Notes Transmittance T - - 6.0 - % - Contrast Ratio CR Ɵ=0 Normal Viewing Angle - 350 - - (1)(2) Response Time T rise - - 25 - ms (1)(3) T fall Red Chromaticity x θ=Φ=0° LED Backlight 0.5304 0.5804 0.6304 ms - y 02934 0.3434 0.3934 ms - Green Chromaticity x 0.2418 0.2918 0.3418 ms - y 0.5265 0.5765 0.6265 ms - Blue Chromaticity x 0.0918 0.1418 0.1918 ms - y 0.0316 0.0816 0.1316 ms - White Chromaticity x 0.1881 0.2381 0.2881 ms - y 0.2293 0.2693 0.3293 ms - Viewing Angle (Horizontal) θX+ CR≧10 - 45 - deg - θY- - 45 - deg - Viewing Angle (Vertical) θX+ - 35 - deg - θY- - 15 - deg - Viewing Direction 6 o’clock Notes: (1) Measuring Surrounding: Dark Room (2) Ambient Temperature: 25 ± 2°C (3) Warm Up Time: 30-Minutes

www.crystalfontz.com CFAF128128B1-0145T TFT Display Module Datasheet Release Date 2019-06-12 Page | 9 11. Timing Characteristics 11.1. Serial Interface Characteristics (3-line serial)

www.crystalfontz.com CFAF128128B1-0145T TFT Display Module Datasheet Release Date 2019-06-12 Page | 10 11.2. Serial Interface Characteristics (4-line serial)

www.crystalfontz.com CFAF128128B1-0145T TFT Display Module Datasheet Release Date 2019-06-12 Page | 11 12. Backlight Characteristics Item Condition Symbol Min Typ Max Unit Supply Current V=3.2v I - 20 - mA Supply Voltage IF=20mA V 2.7 3.0 3.3 V Luminous Intensity for LCM IV 120 180 - cd/m2 Uniformity for LCM - 70 - - % LED Lifetime - 20K - - Hr. Color White 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 (20K hours is an estimate for reference only).

www.crystalfontz.com CFAF128128B1-0145T TFT Display Module Datasheet Release Date 2019-06-12 Page | 12 13. 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. 13.1. 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.
  • Do not solder. Use only an appropriate ZIF connector designed for FPC.
  • ZIF connector should have gold flash contacts to maximize reliability/
  • Store in an anti-static electricity container and clean environment.
  • Crystalfontz may change passive components -- resistors, capacitors and other passive components may have different appearance and color due to different suppliers.
  • Crystalfontz may change the flex PCB revision. An appropriate PCN will be issued if there is change to the form, fit or function. You can subscribe to PCNs on the module’s web page. 13.2. Handling Precautions
  • Since the display panel is made of glass, do not apply mechanical impacts or drop it.
  • 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.
  • Do not use any solvents (even water) to clean the LCD’s polarizer. Using a cloth to rub the polarizer can cause small scratches that may reduce performance.
  • If you need to clean the LCD’s front surface, you can carefully apply and remove normal office tape. The contaminates will adhere to the tape and be removed from the LCD’s polarizer.
  • Ensure that your mounting secures the LCD and protects it from mechanical stresses
  • The LCD module is sensitive to ESD. Treat the LCD module as you would a bare IC. Us e appropriate ESD precautions when handling.
  • Observe humidity limits. Do not operate the LCD if there is condensation.f
  • Do not make sharp bends in the FPC (Flexible Printed Circuit). Observe the following diagram:
  • Dispose of this module -- and any electronics -- properly. Do not place in the normal trash. Check with your local disposal company for procedures to recycle or dispose of electronics.