Touch Controller. GT911 Datasheet

GT911 Controller. Datasheet pdf. Equivalent

GT911 Datasheet
Recommendation GT911 Datasheet
Part GT911
Description 5-Point Capacitive Touch Controller
Feature GT911; .
Manufacture GOODIX
Datasheet
Download GT911 Datasheet




GOODIX GT911
GT911: 5-Point Capacitive Touch Controller for Small-Sized MID
GT911
5-Point Capacitive Touch Controller for
Small-Sized MID
Rev.09——March 11, 2015
====== Disclaimer ======
The information concerning the device in this publication is intended for you only and is subject
to change without prior notice. It is your responsibility to ensure its application complies with
technical specifications. Shenzhen Huiding Technology Co., Ltd. (hereafter referred to as
“GOODIX”) makes no representation or guarantee for this information, either expressed or
implied, written or verbal, statutory or otherwise including but not limited to representation or
guarantee for its application, quality, performance, merchantability or fitness for a particular
purpose. GOODIX shall assume no responsibility for this information and relevant consequences
arising out of the use of such information. Without written consent of GOODIX, it is prohibited to
use GOODIX products as critical components in any life support system. This document conveys
no licenses, implicitly or otherwise, to any intellectual property rights belonging to GOODIX or
any other entities.
GOODIX CONFIDENTIAL
Reproduction and/or distribution of this document in whole or in
part is strictly prohibited without written consent of GOODIX.
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GOODIX GT911
GT911: 5-Point Capacitive Touch Controller for Small-Sized MID
Contents
1. Overview........................................................................................................................................................ 4
2. Features.........................................................................................................................................................4
3. Block Diagram...............................................................................................................................................5
4. Pin Configurations........................................................................................................................................6
5. Sensor Design.............................................................................................................................................. 7
5.1 Layout of Rx Channels........................................................................................................................7
5.2 Layout of Tx Channels........................................................................................................................ 7
5.3 Sensor Design Specifications............................................................................................................ 7
5.4 Touch Key Design................................................................................................................................ 8
6. I2C Communication...................................................................................................................................... 9
6.1 I2C Timing.......................................................................................................................................... 9
a) Data Transmission..................................................................................................................... 11
b) Writing Data to GT911............................................................................................................... 11
c) Reading Data from GT911....................................................................................................... 12
7. HotKnot Mode.............................................................................................................................................13
7.1 Start HotKnot...................................................................................................................................... 13
7.2 Data Transmission between TPs.....................................................................................................13
7.3 Host Receives Data from GT911.....................................................................................................13
8. Description on Functions.......................................................................................................................... 14
8.1 Operating Modes............................................................................................................................14
a) Normal Mode.............................................................................................................................. 14
b) Green Mode................................................................................................................................ 15
c) Gesture Mode.............................................................................................................................15
GOODIX CONFIDENTIAL
Reproduction and/or distribution of this document in whole or in
part is strictly prohibited without written consent of GOODIX.
2



GOODIX GT911
GT911: 5-Point Capacitive Touch Controller for Small-Sized MID
d) Sleep Mode.................................................................................................................................15
e) Approach Mode..........................................................................................................................15
f) Receive Mode.............................................................................................................................16
g) Send Mode..................................................................................................................................16
8.2 Interrupt Triggering Mechanism...................................................................................................16
8.3 Sleep Mode.....................................................................................................................................17
8.4 Stationary Configuration............................................................................................................... 17
8.5 Adaptive Frequency Hopping...................................................................................................... 17
8.6 Self-calibration................................................................................................................................17
a) Self-calibration during Initialization......................................................................................... 17
b) Automatic Drift Compensation.................................................................................................17
9. Sample Schematic.....................................................................................................................................18
10. Electrical Characteristics.................................................................................................................. 19
10.1 Absolute Maximum Ratings......................................................................................................... 19
10.2 Recommended Operating Conditions........................................................................................ 19
10.3 AC Electrical Characteristics........................................................................................................19
10.4 DC Electrical Characteristics....................................................................................................... 20
11. Package...............................................................................................................................................21
12. Revision History................................................................................................................................. 22
13. Contact Information........................................................................................................................... 23
GOODIX CONFIDENTIAL
Reproduction and/or distribution of this document in whole or in
part is strictly prohibited without written consent of GOODIX.
3







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