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GT970 Datasheet Preview

GT970 Datasheet

Capacitive touch chip functions

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HotKnot 系列 GT970
GT970
带有 HotKnot 功能的电容触控芯片
Rev.01——2014 03 05
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应用符合技术规范,是您自身应负的责任。GOODIX对这些信息不作任何明示或暗示、书面或口头、
法定或其他形式的声明或担保,包括但不限于针对其使用情况、质量、性能、适销性或特定用途的
适用性的声明或担保。GOODIX 对因这些信息及使用这些信息而引起的后果不承担任何责任。未
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GOODIX

GT970 Datasheet Preview

GT970 Datasheet

Capacitive touch chip functions

No Preview Available !

HotKnot 系列 GT970
目录
1. 概述 ....................................................................................................................................4
2. 产品特点 ............................................................................................................................4
3. 芯片原理图 ........................................................................................................................5
4. 管脚定义 ............................................................................................................................6
5. 传感器设计 ........................................................................................................................8
5.1. 感应通道排布 ......................................................................................................8
5.2. 驱动通道排布 ......................................................................................................8
5.3. 传感器设计参数要求 ..........................................................................................9
5.4. 触摸按键设计 ......................................................................................................9
6. I2C 通讯............................................................................................................................10
6.1. I2C 通讯..............................................................................................................10
a) 数据传输 .....................................................................................................12
b) GT970 写操作.......................................................................................12
c) GT970 读操作..............................................................................................13
7. HotKnot 模式 ...................................................................................................................14
7.1. 启动 HotKnot ..........................................................................................................14
7.2. TP 间数据传输 .........................................................................................................14
7.3. CPU GT970 接收数据 .......................................................................................14
8. 功能描述 ..........................................................................................................................15
8.1. 工作模式 ............................................................................................................15
a) Normal Mode .............................................................................................15
b) Green Mode...............................................................................................15
c) Gesture mode...................................................................................................16
d) Sleep Mode................................................................................................16
e) Approach Mode.........................................................................................16
f) Receive Mode...................................................................................................17
g) Send Mode.................................................................................................17
8.2. 灵敏度状态切换 ................................................................................................17
a) Normal 状态(正常灵敏度) ...................................................................17
b) High 状态(高灵敏度)............................................................................18
c) Detect 状态........................................................................................................18
d) 手套材质 .....................................................................................................18
8.3. 中断触发方式 ....................................................................................................18
8.4. 固化配置功能 ....................................................................................................18
8.5. 跳频功能 ............................................................................................................18
8.6. 自动校准 ............................................................................................................19
a) 初始化校准 .................................................................................................19
b) 自动温漂补偿 .............................................................................................19
9. 参考电路图 ......................................................................................................................20
10. 电气特性 ...................................................................................................................21
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Part Number GT970
Description Capacitive touch chip functions
Maker GOODIX
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