TTP229 16通道触摸检测器IC
TTP229是8至16通道触摸检测器IC，可以用作8至16触摸键驱动器。用传统按钮键替换时，这是一个有用的设备。它有一个low power consumptionwith a wide range of operating voltage. The major advantage of TTP229 is that it could replace the standard 8-key matrix keypad.
它有一个n auto-calibration feature for life and it has a re-calibration period of about 4.0 seconds. The sensitivity can be adjusted using an external capacitor of 0 to 50 pF. 16 or 8, whatever inputs are used, the IC features fewer component counts during the integration in the system.
PIN描述TTP229
Pin Number |
Pin Name |
描述 |
1 |
- |
- |
2 |
- |
- |
3 |
- |
- |
4 |
- |
- |
5 |
Slpsena |
组A的睡眠模式敏感性调节引脚（TP0-7） |
6 |
TP3 |
A touchpad input pin (KEY-3) 键操作功能选项1（单键/多键） Default is all single key |
7 |
- |
- |
8 |
TP2 |
A touchpad input pin (KEY-2) 钥匙号函数选项（8键/16键） Default is all 8-keys |
9 |
SENADJ0 |
Touchpad TP0-3 sensitivity adjust common pin |
10 |
TP1 |
A touchpad input pin (KEY-1) Output type function option (Active high/low) Default is active high FOR TPQ0~7, active low for 2-wires serial type (SCL/SDO) |
11 |
TP0 |
A touchpad input pin (KEY-0) 输出类型功能选项（coms/od/oc for 8-keys） 默认值为coms |
12 |
TP15 |
A touchpad input pin (KEY-15) 8键直接输出引脚（TPQ7） |
13 |
TP14 |
A touchpad input pin (KEY-14) 8键直接输出引脚（TPQ6） |
14 |
SENADJ3 |
Touchpad TP12-15 sensitivity adjust common pin |
15 |
- |
- |
16 |
TP13 |
A touchpad input pin (KEY-13) 8键直接输出引脚（TPQ5） |
17 |
- |
- |
18 |
TP12 |
A touchpad input pin (KEY-12) 8键直接输出引脚（TPQ4） |
19 |
- |
- |
20 |
SDA |
1-C总线串行数据接口的数据引脚 |
21 |
SDO |
Data pin for the 2-wires serial output, option active Low/High by TPI |
22 |
Spl |
串行类型的串行时钟输入引脚 At 2-wires serial type can be set active Low/High by TPI |
23 |
Slpsenb |
睡眠模式灵敏度调整引脚 B组（TP8-15） |
24 |
TP11 |
Touchpad input pin (KEY-11) 8键直接输出引脚（TPQ3） |
25 |
TP10 |
Touchpad input pin (KEY-10) 8-keys direct output pin (TPQ2) |
26 |
SENADJ2 |
触摸板TP8-11灵敏度调整常见销 |
27 |
TP9 |
触摸板输入引脚（键09） 8-keys direct output pin (TPQ1) |
28 |
TP8 |
触摸板输入引脚（键08） 8-Keys direct output pin (TPQ0) |
29 |
TEST |
仅用于测试 |
30 |
- |
- |
31 |
A2 |
A2-0是用于IC总线设备地址选择的输入引脚 |
32 |
A1 |
A2-0是用于IC总线设备地址选择的输入引脚 |
33 |
A0 |
A2-0是用于IC总线设备地址选择的输入引脚 |
34 |
SLSERT |
串行输出类型选择默认值的选件引脚是2线串行类型 |
35 |
TP7 |
Touchpad input pin (KEY-7) 最大关键按时功能选项（无限/60秒）默认值为无限 |
36 |
TP6 |
Touchpad input pin (KEY-6) 睡眠情绪采样长度功能选项（4.0/2.0ms） |
37 |
SENADJ1 |
触摸板TP4〜7灵敏度调整常见销 |
38 |
TP5 |
Touchpad input pin (KEY-5) 采样率在睡眠模式功能选项(8 hz / 64Hz) Default is 8Hz |
39 |
TP4 |
触摸板输入引脚（键4） Key action function option-0(Single key/Multi key) Default is all single key |
40 |
- |
- |
41 |
VDD |
正电源 |
42 |
- |
- |
43 |
VREG |
Internal regulator output pin |
44 |
ENSLP |
睡眠模式启用/禁用功能选项默认值 |
45 |
VSS |
Negative power supply, ground |
46 |
REGEN |
Internal regulator enable/disable function option Default is enable |
47 |
- |
- |
48 |
- |
- |
Features and Specification of TTP229
- 16通道最大触摸键传感
- Inbuilt regulator for touch sensors
- Operating voltage - 2.4V - 5.5V for built-in regulator mode
- 操作电压-2.0V -5.5V用于禁用的内置调节器
- Operating current 2.5uA typically in 16-key mode. Operating current 2.0uA for 8-key mode.
- I2C enabled for communication with host.
- 使用外部电容器（1-50 pf）可调节灵敏度
- Stable touch detection of the human body
- 所有输出模式均可用于高或通过PAD选项的高低低调。
- 直接模式和切换模式选择引脚可用
- 终身的Auro校准功能。当键未接触时，重新校准周期约为4.0秒。
- 提供一个没有二极管保护电路内置的输出引脚TPQ0D，它是active low
- 通过PAD可选（LPMB PIN）提供快速模式和低功率模式选择。
- Provides direct mode or toggle mode, CMOS output, or open-drain output. active high or active low by option (TOG/AHLF/OD pin).
Note：完整的技术细节可以在TTP229Datasheet, linked at the bottom of this page.
替代产品TTP229
以下是equivalent for TTP229触摸控制器IC-
1.ADS7843
2.TTP226
3.TTP229
TTP229触摸控制器IC-概述
The TTP229 touch controller is the exact noncontact alternative of traditional button switches or matrix keypads. It also has anI2C接口与主机控制器进行通信。
该IC使用使用铜跟踪作为触摸元素的板载感垫，可以使用其他外部电容器范围从1到50pf进行触摸灵敏度。IC使用组功能，其中有4个组可用16-bit modeand 2 groups are available in8-bit mode. Using the external capacitors, each group could individually be controlled for sensitivity related issues.
There are two pins, TP3 and TP4 that could be used to configure the single key or multi-key function. It also allows the user to group the keys. The configurable output is set by those two pins as per the below chart.
TTP229的申请图
下图显示了触摸传感器的标准接口。它需要基本的组件，然后是感官垫。
Follow the below guidelines for PCB design-related purposes-
- Place the Sense pads as close as possible to the IC
- 请勿使用机械外壳
- Use the proper filter and bypass capacitor to reduce noises or ripple in the input supply
- Place the capacitor C2 as close as possible.
- 使用X7R或NPO额定电容器，以便在较宽的温度下更准确。
TTP229的应用
- 电器控制
- 广泛的消费产品
- 替换按钮开关
- Matrix keypads
2D模型TTP229
The dimensions ofTTP229是下面给出以帮助您选择PCB footprint forTTP229.
