1pcs TTP229 16-Channel Digital Capacitive Switch Touch Sensor Module

Description of TTP229 16 - Channel Capacitive Digital Touch Sensor Module

Product Parameters

- Product Name: Digital Touch Sensor Module

- On - board Components: TTP229 Capacitive 16 - Key Touch Sensing IC, Power Indicator Light

- Operating Voltage: 2.4V - 5.5V

- Dimensions: 62*47mm

- Weight: Approximately 8.8g

Product Features

Operating Voltage

- When the built - in voltage regulator circuit is enabled: 2.4V ~ 5.5V

- When the built - in voltage regulator circuit is disabled: 2.0V ~ 5.5V

- The function of enabling/disabling the built - in voltage regulator circuit can be selected externally.

Standby Current (Under 3V voltage, sleep mode with low - speed sampling rate of 8Hz)

When the internal voltage regulator is enabled

- 16 - key mode: Typical value is 2.5uA

- 8 - key mode: Typical value is 2.0uA

Modes and Ports

- Option is provided to select 8 - key or 16 - key mode. In the 8 - key direct output mode, there are 8 independent output ports.

Two serial output methods are supported, applicable to 8 - key and 16 - key modes, including 2 - wire serial mode (12℃ communication mode, selected by option).

Output and Functions

- 8 direct output ports can select different output types (CMOS/OD/OC, with high/low level effective). In 2 - wire serial mode, Option can be used to select high - level effective or low - level effective.

- Option is provided to select multi - key or single - key effective function, and two sampling rates are available (8Hz in sleep mode, 64Hz in fast sampling rate).

- Option can set the maximum output time of effective keys to be approximately 80 seconds, and the sensitivity can be adjusted by an external capacitor (1 ~ 500F).

Startup and Calibration

- It takes 0.5 seconds for stabilization after power - on. Do not touch the key panel during this period, and all function touches are invalid.

Automatic calibration is available: When all keys are not touched for a period of time, the chip system will re - calibrate in approximately 4.0 seconds.