TTP223 overview
The TTP223 is a Touch Sensor Module, supplied in an SOT-23 package. Main ratings: Supply Voltage 2.5 to 5.5V; Supply current (Vcc = 5V): 6uA (Idle) 16mA (Active); Sensor area 11 x 10.5mm; Max sensor range ~5mm. The absolute maximum ratings table on this page lists the 4 limits from the manufacturer's datasheet that must not be exceeded. This page brings together the TTP223 pinout, key specifications and maximum ratings, with the full datasheet PDF to preview below or download.
This Arduino touch sensor module is based on the dedicated TTP223 touch sensor IC. The TTP223 capacitive touch switch provides a single integrated touch sensing area of 11 x 10.5mm with a sensor range of ~5mm. An onboard LED will give a visual indication of when the sensor is triggered. When triggered the module's output will switch from its idle low state to high (default operation). Solder jumpers allow for reconfiguring its mode of operation to be either active low or toggle output.
Key specifications
Datasheet
TTP223 features
- Modes Toggle or switch.
- The response time max is about 60mS at fast mode, 220mS at low power mode @VDD=3V.
- Sensitivity can adjust by the capacitance (0~50pF) outside.
- Have two kinds of sampling length by pad option (SLRFTB pin).
- Stable touching detection of the human body for replacing the traditional direct switch key.
- Provides Fast mode and Low Power mode selection by pad option (LPMB pin).
- All output modes can be selected as active high or active low by pad option (AHLB pin).
- Have the maximum on-time 100sec by pad option (MOTB pin).
- Have an external power-on reset pin (RST pin).
- Auto calibration for life.
- The re-calibration period is about 4.0sec when the key has not been touched
TTP223 pinout
| Name | Description |
|---|---|
| VCC | Module power supply – 2 – 5.5V |
| GND | Ground |
| OUT | Digital output |
Absolute maximum ratings
| Parameter | Symbol | Value | Unit |
|---|---|---|---|
| Operating Temperature | -20 ~ +70 | °C | |
| Storage Temperature | -50 ~ +125 | °C | |
| Supply Voltage | VDD | 3 5.5 | V |
| FAST | -512K - | Hz |
TTP223 applications
- Capacitive touch controls: The TTP223 touch sensor module is commonly used in capacitive touch control applications. It can be integrated into electronic devices such as touch-sensitive buttons, touch panels, or touchscreens. The sensor module detects the touch of a finger or a conductive object, allowing for intuitive and responsive user interfaces in various electronic systems.
- Home automation: The TTP223 touch sensor module finds application in home automation systems. It can be used to create touch-sensitive controls for lighting, appliances, or smart devices. By simply touching the sensor, users can control the operation of lights, fans, or other home automation components, providing convenient and seamless interaction within a smart home environment.
- Security systems: The TTP223 touch sensor module can be utilized in security systems for user authentication or access control. It can serve as a touch-based input for keyless entry systems, security panels, or door locks. By incorporating the touch sensor, users can input codes or provide biometric verification through touch, enhancing security and convenience in residential or commercial setting
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