TTP223 Capacitive Touch Switch DC 2V 5.5V Low Power Consumption Touch Sensor Switches Module
TTP223 Capacitive Touch Switch The TTP223 is a touch pad detector IC replicating a single tactile button. This touch detection IC is designed for replacing traditional direct button key with diverse pad size. This versatile small sensor board is user configurable with on-board shorting pads as activated Low or High
Momentary or latching output to suit for various control requirements. This touching detection module is designed for replacing traditional mechanical button switch with diverse pad size with no wear and tear problem of mechanical switches
Specification:
- Supports momentary or latching/toggle modes
- Supports Active High or Active Low output signal modes
- Dimensions: 15mm x 11mm
- Input Voltage: 2V-5.5V DC
- The response time max ~ 60mS in fast mode, ~220mS at low power mode @VDD=3V
- Sensitivity can be adjusted by the capacitance (0~50pF)
- Have two kinds of sampling length by pad option (SLRFTB pin)
- Stable touching detection of the human body for replacing traditional direct switch key
- Provides Fast mode and Low Power mode selection by pad option (LPMB pin)
- Provides direct mode toggle mode by pad option (TOG pin)
- Open drain mode by bonding option, OPDO pin is open drain output, Q pin is CMOS output
- All output modes can be selected active high or active low by pad option (AHLB pin)
- Have the maximum on time 100 sec by pad option (MOTB pin)
- Have external power on the reset pin (RST pin)
- After power-on has about 0.5sec stable time, during that time do not touch the keypad, and the function is disabled
- Auto calibration
- Re-calibration period is about 4.0sec when a key has not been touched
Trigger-setting mode: (1- > Short ; 0- > No Short)
- AB=0 0: No-lock High TTL level output;
- AB=0 1: Self-lock High TTL level output;
- AB=1 0: No-lock Low TTL level output;
- AB=1 1: Self-lock Low TTL level output;
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