TTP223 Touch Key Module – 2Pcs

The touch-sensing IC (TTP223) capacitive touch switch module serves as the foundation for the TTP223 Touch Key Module. a capacitive touch sensor module built around the TTP223 touch sensor integrated circuit. With a sensor range of about 5mm, the module offers a single integrated touch sensing area measuring 11 x 10.5mm.

When the sensor is activated, a visual signal will be displayed by an onboard LED. The module’s output will change from its low, idle state to its high, default action, when activated. Its mode of operation can be changed to toggle output or active low using solder jumpers.

Module TTP223 for Capacitive Touch Sensor. A touchpad detector integrated circuit (TTP223) imitates a single tactile button.

A touchpad detector integrated circuit (TTP223) imitates a single tactile button. The typical direct button key with variable pad size is intended to be replaced by this touch detection integrated circuit.

Trigger-setting mode: (1- > Short ; 0- > No Short)

AB=00: No-lock High TTL level output;
AB=01: Self-lock High TTL level output;
AB=10: No-lock Low TTL level output;
AB=11: Self-lock Low TTL level output;

Features :

1. Supports momentary or latching/toggle modes.
2. Supports Active High or Active Low output signal modes.
3. Dimensions : 15mm x 11mm.
4. Input Voltage : 2 Volt – 5.5 Volts DC.
5. The response time max ~ 60mS in fast mode, ~220mS at low power mode @VDD=3V.
6. Sensitivity can adjust by the capacitance(0~50pF).
7. Have two kinds of sampling length by pad option(SLRFTB pin).
8. Stable touching detection of the human body for replacing traditional direct switch key.
9. Provides Fast mode and Low Power mode selection by pad option(LPMB pin).
10. Provides direct mode、toggle mode by pad option(TOG pin).
11. Open drain mode by bonding option, OPDO pin is open drain output, Q pin is CMOS output.
12. All output modes can be selected active high or active low by pad option(AHLB pin).
13. Have the maximum on time 100sec by pad option(MOTB pin).
14. Have external power-on reset pin(RST pin).
15. After power-on have about 0.5sec stable-time, during the time do not touch the keypad, and the function is disabled.
16. Auto calibration.
17. Re-calibration period is about 4.0 sec when the key has not be touched.