- Control interface : A total of three pins (gnd, vcc, sig), gnd to ground , vcc is the power supply , sig digital signal output pin
- Compatible for Raspberry pi, ARM, AVR, 8051, PIC. STM, UNO
- Can replace the traditional touch of a button, touch area : Similar to a fingerprint icon
Ttp223 capacitive touch sensor module for Raspberry pi, ARM, AVR, 8051, PIC. STM, UNO. 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. Features: 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 at vdd=3v. Sensitivity can adjust by the capacitance(0~50pf). Have two kinds of sampling length by pad option(slrftb pin). Stable touching detection of 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 100sec by pad option(motb pin). Have external power on reset pin(rst pin). After power-on have about 0. 5Sec stable-time, during the time do not touch the key pad and the function is disabled. Auto calibration. Re-calibration period is about 4. 0Sec, when key has not be touched.