TTP224B Datasheet (TONTEK) - 4 keys Touch Pad Detector IC

TTP224B, 4 keys Touch Pad Detector IC

Key-on & timing control TOG AHLB OD SM Pad NO 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 Pad Name TP0 TP1 TP2 TP3 AHLB VDD VREG TOG LPMB MOT1 MOT0 VSS REGEN OD SM TPQ3 TPQ2 TPQ1 TPQ0 Type I/O I/O I/O I/O I-PL P P I-PL I-PL I-PH I-PH P I-PH I-PH I-PH O O O O Pad Description Touch pad input

TTP224B 4 keys Touch Pad Detector IC Outline z The TTP224B TonTouchTM IC is capacitive sensing design specifically for touch pad controls.

The device built in regulator for touch sensor.

Stable sensing method can cover diversity conditions.

Human interfaces control panel links through non-conductive dielectric material.

The main application is focused at replacing of the mechanical switch or button.

The ASSP can independently handle the 4 touch pads with 4 direct output pins Characteristic z Ope

TTP224B Features

* 1 0 Direct mode, CMOS output active high 1 1 Direct mode, CMOS output active low 0 0 Direct mode, Open drain output active high 0 1 Direct mode, Open drain output active low 1 0 Toggle mode, CMOS output, Power on state=0 1 1 Toggle mode, CMOS output, Power on state=1 0 0 Toggle mode, Power on