Preliminary

TTP224N-BSB

TonTouch

TM

2014/06/05

Page 1 of 9

Ver :3.1

4 KEY TOUCH PAD DETECTOR IC

GENERAL DESCRIPTION

The TTP224N-BSB TonTouch

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.

FEATURES

 Operating voltage 2.4V~5.5V

 Built-in regulator

 Operating current, @VDD=3V no load

At low power mode typical 2.5uA, At fast mode typical 9uA



@VDD=3V operating voltage :

The response time about 60mS at fast mode,160mS at low power mode

 Sensitivity can adjust by the capacitance(0~50pF) outside for each touch pad

 Provides Fast mode and Low Power mode selection by pad option(LPMB pin)

 Provides direct mode or toggle mode、CMOS output or open drain output、

active high or active low by pad option(TOG/AHLB/OD pin).

 Have the maximum on time 16sec/infinite by pad option(MOT0 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 for life, and the re-calibration period is about 4.0sec, when key has not be

touched.

APPLICATION

 Wide consumer products

 Button key replacement