TTP232

12/06/25

Page 1 of 8

Version：1.0

Reference Only

2 keys Touch Pad Detector IC

Outline



The TTP232 TonTouch

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 2 touch pads with 2 direct output pins

Characteristic



Operating voltage 2.4V ~ 5.5V

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Built-in regulator for touch sensor

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Operating current, @VDD=3V no load

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At stand-by typical 2.5uA



Have two kinds of response time max about 220mS/270mS from stand-by state @VDD=3V, it

selects by pad option（DBT pin）

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Sensitivity can adjust by the capacitance（1~50pF）outside for each touch pad

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Provides direct mode or toggle mode、active high or active low by pad option

（TOG/AHLB pin）

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Have the maximum on time 16sec/infinite by pad option（MOTB pin）

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Offer multi-key or single-key feature by pad option（SM pin）

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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

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The re-calibration period is about 1 sec within 8 sec after power-on. When key has been

touched within 8 sec or key has not been touched more than 8 sec after power-on, then the

re-calibration period change to 4 sec

Applications

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Wide consumer products



Button key replacement