TTP232 Datasheet, PDF (1/8 Pages) Tontek Design Technology – 2 keys Touch Pad Detector IC

2 keys Touch Pad Detector IC
TTP232
Outline
 The TTP232 TonTouch^TM 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 2 touch pads with 2 direct output pins
Characteristic
 Operating voltage 2.4V ~ 5.5V
 Built-in regulator for touch sensor
 Operating current, @VDD=3V no load
 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）
 Sensitivity can adjust by the capacitance（1~50pF）outside for each touch pad
 Provides direct mode or toggle mode、active high or active low by pad option（TOG/AHLB pin）
 Have the maximum on time 16sec/infinite by pad option（MOTB pin）
 Offer multi-key or single-key feature by pad option（SM 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
 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
 Wide consumer products
 Button key replacement
12/06/25
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Version：1.0
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