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TTP224N-FO8

Description
1 KEY TOUCH PAD DETECTOR IC
File Size226KB,8 Pages
ManufacturerTontek Design Technology
Websitehttp://www.tontek.com.tw/
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TTP224N-FO8 Overview

1 KEY TOUCH PAD DETECTOR IC

Preliminary
TTP224N-FO8
TonTouch
TM
1 KEY TOUCH PAD DETECTOR IC
The TTP224N-FO8 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 1 touch pad with 1 direct CMOS output pin and 1 open drain output pin that
has diode protective circuit.
GENERAL DESCRIPTION
FEATURES
Operating voltage 2.4V~5.5V
Built-in regulator
Operating current, @VDD=3V no load
At low power mode typical 2uA, At fast mode typical 6.5uA
@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
Provides direct mode or toggle mode、active high or active low by pad option
(TOG/AHLB pin).
Provides one output pin TPQ0D that has no diode protection, active low
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.
Wide consumer products
Button key replacement
APPLICATION
2014/06/05
Page 1 of 8
Ver :3.1
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