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TTP229-JQB Datasheet, PDF (1/12 Pages) Tontek Design Technology – 8 KEYS TOUCH PAD DETECTOR IC | |||
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Preliminary
TTP229-JQB
TonTouchTM
8 KEYS TOUCH PAD DETECTOR IC
GENERAL DESCRIPTION
The TTP229-JQB 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 8
touch pads.
FEATURES
 Operating voltageï¼2.4V~5.5V
 Built-in regulator
 Stand-by current
At 3V, and sleep mode slow sampling rate 8Hzï¼=> Typical 2.0uA
 Provides a 2-wires serial output interface
 2-wires serial interface can select active high or low by option
 Offer multi-key or single-key feature by option
 Provides two kinds of sampling rate that slow sampling rate 8Hz
and fast sampling rate 64Hz at sleep mode
 Have the maximum key-on time about 80sec by pin option
 Sensitivity can adjust by the capacitance(1~50pF) outside
 After power-on have about 0.5sec stable-time,
During the time do not touch the key pad, and all functions are disabled
 Auto calibration for environment changing
And the re-calibration period is about 4.0sec, when all keys are not activated for fixed time
APPLICATION
 Wide consumer products
 Button key replacement
09â/12/22
Page 1 of 12
Ver : 1.1
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