Document
Preliminary
TTP229-GQD TonTouchTM
8 KEYS TOUCH PAD DETECTOR IC
GENERAL DESCRIPTION
The TTP229-GQD 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 voltage:2.4V~5.5V
Built-in regulator Stand-by current
At 3V, and sleep mode slow sampling rate 8Hz:=> Typical 2.0uA Provides I2C-bus slave interface 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 sta.