TTP229-LSF
Overview
The TTP229-LSF TonTouchTM IC is capacitive sensing design specifically for touch pad controls. The device built in regulator for touch sensor.
- Operating voltage：2.4V~5.5V Built-in regulator Stand-by current At 3V, and sleep mode slow sampling rate 8Hz： => Typical 2.5uA for 16 input keys => Typical 2.0uA for 8 input keys Provides to set 8 direct keys or 16 direct keys by option Provides to set 8 separate outputs only for 8 direct input keys mode Has I2C-bus slave interface, both can use for 8 and 16 direct input keys mode TTP229-LSF Slave Device Identifier and Address => [1010 111R] 8 separate outputs can select output driving types by option (CMOS/OD/OC with active high/low) 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 * * * * * * * * *
