TTP229
Overview
The TTP229 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 for built-in regulator enable
- 0V~5.5V for built-in regulator disable
- Built-in regulator with external enable/disable option
- Stand-by current At 3V, and sleep mode slow sampling rate 8Hz： Internal regulator is enabled, the Stand-by current => Typical 2.5uA for 16 input keys => Typical 2.0uA for 8 input keys Internal regulator is disabled, the Stand-by current => 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 two kinds of serial output interface, both can use for 8 and 16 direct input keys mode Include 2-wires serial interface and I2C-bus slave interface, they are selected by option
- 8 separate outputs can select output driving types by option (CMOS/OD/OC with active high/low)
- 2-wires serial interface can select active high or low by option
- Offer multi-key or single-key feature by option
