TTP229 Capacitive Touch Sensor Module 16 Channel

TTP229 Capacitive Touch Sensor Module 16 Channel TonTouchTM IC is a capacitive sensing design specifically for touchpad controls. The device built-in regulator for the touch sensor. A stable sensing method can cover diversity conditions. Human interface control panel links through the non-conductive dielectric material. The main application is focused on replacing the mechanical switch or button. The ASSP can independently handle the 8 touch pads or up to 16 touchpads.

Features/Specs:

● Operating voltage：2.4V~5.5V for built-in regulator enable

2.0V~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 An internal regulator is enabled, the Stand-by current

=> Typical 2.5uA for 16 input keys

=> Typical 2.0uA for 8 input keys

An 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

● 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 60sec 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 keypad, 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 a fixed time