TTP229 16-way capacitive touch switch sensor module

Description

• Operating voltage 2.4V to 5.5V
• Built-in Voltage regulator
• Stand-by current at 3V: 0.25uA at 8 Hz Sampling Rate
• Two different operating modes: independent 8 Channel O/P and I2C interface 16 Key Mode
• 2 wires I2C interface for both 16 key and 8 key mode
• Onboard LEDs to indicate which pad is being touched
• 2 Wires serial interface can select active high or low by option
• Provides two kinds of sampling rate: slow sampling rate 8Hz and fast sampling rate 64Hz
• Optional maximum key-on time about 80sec
• Auto calibration at power-up (keypad must not be touched for 0.5 seconds after power-up)