Low current CMOS process
Patented capacitance to voltage
(C-V) converter
A electrode terminal
Common B electrode terminal
Sleep mode
Active shield signal output
Digital moving average filter
Temperature compensation
10-bit ADC
Threshold comparator
Interrupt output
Internal EEPROM
I2C interface
Parallel CPU interface
SPI interrace
32 relay/LED drivers, divided into
4 groups, rated at 40mA
2 threshold comparators
SPI interface
8-channel A electrode terminals