概觀
The IS31SE5100 is an ultra low power, fully integrated
8-channel solution for capacitive touch-buttons
applications. The chip allows electrodes to project
sense fields through any dielectric such as glass or
plastic. On-chip calibration logic continuously monitors
the environment and automatically adjusts on-and-off
threshold levels to prevent false sensor activation.
The IS31SE5100 supports the 400kHz I²C serial bus
data protocol and includes a field programmable slave
address. An INTB is generated when a button event
(touched or released) occurs, triggered and cleared
condition could be configured by setting the interrupt
register.
IS31SE5100 is available in QFN-24 (4mm × 4mm) and
SSOP-24 packages. It operates from 2.7V to 5.5V over
the temperature range of -40°C to +85°C.