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EM6420

Part Number	EM6420
Manufacturer	EM Microelectronic
Description	Ultra Low Power Capacitive Touch-Sensor Interface
Published	Aug 14, 2010
Detailed Description	EM MICROELECTRONIC - MARIN SA EM6420 Ultra Low Power Capacitive Touch Sensor Interface IC Description The EM6420 is a...
Datasheet	EM6420 PDF File

Overview

EM MICROELECTRONIC - MARIN SA EM6420 Ultra Low Power Capacitive Touch Sensor Interface IC Description The EM6420 is an ultra low power Touch Sensor Interface IC able to scan sequentially up to 16 capacitive sensors.
The device parameters (number of used sensors, sensors scan frequency, sensors sensitivity level, IRQ condition) are configurable either from a host microcontroller through a communication port or through configuration inputs.
Recognised touch inputs will be signaled with an active edge at the IRQ pad and data are ready to be read through the communicaion port by the host MCU.
Conditions for the IRQ to get active are configurable : at the end of every scan, at the end of a scan if at least one sensor is active or at the end of a scan if the sensors state has changed.
The EM6420 can also detect the most active sensor in applications where sensors are tightly spaced.
It compares relative levels among sensors and selects the sensor with the largest signal strength.
To incr...

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