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34972

Part Number	34972
Manufacturer	NXP
Description	Multiple Switch Detection Interface
Published	Jul 14, 2020
Detailed Description	Freescale Semiconductor Technical Data Document Number: MC34972 Rev. 1.0, 9/2013 Multiple Switch Detection Interface ...
Datasheet	34972 PDF File

Overview

Freescale Semiconductor Technical Data Document Number: MC34972 Rev.
1.
0, 9/2013 Multiple Switch Detection Interface with Suppressed Wake-up 34972 The 34972 Multiple Switch Detection Interface with suppressed wake-up is designed to detect the closing and opening of up to 22 switch contacts.
The switch status, either open or closed, is transferred to the microprocessor unit (MCU) through a serial peripheral interface (SPI).
The device also features a 22-to-1 analog multiplexer for reading inputs as analog.
The analog input signal is buffered and provided on the AMUX output pin for the MCU to read.
The 34972 device has two modes of operation, Normal and Sleep.
Normal mode allows programmi...

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