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33972A

Part Number	33972A
Manufacturer	Freescale Semiconductor
Description	Multiple Switch Detection Interface
Published	Aug 8, 2007
Detailed Description	www.DataSheet4U.com Freescale Semiconductor Advance Information Document Number: MC33972 Rev. 9.0, 4/2007 Multiple Sw...
Datasheet	33972A PDF File

Overview

www.
DataSheet4U.
com Freescale Semiconductor Advance Information Document Number: MC33972 Rev.
9.
0, 4/2007 Multiple Switch Detection Interface with Suppressed Wake-Up The 33972 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 33972 device has two modes of operation, Normal and Sleep.
Normal mode...

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