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MCZ33972

Part Number	MCZ33972
Manufacturer	Freescale Semiconductor
Description	Multiple Switch Detection Interface
Published	Jun 12, 2007
Detailed Description	Freescale Semiconductor Advance Information Document Number: MC33972 Rev. 9.0, 4/2007 Multiple Switch Detection Interf...
Datasheet	MCZ33972 PDF File

Overview

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 allows programming o...

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