33972A Datasheet Multiple Switch Detection Interface

Manufacturer: Freescale Semiconductor (now NXP Semiconductors)

Download the 33972A datasheet PDF. This datasheet also includes the 33972 variant, as both parts are published together in a single manufacturer document.

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33972A multiple switch detection interface by Freescale Semiconductor (now NXP Semiconductors) - Datasheet Preview — Note: The manufacturer provides a single datasheet file (33972_FreescaleSemiconductor.pdf) that lists specifications for multiple related part numbers.

Datasheet Details

Part number	33972A
Manufacturer	Freescale Semiconductor (now NXP Semiconductors)
File Size	1.72 MB
Description	Multiple Switch Detection Interface
Download	33972A Download (PDF)

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).

Key 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 of the device and supplies switch contacts with pullup or pulldown current as it monitors switch change of state. The Sleep mode provides low quiescent current, which makes the 33972 ideal for automotive and industrial products requiring low sleep state.

📁 Similar Datasheet

Part Number	Description	Manufacturer
33972A	Multiple Switch Detection Interface	NXP
33972	Multiple Switch Detection Interface	NXP
33972T	Multiple Switch Detection Interface	NXP

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