MC33972A - Multiple Switch Detection Interface

Product Overview

Freescale Semiconductor

Datasheet Details

Part number	MC33972A
Manufacturer	Freescale Semiconductor
File Size	1.72 MB
Description	Multiple Switch Detection Interface
Datasheet	MC33972A_FreescaleSemiconductor.pdf
Additional preview pages of the MC33972A datasheet.

Product details

Description

of each pin can be found in the Functional Pin Description section beginning on page 10. 8 25 28 9 15, 18 24 16 17 29 30 31 32 Pin Name GND SI SCLK CS SP0 3 SP4 7 SG0 6, SG13 7 VPWR WAKE INT AMUX VDD SO Formal Name Ground SPI Slave In Serial Clock Chip Select Programmable Switches 0 7 Switch-to-Ground Inputs 0 13 Battery Input Wake-Up Interrupt Analog Multiplex Output Voltage Drai

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.

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Published: Jun 12, 2007 |