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33975

Freescale Semiconductor
Part Number 33975
Manufacturer Freescale Semiconductor
Description Multiple Switch Detection Interface
Published Aug 8, 2007
Detailed Description www.DataSheet4U.com Freescale Semiconductor Technical Data Document order number: MC33975 Rev 4.0, 08/2005 Multiple S...
Datasheet PDF File 33975 PDF File

33975
33975

Overview
www.
DataSheet4U.
com Freescale Semiconductor Technical Data Document order number: MC33975 Rev 4.
0, 08/2005 Multiple Switch Detection Interface with Suppressed Wake-Up and 32mA Wetting Current Freescale offers multiple Switch Detection Interface Devices.
The 33975 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 33975 device has two modes of operation, Normal and Sleep.
Normal mode allows programming of the device and supplies switch contacts with pull-up or pull-down current as it monitors switch change of state.
The Sleep mode provides low quiescent current, which makes the 33975 ideal for automotive and industrial products requiring low sleep state currents.
Improvements are a ...


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