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MC33972 - Multiple Switch Detection Interface

General Description

of each terminal can be found in the System/Application Information section beginning on page 9.

8 25 28 9 15, 18 24 16 17 29 30 31 32 Terminal Name GND SI SCLK CS SP0 3 SP4 7 SG0 6, SG13 7 VPWR WAKE INT AMUX VDD SO F

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 terminal for the MCU to read.

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Other Datasheets by Motorola Semiconductor (now NXP Semiconductors)

Part Number Description
MC33902 High Speed CAN Interface
MC3392 LOW SIDE PROTECTED SWITCH
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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
Freescale Semiconductor, Inc. MOTOROLA SEMICONDUCTOR TECHNICAL DATA Document order number: MC33972 Rev 3.0, 12/2004 Advance Information 33972 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 terminal for the MCU to read. MULTIPLE SWITCH DETECTION INTERFACE WITH SUPPRESSED WAKE-UP Freescale Semiconductor, Inc...