MC33972 Datasheet - NXP

MC33972 Multiple Switch Detection Interface

of each pin can be found in the Functional Pin Description section beginning on page 10. Pin Number Pin Name Pin Function Formal Name Definition 1 GND Ground 2 SI Input 3 SCLK Input 4 CS Input Ground SPI Slave In Serial Clock Chip Select Ground for logic, analog, and switch to batte.

MC33972 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 pull-u

MC33972-NXP.pdf