MC33972A Datasheet (Freescale Semiconductor) - Multiple Switch Detection Interface

MC33972A, Multiple Switch Detection Interface

of each pin can be found in the Functional Pin Description section beginning on page 10.

Pin Number 1 2 3 4 5 *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 S

MC33972A 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