MC34972 interface equivalent, multiple switch detection interface.
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 34972 device h.
of each pin can be found in the Functional Pin Description section beginning on page 9.
Table 1. 34972 Pin Definitions
Pin Number Pin Name Pin Function
Formal Name
Definition
1
GND
Ground
2
SI
Input
3
SCLK
Input
4
CS
Input
Ground SPI.
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