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CS Jumper - Removing the solder from this jumper enables SPI mode.
When the part's CS line is low at boot, it enables SPI mode.
SA0 Pin - When the chip is in SPI mode, this goes from being the address
select pin to being the MISO pin.
CS Pin - Chip select for SPI mode. Unused in I C mode.
2
Interrupt Pins - These pins are tied to interrupts that can be setup by the
software library to trigger on various conditions.
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