XRA1403 expander equivalent, 16-bit spi gpio expander.
* 1.65V to 3.6V operating voltage
* 16 General Purpose I/Os (GPIOs)
* 5V tolerant inputs
* Maximum stand-by current of 1uA at +1.8V
* SPI bus interfac.
where the power is removed from the remote devices, but they may still be connected to the GPIO expander.
As inputs, the.
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