Does anyone know in a SHARC21369 design, the core voltage is 1.2V and the I/O voltage is 3.3V, is it ok to supply 3.3V voltage to I/O with no voltage supply to core for some time? will this damage the chip ? thanks!
From your mail, I am not clear when this scenario happens. Does this refer to the power-up time? How long the system will not have core supply?
Thanks for your reply. this may be used in such as watchdog scenario, the watchdog module will reset the core and cut off the power supply to the core while still have power supply to IO pins, this may take 5 minutes .
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