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can not drive 3.3 V IO pin using 1.8 V source.
check that pin minimum input voltagte high level value before connecting any voltage source.
i think 3.3 V can drive VIH_min = 0.65*3.3= 2.15V
can not drive 3.3V IO pin using 1.8V source.
check that pin minimum input voltagte high level value...
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