3.3.2 I/O Pins
After power-up, the I/O pins are tri-stated except for RESETn, SWDIO and SWCLK, which are pull-up enabled and configured as input.
After power-up, the I/O pins are tri-stated except for RESETn, SWDIO and SWCLK, which are pull-up enabled and configured as input.
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