2.16.1 Open-Drain Mode Does not Work When TXD Is Configured as Output

When configured as an output, the USART TXD pin can drive the pin high regardless of whether the Open-Drain mode is enabled or not.

Work Around

Configure the TXD pin as an input by writing the corresponding bit in PORTx.DIR to ‘0’ when using Open-Drain mode.

Affected Silicon Revisions


Rev. A4	Rev. A5	Rev. B0
X	X	-

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