Datasheet

130
XMEGA B [DATASHEET]
8291B–AVR–01/2013
12.3.3 Wired-OR
In the wired-OR configuration, the pin will be driven high when the corresponding bits in the OUT and DIR registers are
written to one. When the OUT register is set to zero, the pin is released, allowing the pin to be pulled low with the internal
or an external pull-resistor. If internal pull-down is used, this is also active if the pin is set as input.
Figure 12-6. Output configuration - Wired-OR with optional pull-down.
12.3.4 Wired-AND
In the wired-AND configuration, the pin will be driven low when the corresponding bits in the OUT and DIR registers are
written to zero. When the OUT register is set to one, the pin is released allowing the pin to be pulled high with the internal
or an external pull-resistor. If internal pull-up is used, this is also active if the pin is set as input.
Figure 12-7. Output configuration - Wired-AND with optional pull-up.