Datasheet

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[Not recommended for new designs - Use XMEGA A1U series] XMEGA A1 [DATASHEET]
8067O–AVR–06/2013
15.3.4 Bus-keeper
The bus-keeper’s weak output produces the same logical level as the last output level. It acts as a pull-up if the last level
was ‘1’, and pull-down if the last level was ‘0’.
Figure 15-4. I/O configuration - Totem-pole with bus-keeper
15.3.5 Others
Figure 15-5. Output configuration - Wired-OR with optional pull-down
Figure 15-6. I/O configuration - Wired-AND with optional pull-up
INn
OUTn
DIRn
Pn
INn
OUTn
Pn
INn
OUTn
Pn