ATXMEGA32A4_14 Datasheet, PDF (29/108 Pages) ATMEL Corporation – Non-volatile Program and Data Memories

Figure 15-4. I/O configuration - Totem-pole with bus-keeper
XMEGA A4
15.3.5 Others
DIRn
OUTn
Pn
INn
Figure 15-5. Output configuration - Wired-OR with optional pull-down
OUTn
Pn
INn
Figure 15-6. I/O configuration - Wired-AND with optional pull-up
INn
Pn
OUTn
8069R–AVR–06/2013
29
Not recommended for new designs -
Use XMEGA A4U series