Datasheet

31
XMEGA B1 [DATASHEET]
Atmel-8330H-AVR-ATxmega64B1-128B1_datasheet–12/2014
15.3.1 Push-pull
Figure 15-1. I/O Configuration - Totem-pole
15.3.2 Pull-down
Figure 15-2. I/O Configuration - Totem-pole with Pull-down (on Input)
15.3.3 Pull-up
Figure 15-3. I/O Configuration - Totem-pole with Pull-up (on Input)
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’.
INn
OUTn
DIRn
Pn
INn
OUTn
DIRn
Pn
INn
OUTn
DIRn
Pn