xmega a3u - Elfa
xmega a3u - Elfa
xmega a3u - Elfa
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XMEGA A3U<br />
15.3.4 Bus-keeper<br />
The bus-keeper’s weak output produces the same logical level as the last output level. It acts as<br />
a pull-up if the last level was ‘1’, and pull-down if the last level was ‘0’.<br />
Figure 15-4.<br />
I/O configuration - Totem-pole with bus-keeper.<br />
DIRn<br />
OUTn<br />
Pn<br />
INn<br />
15.3.5 Others<br />
Figure 15-5.<br />
Output configuration - Wired-OR with optional pull-down.<br />
OUTn<br />
Pn<br />
INn<br />
Figure 15-6.<br />
I/O configuration - Wired-AND with optional pull-up.<br />
INn<br />
Pn<br />
OUTn<br />
8386B–AVR–12/11<br />
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