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ATXMEGA384C3_14 Datasheet, PDF (30/125 Pages) ATMEL Corporation – 8/16-bit Atmel XMEGA C3 Microcontroller
Figure 15-4. I/O Configuration - Totem-pole with Bus-keeper
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15.3.5 Others
Figure 15-5. Output Configuration - Wired-OR with Optional Pull-down
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Figure 15-6. I/O Configuration - Wired-AND with Optional Pull-up
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XMEGA C3 [DATASHEET]
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Atmel-8361F-AVR-ATxmega384C3-Datasheet–11/2014