ATXMEGA128B3-AU ATMEL [ATMEL Corporation], ATXMEGA128B3-AU Datasheet - Page 33

• Manufacturer Part Number: ATXMEGA128B3-AU
• Description: 8/16-bit Atmel XMEGA B3 Microcontroller
• Manufacturer: ATMEL [ATMEL Corporation]

15.3.4
15.3.5
8074B–AVR–02/12
Bus-keeper
Others
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
Figure 15-5. Output configuration - Wired-OR with optional pull-down
Figure 15-6. I/O configuration - Wired-AND with optional pull-up
OUTn
OUTn
OUTn
DIRn
INn
INn
INn
Pn
Pn
Pn
XMEGA B3
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