ATXMEGA256A3B_09 ATMEL [ATMEL Corporation], ATXMEGA256A3B_09 Datasheet - Page 30

• Manufacturer Part Number: ATXMEGA256A3B_09
• Description: 8/16-bit XMEGA A3B Microcontroller
• Manufacturer: ATMEL [ATMEL Corporation]

15.3.1
15.3.2
15.3.3
15.3.4
8116F–AVR–09/09
Push-pull
Pull-down
Pull-up
Bus-keeper
Figure 15-1. I/O configuration - Totem-pole
Figure 15-2. I/O configuration - Totem-pole with pull-down (on input)
Figure 15-3. I/O configuration - Totem-pole with pull-up (on input)
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’.
OUTn
DIRn
OUTn
OUTn
DIRn
DIRn
INn
INn
INn
Pn
Pn
Pn
XMEGA A3B
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