atxmega192a1-au ATMEL Corporation, atxmega192a1-au Datasheet - Page 28
atxmega192a1-au
Manufacturer Part Number
atxmega192a1-au
Description
8/16-bit Xmega A1 Microcontroller
Manufacturer
ATMEL Corporation
Datasheet
1.ATXMEGA192A1-AU.pdf
(113 pages)
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ATXMEGA192A1-AU
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14.3.1
14.3.2
14.3.3
14.3.4
8067M–AVR–09/10
Push-pull
Pull-down
Pull-up
Bus-keeper
Figure 14-1. I/O configuration - Totem-pole
Figure 14-2. I/O configuration - Totem-pole with pull-down (on input)
Figure 14-3. 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
OUTn
DIRn
OUTn
DIRn
DIRn
INn
INn
INn
Pn
Pn
Pn
XMEGA A1
28
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