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| ATXMEGA16E5_14 Datasheet, PDF (32/147 Pages) ATMEL Corporation – 8/16-bit Atmel AVR XMEGA Microcontrollers | |||
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16.3.4 Bus-keeper
The bus-keeperâs weak output produces the same logical level as the last output level. It acts as a pull-up if the last level
was â1â, and pull-down if the last level was â0â.
Figure 16-4. I/O configuration - Totem-pole with bus-keeper.
DIRxn
OUTxn
Pxn
INxn
16.3.5 Others
Figure 16-5. Output configuration - Wired-OR with optional pull-down.
OUTxn
Pxn
INxn
Figure 16-6. I/O configuration - Wired-AND with optional pull-up.
INxn
Pxn
OUTxn
XMEGA E5 [DATASHEET] 32
Atmel-8153IâAVR-ATxmega8E5-ATxmega16E5-ATxmega32E5_Datasheetâ08/2014
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