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ATXMEGA8E5 데이터시트(PDF) 33 Page - ATMEL Corporation

부품명 ATXMEGA8E5
상세설명  8/16-bit Atmel AVR XMEGA Microcontrollers
PDF  147 Pages
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ATXMEGA8E5 데이터시트(HTML) 33 Page - ATMEL Corporation

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XMEGA E5 [DATASHEET]
Atmel-8153I–AVR-ATxmega8E5-ATxmega16E5-ATxmega32E5_Datasheet–08/2014
16.4
Input sensing
Input sensing is synchronous or asynchronous depending on the enabled clock for the ports, and the configuration is
shown in Figure 16-7.
Figure 16-7. Input sensing system overview.
When a pin is configured with inverted I/O, the pin value is inverted before the input sensing.
16.5
Alternate Port Functions
Most port pins have alternate pin functions in addition to being a general purpose I/O pin. When an alternate function is
enabled, it might override the normal port pin function or pin value. This happens when other peripherals that require pins
are enabled or configured to use pins. If and how a peripheral will override and use pins is described in the section for
that peripheral. “Pinout and Pin Functions” on page 58 shows which modules on peripherals that enable alternate
functions on a pin, and which alternate functions that are available on a pin.
D
Q
R
INVERTED I/O
Interrupt
Control
D
Q
R
Pxn
Synchronizer
INn
EDGE
DETECT
Synchronous sensing
EDGE
DETECT
Asynchronous sensing
IRQ
Synchronous
Events
Asynchronous
Events



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