參數(shù)資料
型號: MR80C52CXXX-36SB
廠商: TEMIC SEMICONDUCTORS
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 36 MHz, MICROCONTROLLER, CQCC44
文件頁數(shù): 224/339頁
文件大小: 22337K
代理商: MR80C52CXXX-36SB
30
XMEGA C3 [DATASHEET]
8492F–AVR–07/2013
14.4
Input sensing
Input sensing is synchronous or asynchronous depending on the enabled clock for the ports, and the configuration is
shown in Figure 14-7.
Figure 14-7. Input sensing system overview.
When a pin is configured with inverted I/O, the pin value is inverted before the input sensing.
14.5
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 49 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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