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RM0319 Datasheet(PDF) 264 Page - STMicroelectronics

No. de pieza RM0319
Descripción Electrónicos  SPEAr320S architecture and functionality
PDF  368 Pages
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Fabricante Electrónico  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

RM0319 Datasheet(HTML) 264 Page - STMicroelectronics

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Basic general purpose I/Os (basGPIO)
RM0319
264/368
Doc ID 022640 Rev 3
Figure 94.
GPIO interrupt triggering logic
Note:
1
For level detection case, it is assumed that an external source holds the level constant for
the interrupt to be recognized by the processor.
2
Interrupt control registers must be programmed when corresponding interrupts are not
enabled, in order to avoid spurious interrupts to be generated.
Start
GPIOIE
Masked?
Interrupt
masked
GPIOIS
Edge/level?
GPIOIBE
both edges?
GPIOIEV
Rising/falling?
GPIOIEV
HIGH/LOW?
Yes
No
No
Yes
Yes
No
No
Yes
Yes
No



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