SAM4L Datasheet, PDF (108/1185 Pages) ATMEL Corporation – ATSAM ARM-based Flash MCU

ATSAM4L4/L2
ager will generate an interrupt request if at least one of the bits in the Interrupt Mask Register
(IMR) is set. Bits in IMR are set by writing a one to the corresponding bit in the Interrupt Enable
Register (IER), and cleared by writing a one to the corresponding bit in the Interrupt Disable
Register (IDR). The interrupt request remains active until the corresponding bit in the Interrupt
Status Register (ISR) is cleared by writing a one to the corresponding bit in the Interrupt Clear
Register (ICR). Because all the interrupt sources are ORed together, the interrupt request from
the Power Manager will remain active until all the bits in ISR are cleared.
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