mcf51jf128 Freescale Semiconductor, Inc, mcf51jf128 Datasheet - Page 1246

• Manufacturer Part Number: mcf51jf128
• Description: Mcf51jf128 Reference Manual
• Manufacturer: Freescale Semiconductor, Inc

Resets
49.4.6 Exit from Low-Power Modes
The IRQ interrupt, if enabled, can provide a means to exit CPU low power modes, WAIT
and STOP. If the detection mode is set to both falling (or rising) edge and low (or high)
level sensitive and the IRQ pin is enabled and low upon entering WAIT or STOP, an
immediate exit from the Low Power Mode may occur depending on the specific chip
implementation. If the detection mode is set to falling (or rising) edge sensitivity only, an
edge must be seen on the enabled IRQ pin to exit STOP or WAIT mode.
49.4.6.1 Wait
The IRQ module remains active in WAIT mode. Setting the IRQIE bit in the SC register
enables the IRQ interrupt request. Any detected IRQ interrupt will bring the CPU out of
WAIT mode.
49.4.6.2 Stop
The IRQ module remains active in stop mode. Setting the IRQIE bit in the SC register
enables the IRQ interrupt request. Any detected IRQ interrupt will bring the CPU out of
stop mode.
49.5 Resets
The IRQ interrupt is disabled after reset. The IRQ module cannot cause an MCU reset.
49.6 Interrupts
The IRQ module generates a single interrupt.
The IRQ interrupt is listed in the following table, which shows the interrupt name and the
name of the local enable that can be used to disable a IRQ interrupt request.
MCF51JF128 Reference Manual, Rev. 2, 03/2011
Preliminary
1246
Freescale Semiconductor, Inc.