MC68HC705K1 Datasheet, PDF (46/140 Pages) Freescale Semiconductor, Inc – HCMOS Microcontroller Unit

Interrupts
Freescale Semiconductor, Inc.
IRQR — Interrupt Request Reset Bit
Writing a logic 1 to this write-only bit clears the IRQF bit. Writing a
logic 0 to IRQR has no effect. Reset has no effect on IRQR.
1 = IRQF bit cleared
0 = No effect
4.3.3 Timer Interrupts
The multifunction timer can generate these interrupts:
• Timer overflow interrupt
• Real-time interrupt
Setting the I bit in the condition code register disables all timer interrupts.
4.3.3.1 Timer Overflow Interrupt
A timer overflow interrupt request occurs if the timer overflow flag, TOF,
becomes set while the timer overflow interrupt enable bit, TOIE, is also
set. See 8.3 Timer Status and Control Register.
4.3.3.2 Real-Time Interrupt
A real-time interrupt request occurs if the real-time interrupt flag, RTIF,
becomes set while the real-time interrupt enable bit, RTIE, is also set.
See 8.3 Timer Status and Control Register.
Technical Data
Interrupts
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MC68HC705K1 — Rev. 2.0