M30622MA-XXXFP RENESAS [Renesas Technology Corp], M30622MA-XXXFP Datasheet - Page 517

• Manufacturer Part Number: M30622MA-XXXFP
• Description: 16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY
• Manufacturer: RENESAS [Renesas Technology Corp]

Interrupt
502
4.6 Multiple Interrupts
The state when control branched to an interrupt routine is described below:
Setting the interrupt enable flag (I flag) to “1” within an interrupt routine allows an interrupt request assigned
a priority higher than the IPL to be accepted. Figure 4.6.1 shows the scheme of multiple interrupts.
An interrupt request that is not accepted because of low priority will be held. If the condition following is met
when the REIT instruction returns the IPL and the interrupt priority is determined, then the interrupt request
being held is accepted.
· The interrupt enable flag (I flag) is set to “0” (the interrupt is disabled).
· The interrupt request bit of the accepted interrupt is set to “0”.
· The processor interrupt priority level (IPL) is assigned to the same interrupt priority level as assigned to
Interrupt priority level of the interrupt request being held
the accepted interrupt.
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Returned the IPL
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
Mitsubishi microcomputers
M16C / 62 Group