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R01UH0336EJ0102 Rev.1.02
Page 189 of 1538
Jul 17, 2014
V850E2/PG4-L
Section 4 Interrupt Functions
4.5.3
Priority Mask Function
The priority mask function prohibits in batch EIINT interrupts of the specified
interrupt priority level.
The interrupt masking priority level is specified with the PMR register. Masking
and acknowledgment can be set for each priority level.
The following operations are possible using this function.
• Temporary prohibition of interrupts that have a priority level that is lower
than a given priority level
• Temporary prohibition of interrupts that have a given priority level
The PMR register prohibits interrupt occurrence. Interrupt request is
acknowledged and held even while the interrupt occurrence is prohibited.
The presence of EIINT interrupts held pending with this function can be
checked with Section 4.5.4, Pending Interrupt Report Function.
PMR.PMRm
Operation
0
Acknowledges requests from priority level m interrupt source.
1
Masks requests from priority level m interrupt source.
Note: m = 0 to 15