CHAPTER 7 INTERRUPT/EXCEPTION PROCESSING FUNCTION
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User’s Manual U14492EJ3V0UD
7.8
Periods in Which Interrupts Are Not Acknowledged
An interrupt is acknowledged while an instruction is being executed. However, no interrupt will be acknowledged
between an interrupt request non-sampling instruction and the next instruction (interrupt is held pending).
The interrupt request non-sampling instructions are as follows.
•
EI instruction
•
DI instruction
•
LDSR reg2, 0x5 instruction (for PSW)
•
The load, store, and bit manipulation instructions for the interrupt control register (xxlCn), in-service priority
register (ISPR), and interrupt mask registers 0 to 3 (IMR0 to IMR3)
•
The store instruction for the command register (PRCMD)
•
The load, store, and bit manipulation instructions for the registers related to CSI
Содержание V850E/IA1 mPD703116
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