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INTERNAL SPECIFICATIONS
145
Figure 4-52 Interrupt response time chart when IE or IP manipulating instruction is
executed after returning to main routine during continuous interrupt
processing
S4 S5 S6 S1 S2 S3
XTAL1
ALE
Timer flag 1
S1 S2 S3 S4 S5 S6 S1 S2 S3 S4 S5 S6 S1 S2 S3 S4 S5 S6
Instruction
execution
S6
1 -
0
1
0 -
M2 M1 or M2 M1
1
0
RETI execution
Timer 1 interrput address call
Execution of IE or IP
manipulation instruction
Execution of one instruction
M1~M4
M1 or M2