Sonic Alert msm85c154hvs User Manual
INTERNAL SPECIFICATIONS
143
Figure 4-51
Interrupt response time chart when ordinary instruction is executed after
returning to main routine during continuous interrupt processing
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~M4
M1 or M2
M1
M2
1
0
RETI execution
Timer 1 interrput address call
Execution of one ordinary
main routine instruction