NEC uPD78056Y - Manual (Page 502)

502
CHAPTER 21 INTERRUPT AND TEST FUNCTIONS
Figure 21-14. Interrupt Request Acknowledge Timing (Minimum Time)
Remark 1 clock : (f CPU : CPU clock)
Figure 21-15. Interrupt Request Acknowledge Timing (Maximum Time)
f CPU
1
Instruction Divide Instruction
PSW and PC Save,
Jump to Interrupt
Servicing
6 Clocks
Interrupt
Servicing
Program
33 Clocks
32 Clocks
CPU Processing
Ч Ч
IF
( Ч Ч PR=1)
Ч Ч
IF
( Ч Ч PR=0)
25 Clocks
f CPU
1
Remark 1 clock : (f CPU : CPU clock)
Instruction Instruction
PSW and PC Save,
Jump to Interrupt
Servicing
6 Clocks
Interrupt
Servicing
Program
8 Clocks
7 Clocks
CPU Processing
Ч Ч IF
( Ч Ч PR=1)
Ч Ч IF
( Ч Ч PR=0)