NEC PD78054(A) User Manual
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
Jump to Interrupt
Servicing
6 Clocks
Interrupt
Servicing
Program
Servicing
Program
33 Clocks
32 Clocks
CPU Processing
× ×
IF
(
× ×
PR=1)
× ×
IF
(
× ×
PR=0)
25 Clocks
f
CPU
1
Remark
1 clock :
(f
CPU
: CPU clock)
Instruction
Instruction
PSW and PC Save,
Jump to Interrupt
Servicing
Jump to Interrupt
Servicing
6 Clocks
Interrupt
Servicing
Program
Servicing
Program
8 Clocks
7 Clocks
CPU Processing
× ×
IF
(
× ×
PR=1)
× ×
IF
(
× ×
PR=0)