m3819 Renesas Electronics Corporation., m3819 Datasheet - Page 80

• Manufacturer Part Number: m3819
• Description: Mitsubishi 8-bit Single-chip Microcomputer 740 Family / 38000 Series
• Manufacturer: Renesas Electronics Corporation.

Fig. 61 Timing chart after an interrupt occurs
Fig. 62 Time up to execution of the interrupt processing routine
Timing after interrupt
The interrupt processing routine begins with the machine cycle following the completion of the instruction that is
currently in execution.
Figure 61 shows a timing chart after an interrupt occurs, and figure 62 shows the time up to execution of the interrupt
processing routine.
66
Generation of interrupt request
Address bus
* : at execution of DIV instruction
Main routine
Data bus
0 to 16* cycles
SYNC
WR
RD
B
A
SYNC
L
L
(At performing 8.4 MHz, 1.7
SPS
, B
, A
H
H
: CPU operation code fetch cycle
: Vector address of each interrupt
: Jump destination address of each interrupt
: “00
(This is an internal signal which cannot be observed from the external unit.)
Not used
PC
16
” or “01
7 to 23 cycles
Waiting time for
post-processing
of pipeline
S
,
16
SPS
2 cycles
”
PC
S-1, SPS
H
PC
S-2
s to 5.5 s)
L
,
SPS
Stack push and
Vector fetch
PS
B
5 cycles
L
A
L
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
B
H
Start of interrupt processing
A
A
H
L
, A
Interrupt processing routine
MITSUBISHI MICROCOMPUTERS
H
3819 Group