Renesas PCA4738L-64A Technical Information Seite 15

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12
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
3822 Group
MITSUBISHI MICROCOMPUTERS
Table 7 Push and pop instructions of accumulator or processor status register
Accumulator
Processor status register
Push instruction to stack
PHA
PHP
Pop instruction from stack
PLA
PLP
Fig. 10 Register push and pop at interrupt generation and subroutine call
Note: Condition for acceptance of an interrupt Interrupt enable flag is 1
E
x
e
c
u
t
e
J
S
R
O
n
-
g
o
i
n
g
R
o
u
t
i
n
e
M
(
S
)(
P
C
H
)
(
S
)
(
S
)
1
M
(
S
)(
P
C
L
)
E
x
e
c
u
t
e
R
T
S
(
P
C
L
)M
(
S
)
(S) (S) 1
(
S
)
(
S
)
+
1
(S) (S) + 1
(
P
C
H
)M
(
S
)
Subroutine
POP return
address from stack
P
u
s
h
r
e
t
u
r
n
a
d
d
r
e
s
s
o
n
s
t
a
c
k
M
(
S
)(
P
S
)
Execute RTI
(PS) M (S)
(
S
)
(
S
)
1
(
S
)
(
S
)
+
1
Interrupt
Service Routine
POP contents of
processor status
register from stack
M (S) (PC
H
)
(
S
)
(
S
)
1
M
(
S
)(
P
C
L
)
(
S
)
(
S
)
1
(PC
L
)M (S)
(
S
)
(
S
)
+
1
(
S
)
(
S
)
+
1
(PC
H
)M (S)
POP return
address
from stack
I Flag is set from 0 to 1
Fetch the jump vector
Push return address
on stack
Push contents of processor
status register on stack
Interrupt request
(Note)
I
n
t
e
r
r
u
p
t
d
i
s
a
b
l
e
f
l
a
g
i
s
0
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