参数资料
型号: 7549
厂商: Renesas Technology Corp.
英文描述: SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
中文描述: 单芯片8位CMOS微机
文件页数: 9/73页
文件大小: 1272K
代理商: 7549
Rev.2.00
REJ03B0202-0200
Mar 05, 2007
Page 9 of 70
7549 Group
PRELIMINARY
Notice: This is not a final specification.
Some parametric limits are subject to change.
Fig 6.
Register push and pop at interrupt generation and subroutine call
Interrupt request
(Note)
M(S)
(PC
H
)
(S)
(S)
1
M(S)
(PC
L
)
(
S
)
(
S
)
1
.
Execute RTS
Subroutine
(S)
(S) + 1
(PC
L
)
M(S)
(S)
(S) + 1
(PC
H
)
M(S)
M(S)
(PC
H
)
(S)
(S)
1
M(S)
(PC
L
)
(S)
(S)
1
M(S)
(PS)
(S)
(S)
1
Interrupt
Service Routine
(S)
(S) + 1
(PS)
M(S)
(S)
(S) + 1
(PC
L
)
M(S)
(S)
(S) + 1
(PC
H
)
M(S)
Execute JSR
.
Execute RTI
Store Return Address
on Stack
Store Contents of
Processor
Status Register on Stack
I Flag “0” to “1”
Fetch the Jump Vector
Restore Contents of
Processor Status Register
Restore Return
Address
Restore Return
Address
Store Return
Address
on Stack
Note
: The condition to enable the interrupt
Interrupt enable bit is “1”
Interrupt disable flag is “0”
On-going Routine
Table 4
Push and pop instructions of accumulator or processor status register
Push instruction to stack
PHA
PHP
Pop instruction from stack
PLA
PLP
Accumulator
Processor status register
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