参数资料
型号: M38049FFLWG
元件分类: 微控制器/微处理器
英文描述: 8-BIT, FLASH, 16.8 MHz, MICROCONTROLLER, PBGA64
封装: 6 X 6 MM, 0.65 MM PITCH, PLASTIC, LGA-64
文件页数: 2/129页
文件大小: 1721K
代理商: M38049FFLWG
Rev.1.00
Oct 27, 2008
Page 10 of 128
REJ03B0266-0100
3804 Group (Spec.L)
Fig. 8
Register push and pop at interrupt generation and subroutine call
Interrupt request(1)
M(S)
←(PCH)
(S)
←(S) 1
M(S)
←(PCL)
(
S)
(S) 1
...
..
Execute RTS
Subroutine
(S)
←(S) + 1
(PCL)
←M(S)
(S)
←(S) + 1
(PCH)
←M(S)
M(S)
←(PCH)
(S)
←(S) 1
M(S)
←(PCL)
(S)
←(S) 1
M(S)
←(PS)
(S)
←(S) 1
Interrupt
Service Routine
(S)
←(S) + 1
(PS)
←M(S)
(S)
←(S) + 1
(PCL)
←M(S)
(S)
←(S) + 1
(PCH)
←M(S)
Execute JSR
.....
Execute RTI
Push Return Address
on Stack
Push Contents of
Processor
Status Register on Stack
I Flag is Set from
“0” to “1”
Fetch the Jump
Vector
POP Contents of
Processor Status Register
from Stack
POP Return
Address from Stack
POP Return
Address from
Stack
Push Return
Address
on Stack
Note 1 : Condition for acceptance of an interrupt
→ Interrupt enable flag 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
Pop instruction from stack
Accumulator
PHA
PLA
Processor status register
PHP
PLP
相关PDF资料
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M38049FFLHP 8-BIT, FLASH, 16.8 MHz, MICROCONTROLLER, PQFP64
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