參數(shù)資料
型號(hào)： M38503M4H
廠商： Mitsubishi Electric Corporation
英文描述： SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
中文描述： 單芯片8位CMOS微機(jī)
文件頁數(shù)： 17/86頁
文件大?。?/td> 1193K
代理商： M38503M4H
17
3850 Group (Spec. H)
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
MITSUBISHI MICROCOMPUTERS
INTERRUPTS
Interrupts occur by 15 sources among 15 sources: six external,
eight internal, and one software.
Interrupt Control
Each interrupt is controlled by an interrupt request bit, an interrupt
enable bit, and the interrupt disable flag except for the software in-
terrupt set by the BRK instruction. An interrupt occurs if the
corresponding interrupt request and enable bits are
“
1
”
and the in-
terrupt disable flag is
“
0
”
.
Interrupt enable bits can be set or cleared by software.
Interrupt request bits can be cleared by software, but cannot be
set by software.
The BRK instruction cannot be disabled with any flag or bit. The I
(interrupt disable) flag disables all interrupts except the BRK in-
struction interrupt.
When several interrupts occur at the same time, the interrupts are
received according to priority.
Interrupt Operation
By acceptance of an interrupt, the following operations are auto-
matically performed:
1. The contents of the program counter and the processor status
register are automatically pushed onto the stack.
2. The interrupt disable flag is set and the corresponding interrupt
request bit is cleared.
3. The interrupt jump destination address is read from the vector
table into the program counter.
I
Notes
When the active edge of an external interrupt (INT
0
–
INT
3
, CNTR
0
,
CNTR
1
) is set, the corresponding interrupt request bit may also be
set. Therefore, take the following sequence:
1. Disable the interrupt
2. Change the interrupt edge selection register
(the timer XY mode register for CNTR
0
and CNTR
1
)
3. Clear the interrupt request bit to
“
0
”
4. Accept the interrupt.
相關(guān)PDF資料
PDF描述
M38513M4 Hook-Up Wire; Conductor Size AWG:26; No. Strands x Strand Size:7 x 34; Jacket Color:Dark Blue; Approval Bodies:UL, CSA; Approval Categories:UL AWM Style 1061; CSA AWM; Conductor Material:Copper RoHS Compliant: Yes
M38513M4-C56FP Hook-Up Wire; Conductor Size AWG:28; No. Strands x Strand Size:7 x 36; Jacket Color:Red; Approval Bodies:UL, CSA; Approval Categories:UL AWM Style 1061; CSA AWM; Conductor Material:Copper; Jacket Material:Polyvinylchloride (PVC) RoHS Compliant: Yes
M3851 Single Chip 8 Bits Microcomputer(8位單片機(jī))
M38512M4 SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
M388504E6SP SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
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參數(shù)描述
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