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參數(shù)資料
| 型號(hào)： | M30201 |
| 廠商： | Mitsubishi Electric Corporation |
| 英文描述： | SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER |
| 中文描述： | 單片16位CMOS微機(jī) |
| 文件頁(yè)數(shù)： | 45/159頁(yè) |
| 文件大小： | 2319K |
| 代理商： | M30201 |
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Unde
Interrupts
deeopmen
Mitsubishi microcomputers
M30201 Group
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
45
Precautions for Interrupts
(1) Reading address 00000
16
When maskable interrupt is occurred, CPU read the interrupt information (the interrupt number and
interrupt request level) in the interrupt sequence.
The interrupt request bit of the certain interrupt written in address 00000
16
will then be set to “0”.
Reading address 00000
16
by software sets enabled highest priority interrupt source request bit to “0”.
Though the interrupt is generated, the interrupt routine may not be executed.
Do not read address 00000
16
by software.
(2) Setting the stack pointer
The value of the stack pointer immediately after reset is initialized to 0000
16
. Accepting an interrupt
before setting a value in the stack pointer may become a factor of runaway. Be sure to set a value in the
stack pointer before accepting an interrupt. Concerning the first instruction immediately after reset,
generating any interrupts is prohibited.
(3) External interrupt
Either an “L” level or an “H” level of at least 250 ns width is necessary for the signal input to pins INT0
and INT1 regardless of the CPU operation clock.
When changing a polarity of pins INT0 and INT1, the interrupt request bit may become "1". Clear the
interrupt request bit after changing the polarity. Figure 1.33 shows the switching condition of INT inter-
rupt request.
Figure 1.33. Switching condition of INT interrupt request
(4) Changing interrupt control register
See "Changing Interrupt Control Register".
Set the interrupt priority level to level 0
(Disable
INTi
interrupt)
Set the polarity select bit
Clear the interrupt request bit to “0”
Set the interrupt priority level to level 1 to 7
(Enable the accepting of INTi interrupt request)
Clear the interrupt enable flag to “0”
(Disable interrupt)
Set the interrupt enable flag to “1”
(Enable interrupt)
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| M30201F6 | SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER |
| M30201F6FP | SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER |
| M30201F6SP | SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER |
| M30201F6TSP | SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER |
| M30201M2 | SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| M30201_M | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY |
| M30201E6T-XXXFP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER |
| M30201E6T-XXXSP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER |
| M30201E6-XXXFP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER |
| M30201E6-XXXSP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER |
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