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參數(shù)資料
| 型號(hào)： | M30221M8-XXXFP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 16-BIT, MROM, 10 MHz, MICROCONTROLLER, PQFP120 |
| 封裝： | PLASTIC, LQFP-120 |
| 文件頁數(shù)： | 20/46頁 |
| 文件大?。?/td> | 552K |
| 代理商： | M30221M8-XXXFP |
26
Usage precaution
Mitsubishi microcomputers
M30221 Group
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
Interrupts
(1) Reading address 0000016
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 0000016 will then be set to “0”.
Reading address 0000016 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 0000016 by software.
(2) Setting the stack pointer
The value of the stack pointer immediately after reset is initialized to 000016. 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.
_______
When using the NMI interrupt, initialize the stack point at the beginning of a program. Concerning
_______
the first instruction immediately after reset, generating any interrupts including the NMI interrupt is
prohibited.
_______
(3) The NMI interrupt
_______
The NMI interrupt can not be disabled. Be sure to connect NMI pin to Vcc via a pull-up resistor if
unused.
_______
Do not get either into stop mode with the NMI pin set to “L”.
(4) External interrupt
When the polarity of the INT0 to INT5 pins is changed, the interrupt request bit is sometimes set
to "1". After changing the polarity, set the interrupt request bit to "0".
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| M30221MC-XXXFP | 16-BIT, MROM, 10 MHz, MICROCONTROLLER, PQFP120 |
| M30221M3-XXXFP | 16-BIT, MROM, 10 MHz, MICROCONTROLLER, PQFP120 |
| M30221M8-XXXFP | 16-BIT, MROM, 10 MHz, MICROCONTROLLER, PQFP120 |
| M30221M3-XXXFP | 16-BIT, MROM, 10 MHz, MICROCONTROLLER, PQFP120 |
| M30221MC-XXXFP | 16-BIT, MROM, 10 MHz, MICROCONTROLLER, PQFP120 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| M30222 | 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER |
| M30222FG | 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER |
| M30222FGFP | 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER |
| M30222FGGP | 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER |
| M30222FG-XXXFP | 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER |
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