參數(shù)資料
型號： M30100M3-XXXFP
元件分類： 微控制器/微處理器
英文描述： 16-BIT, MROM, 16 MHz, MICROCONTROLLER, PQFP32
封裝： 7 X 7 MM, 0.80 MM PITCH, PLASTIC, LQFP-32
文件頁數(shù)： 118/164頁
文件大?。?/td> 3302K
代理商： M30100M3-XXXFP
Under
development
Tentative Specifications REV.E1
Specifications in this manual are tentative and subject to change.
Mitsubishi microcomputers
M30100/M30102 Group
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
Interrupts
56
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)
Precautions for Interrupts
(1) Reading address 0000016
When maskable interrupt is occurred, CPU reads 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”.
Even if the address 0000016 is read out by software, “0” is set to the enabled highest priority interrupt
source request bit. Therefore, interrupt can be canceled and unexpected interrupt can occur.
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. 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 to
_______
INT3 regardless of the CPU operation clock.
________
_______
When changing a polarity of pins INT0 to INT3, the interrupt request bit may become "1". Clear the
______
interrupt request bit after changing the polarity. Figure 1.12.17 shows the switching condition of INT
interrupt request.
(4) Changing interrupt control register
See "Rewrite The Interrupt Control Register".
______
Figure 1.12.17. Switching condition of INT interrupt request
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