參數(shù)資料
型號: M34518M4-XXXSP
元件分類: 微控制器/微處理器
英文描述: 4-BIT, MROM, 6 MHz, MICROCONTROLLER, PDIP32
封裝: 0.400 INCH, 1.78 MM PITCH, PLASTIC, SDIP-32
文件頁數(shù): 130/157頁
文件大小: 1783K
代理商: M34518M4-XXXSP
ML610Q411/ML610Q412/ML610Q415 User’s Manual
Chapter 5
Interrupts (INTs)
5 – 13
5.2.12
Interrupt Request Register 3 (IRQ3)
Address: 0F01BH
Access: R/W
Access size: 8 bits
Initial value: 00H
7
6
5
4
3
2
1
0
IRQ3
QTM1
QTM0
R/W
Initial value
0
IRQ3 is a special function register (SFR) to request an interrupt for each interrupt source.
Each IRQ3 request flag is set to “1” regardless of the IE3 and MIE values when an interrupt is generated.
In this case,
an interrupt is requested to the CPU when the related flag of the interrupt enable register (IE3) is set to “1” and the
master interrupt enable flag (MIE) is set to “1”.
By setting the IRQ3 request flag to “1” by software, an interrupt can be generated.
The corresponding flag of IRQ3 is set to “0” by hardware when the interrupt request is accepted by the CPU.
[Description of Bits]
QTM0 (bit 0)
QTM0 is the request flag for the timer 0 interrupt (TM0INT).
QTM0
Description
0
No request (initial value)
1
Request
QTM1 (bit 1)
QTM1 is the request flag for the timer 1 interrupt (TM1INT).
QTM1
Description
0
No request (initial value)
1
Request
Note:
When an interrupt is generated by the write instruction to the interrupt request register (IRQ3) or to the interrupt enable
register (IE3), the interrupt shift cycle starts after the next 1 instruction is executed.
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