參數(shù)資料
型號(hào): MC68HC705L16
廠商: 飛思卡爾半導(dǎo)體(中國(guó))有限公司
英文描述: Microcontrollers
中文描述: 微控制器
文件頁數(shù): 41/146頁
文件大?。?/td> 772K
代理商: MC68HC705L16
Interrupts
MC68HC05L16 MC68HC705L16 Data Sheet, Rev. 4.1
Freescale Semiconductor
41
Figure 4-2
shows an example of IRQ1 interrupt. In this case, the interrupt occurs
after
execution the
instruction following the instruction which sets IRQ1E bit. The similar action occurs against IRQ2 and KWI
interrupts.
Figure 4-2. IRQ Timing Delay
This problem can be solved by using a software patch like
Figure 4-3
. A similar procedure could be used
for IRQ2 or KWI.
Figure 4-3. Software Patch for IRQ1
4.2.4 Timer 1 Interrupt
Three timer 1 interrupts (TOI, ICI, and OC1I) share the same interrupt vector at $FFF6 and $FFF7. See
9.2 Timer 1
.
4.2.5 Timer 2 Interrupt
Two timer 2 interrupts (TI2I and OC2I) share the same interrupt vector at $FFF4 and $FFF5. See
9.3.1
Timer Control Register 2
.
4.2.6 SSPI Interrupt
The SSPI transfer complete interrupt uses the vector at $FFF2 and $FFF3. See
Chapter 8 Simple Serial
Peripheral Interface (SSPI)
.
4.2.7 Timebase Interrupt
The timebase interrupt uses the vector at $FFF0 and $FFF1. See
7.5 Timebase
.
CLI
BSET IRQ1E, INTCR
LDA
#$55
.
.
.
.
.
Interrupt occurs
after
this instruction
IRQ1 interrupt pending
CLI
BSET IRQ1E, INTCR
NOP
LDA
#$55
.
.
.
.
Interrupt occurs
after
this instruction
IRQ1 interrupt pending
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