参数资料
型号: MC68HC11D0CP3
厂商: MOTOROLA INC
元件分类: 微控制器/微处理器
英文描述: 8-BIT, MROM, 3 MHz, MICROCONTROLLER, PDIP40
封装: PLASTIC, DIP-40
文件页数: 79/124页
文件大小: 1481K
代理商: MC68HC11D0CP3
MOTOROLA
RESETS AND INTERRUPTS
MC68HC11D3
5-14
TECHNICAL DATA
Figure 5-2 Interrupt Priority Resolution (1 of 2)
INT PRIORITY RES P1
2A
BEGIN
SET X BIT IN CCR
FETCH VECTOR
$FFF4, FFF5
X BIT
IN CCR
SET ?
YES
NO
XIRQ PIN
LOW ?
YES
NO
HIGHEST
PRIORITY
INTERRUPT
?
YES
NO
IRQ ?
YES
NO
FETCH VECTOR
$FFF2, FFF3
FETCH VECTOR
$FFF0, FFF1
RTII = 1 ?
YES
NO
REAL-TIME
INTERRUPT
?
YES
NO
FETCH VECTOR
$FFEE, FFEF
IC1I = 1 ?
YES
NO
TIMER
IC1F ?
YES
NO
FETCH VECTOR
$FFEC, FFED
IC2I = 1 ?
YES
NO
TIMER
IC2F ?
YES
NO
FETCH VECTOR
$FFEA, FFEB
IC3I = 1 ?
YES
NO
TIMER
IC3F ?
YES
NO
FETCH VECTOR
$FFE8, FFE9
OC1I = 1 ?
YES
NO
TIMER
OC1F ?
YES
NO
2B
FETCH VECTOR
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