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: 78/124页
文件大小: 1481K
代理商: MC68HC11D0CP3
MC68HC11D3
RESETS AND INTERRUPTS
MOTOROLA
TECHNICAL DATA
5-13
Figure 5-1 Processing Flow out of Reset (2 of 2)
BIT I IN
CCR = 1?
2A
Y
N
ANY I-BIT
INTERRUPT
Y
N
PENDING?
FETCH OPCODE
ILLEGAL
OPCODE?
Y
N
WAI
Y
N
INSTRUCTION?
SWI
INSTRUCTION?
Y
N
RTI
INSTRUCTION?
Y
N
EXECUTE THIS
INSTRUCTION
STACK CPU
REGISTERS
ANY
N
Y
INTERRUPT
PENDING?
SET BIT I IN CCR
RESOLVE INTERRUPT
PRIORITY AND FETCH
VECTOR FOR HIGHEST
PENDING SOURCE
STACK CPU
REGISTERS
SET BIT I IN CCR
FETCH VECTOR
$FFF8, $FFF9
STACK CPU
REGISTERS
SET BIT I IN CCR
FETCH VECTOR
$FFF6, $FFF7
RESTORE CPU
REGISTERS
FROM STACK
1A
STACK CPU
REGISTERS
SEE FIGURE 5–2
FLOW OUT OF RESET P2
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