. Interrupt Entry
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Exception Control
MC68HC908QB8 Data Sheet, Rev. 3
Freescale Semiconductor
147
Figure 14-8
. Interrupt Entry
Figure 14-9. Interrupt Recovery
Figure 14-10
. Interrupt Recognition Example
MODULE
DATA BUS
R/W
INTERRUPT
DUMMY
SP
SP 鈥� 1
SP 鈥� 2
SP 鈥� 3
SP 鈥� 4
VECT H
VECT L
START ADDR
ADDRESS BUS
DUMMY
PC 鈥� 1[7:0] PC 鈥� 1[15:8]
X
A
CCR
V DATA H
V DATA L
OPCODE
I BIT
MODULE
DATA BUS
R/W
INTERRUPT
SP 鈥� 4
SP 鈥� 3
SP 鈥� 2
SP 鈥� 1
SP
PC
PC + 1
ADDRESS BUS
CCR
A
X
PC 鈥� 1[7:0] PC 鈥� 1[15:8] OPCODE
OPERAND
I BIT
CLI
LDA
INT1
PULH
RTI
INT2
BACKGROUND ROUTINE
#$FF
PSHH
INT1 INTERRUPT SERVICE ROUTINE
PULH
RTI
PSHH
INT2 INTERRUPT SERVICE ROUTINE
鐩搁棞(gu膩n)PDF璩囨枡
PDF鎻忚堪
MC9S08GT16AMFDE IC MCU 16K FLASH 2K RAM 48-QFN
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