MC68HC711xxxx Motorola, MC68HC711xxxx Datasheet - Page 103

• Manufacturer Part Number: MC68HC711xxxx
• Description: Microcontrollers
• Manufacturer: Motorola

M68HC11E Family — Rev. 5
MOTOROLA
SET BIT I IN CCR
FETCH VECTOR
$FFF8, $FFF9
STACK CPU
REGISTERS
Figure 5-5. Processing Flow Out of Reset (Sheet 2 of 2)
SET BIT I IN CCR
FETCH VECTOR
$FFF6, $FFF7
STACK CPU
REGISTERS
RESTORE CPU
FROM STACK
REGISTERS
Resets and Interrupts
Y
Y
Y
Y
FETCH OPCODE
INSTRUCTION?
INSTRUCTION?
EXECUTE THIS
INSTRUCTION?
INSTRUCTION
INTERRUPT
OPCODE?
PENDING?
CCR = 1?
ANY I-BIT
ILLEGAL
BIT I IN
WAI
SWI
RTI
1A
2A
N
N
N
N
N
N
Y
Y
N
RESOLVE INTERRUPT
PRIORITY AND FETCH
VECTOR FOR HIGHEST
PENDING SOURCE
SEE FIGURE 5–2
SET BIT I IN CCR
STACK CPU
REGISTERS
INTERRUPT
PENDING?
Y
ANY
STACK CPU
REGISTERS
Resets and Interrupts
Data Sheet
Interrupts
103