MC68HC705J1ACPE Datasheet, PDF (77/162 Pages) Freescale Semiconductor, Inc – Freescale Semiconductor, Inc.

Freescale Semiconductor, Inc.
Resets and Interrupts
Interrupts
UNSTACKING
•
ORDER
•
•
$00C0 (BOTTOM OF STACK)
$00C1
$00C2
•
•
•
5
1
4
2
3
3
2
4
1
5
CONDITION CODE REGISTER
ACCUMULATOR
INDEX REGISTER
PROGRAM COUNTER (HIGH BYTE)
PROGRAM COUNTER (LOW BYTE)
STACKING
ORDER
•
•
•
•
•
•
$00FD
$00FE
$00FF (TOP OF STACK)
Figure 4-6. Interrupt Stacking Order
Table 4-4. Reset/Interrupt Vector Addresses
Function
Source
Local Global
Priority
Mask Mask (1 = Highest)
Vector
Address
Reset
Power-on
RESET pin
COP
watchdog⁽¹⁾
illegal address
None
None
1
$07FE–$07FF
Software
interrupt
(SWI)
User code
None
None
Same priority
as instruction
$07FC–$07FD
External
interrupt
IRQ/V_PP pin
IRQE
I bit
2
$07FA–$07FB
Timer
interrupts
RTIF bit
TOF bit
RTIE bit
TOIE bit
I bit
3
$07F8–$07F9
1. The COP watchdog is programmable in the mask option register.
MC68HC705J1A — Rev. 4.0
Resets and Interrupts
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Technical Data