MC68HC705J1A Motorola, MC68HC705J1A Datasheet - Page 77

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MC68HC705J1A

Manufacturer Part Number
MC68HC705J1A
Description
Manufacturer
Motorola
Datasheet

Specifications of MC68HC705J1A

Case
DIP-20L
STACKING
Function
Reset
Software
interrupt
(SWI)
External
interrupt
Timer
interrupts
1. The COP watchdog is programmable in the mask option register.
MC68HC705J1A — Rev. 4.0
MOTOROLA
UNSTACKING
ORDER
5
1
CONDITION CODE REGISTER
4
2
3
3
2
4
PROGRAM COUNTER (HIGH BYTE)
1
5
PROGRAM COUNTER (LOW BYTE)
ORDER
Figure 4-6. Interrupt Stacking Order
Table 4-4. Reset/Interrupt Vector Addresses
Local
Source
Mask
Power-on
RESET pin
COP
None
(1)
watchdog
illegal address
User code
None
IRQ/V
pin
IRQE
PP
RTIF bit
RTIE bit
TOF bit
TOIE bit
Resets and Interrupts
Resets and Interrupts
$00C0 (BOTTOM OF STACK)
$00C1
$00C2
ACCUMULATOR
INDEX REGISTER
$00FD
$00FE
$00FF (TOP OF STACK)
Global
Priority
Mask
(1 = Highest)
None
1
Same priority
None
as instruction
I bit
2
I bit
3
Interrupts
Vector
Address
$07FE–$07FF
$07FC–$07FD
$07FA–$07FB
$07F8–$07F9
Technical Data
77

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