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ATAR090-C Datasheet(PDF) 9 Page - ATMEL Corporation

Part # ATAR090-C
Description  Up to 6 External/Internal Interrupt Sources
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Manufacturer  ATMEL [ATMEL Corporation]
Direct Link  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

ATAR090-C Datasheet(HTML) 9 Page - ATMEL Corporation

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4700C–4BMCU–02/05
ATAR090-C/ATAR890-C
3.2.7.2
Interrupt Latency
The interrupt latency is the time from the occurrence of the interrupt to the interrupt service rou-
tine being activated. In MARC4 this is extremely short (taking between 3 to 5 machine cycles
depending on the state of the core).
Figure 3-6.
Interrupt Handling
7
6
5
4
3
2
1
0
INT5 active
INT7 active
INT2 pending
SWI0
INT2 active
INT0 pending
INT0 active
INT2
RTI
RTI
INT5
INT3 active
INT3
RTI
RTI
RTI
INT7
Time
Main /
Autosleep
Main /
Autosleep
Table 3-1.
Interrupt Priority Table
Interrupt
Priority
ROM Address
Interrupt Opcode
Function
INT0
Lowest
040h
C8h (SCALL 040h)
Software interrupt (SWI0)
INT1
|
080h
D0h (SCALL 080h)
External hardware interrupt, any edge at BP52 or
BP53
INT2
|
0C0h
D8h (SCALL 0C0h)
Timer 1 interrupt
INT3
|
100h
E8h (SCALL 100h)
SSI interrupt or external hardware interrupt at BP40 or
BP43
INT4
|
140h
E8h (SCALL 140h)
Timer 2 interrupt
INT5
|
180h
F0h (SCALL 180h)
Software interrupt (SW15)
INT6
↓
1C0h
F8h (SCALL 1C0h)
External hardware interrupt, at any edge at BP50 or
BP51
INT7
Highest
1E0h
FCh (SCALL 1E0h)
Voltage Monitor (VM) interrupt


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