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16.2 Configuration of DTP/External Interrupt Circuit
The DTP/external interrupt circuit consists of the following four blocks:
• DTP/Interrupt input detector
• Interrupt request level setting register (ELVR)
• DTP/Interrupt factor register (EIRR)
• DTP/Interrupt enable register (ENIR)
n Block diagram of DTP/external interrupt circuit
Interrupt request level setting register (ELVR)
LB7 LA7 LB6 LA6 LB5 LA5 LB4 LA4 LB3 LA3 LB2 LA2 LB1 LA1 LB0 LA0
Selector
Pin
P03/INT7
Pin
P02/INT6
Pin
P01/INT5
Pin
P00/INT4
ER7
EN7
DTP/EXTERNAL INTERRUPT CIRCUIT
Selector
Selector
ER6
ER5
ER4
EN6
EN5
EN4
Fig. 16.1 Block Diagram of DTP/External Interrupt Circuit
Selector
Selector
Selector
ER3
ER2
ER1
EN3
EN2
EN1
16-5
Selector
Selector
ER0
EN0
Pin
P50/INT0
Pin
P51/INT1
Pin
P52/INT2
Pin
P53/INT3
Interrupt
request
number
#16 (10
)
H
#18 (12
)
H
#20 (14
)
H
#22 (16
)
H
#24 (18
)
H
#26 (1A
)
H
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