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Chapter 3 Interrupts
III - 40
External Interrupts
Figure 3-3-2 External Interrupt 2 Interface and External Interrupt 3 Interface, Block Diagram
■External Interrupt 2 Interface, External Interrupt 3 Interface, Block Diagram
M
U
X
P22/IRQ2
M
U
X
16-bit timer
0
7
IRQ2IR
IRQ2IE
-
-
REDG2
IRQ2ICR
IRQ2LV1
IRQ2LV0
-
Edge detection
M
U
X
P23/IRQ3
M
U
X
0
7
IRQ3IR
IRQ3IE
-
-
REDG3
IRQ3ICR
IRQ3LV1
IRQ3LV0
-
Edge detection
0
7
EDGSEL0
EDGSEL1
EDGSEL3
EDGSEL4
Reserved
EDGDT
-
-
EDGSEL2
IRQ2 interrupt request
/
16-bit timer
IRQ3 interrupt request/
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