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Chapter 3 Interrupts
III - 38
External Interrupts
3-3 External Interrupts
There are 5 external interrupts in this LSI. The circuit (external interrupt interface) for the external interrupt input
signal, is built-in between the external interrupt input pin and the interrupt controller block. This external inter-
rupt interface can manage to do with any kind of external interrupts.
3-3-1 Overview
Table 3-3-1 External Interrupt Functions
Table 3-3-1 shows the list of functions which external interrupts 0 to 4 can be used.
External External External External External
interrupt 0 interrupt 1 interrupt 2 interrupt 3 interrupt 4
(IRQ0) (IRQ1) (IRQ2) (IRQ3) (IRQ4)
External interrupt P24,
input pin P60-P67
Programmable active
edge interrupt (P24)
Both edges interrupt
(P60-P67)
Noise filter built-in
AC zero cross
detection
P23
----
---Key input interrupt -
P20 P21 P22