Panasonic MN101C77C, F77G user manual External Interrupts, External Interrupt Functions

Chapter 3 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 shows the list of functions which external interrupts 0 to 4 can be used.

Table 3-3-1 External Interrupt Functions

	External	External	External	External	External
	interrupt 0	interrupt 1	interrupt 2	interrupt 3	interrupt 4
	(IRQ0)	(IRQ1)	(IRQ2)	(IRQ3)	(IRQ4)
External interrupt	P20	P21	P22	P23	P24,
input pin					P60-P67
Programmable active
edge interrupt					(P24)
Both edges interrupt
Key input interrupt	-	-	-	-	(P60-P67)
Noise filter built-in
AC zero cross	-		-	-	-
detection

III- 38 External Interrupts