Panasonic MN101C77C Manual De Usuario

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Chapter 3    Interrupts

External Interrupts

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Key Input Interrupt (External interrupt 4)

This LSI can set port 6 pin (P60 to P67) by 2 bits to key input pin. Key input interrupt can generate an

interrupt at the falling edge, if at least 1 key input pin outputs low level.

Key input pin should be pull-up in advance.

When key input interrupt is used, set the IRQ4SEL flag of the port6 key interrupt control

register (P6IMD) to "1".

When key input interrupt is used, set the REDG4 flag of the external interrupt  4 control

register (IRQ4ICR) to "0" (falling edge).