Panasonic F77G, MN101C77C user manual Key Input Interrupt

Models: F77G MN101C77C

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Chapter 3 Interrupts

3-3-6 Key Input Interrupt

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).

External Interrupts

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Page 143
Image 143
Panasonic F77G, MN101C77C user manual Key Input Interrupt