HD6433636SW datasheet(91/418 Pages) RENESAS

91 / 418 page

When an external interrupt pin function is switched by rewriting the port mode register that

controls these pins (

IRQ

4 to IRQ0, and WKP7 to WKP0), the interrupt request flag may be set to 1

at the time the pin function is switched, even if no valid interrupt is input at the pin. Be sure to

clear the interrupt request flag to 0 after switching pin functions. Table 3.5 shows the conditions

under which interrupt request flags are set to 1 in this way.

Table 3.5

Conditions under which Interrupt Request Flag is Set to 1

Interrupt Request

Flags Set to 1

Conditions

IRR1

IRRI4

• When PMR2 bit IRQ4 is changed from 0 to 1 while pin IRQ

4 is low and

IEGR bit IEG4 = 0.

• When PMR2 bit IRQ4 is changed from 1 to 0 while pin IRQ

4 is low and

IEGR bit IEG4 = 1.

IRRI3

• When PMR1 bit IRQ3 is changed from 0 to 1 while pin IRQ

3 is low and

IEGR bit IEG3 = 0.

• When PMR1 bit IRQ3 is changed from 1 to 0 while pin IRQ

3 is low and

IEGR bit IEG3 = 1.

IRRI2

• When PMR1 bit IRQ2 is changed from 0 to 1 while pin IRQ

2 is low and

IEGR bit IEG2 = 0.

• When PMR1 bit IRQ2 is changed from 1 to 0 while pin IRQ

2 is low and

IEGR bit IEG2 = 1.

IRRI1

• When PMR1 bit IRQ1 is changed from 0 to 1 while pin IRQ

1 is low and

IEGR bit IEG1 = 0.

• When PMR1 bit IRQ1 is changed from 1 to 0 while pin IRQ

1 is low and

IEGR bit IEG1 = 1.

IRRI0

• When PMR2 bit IRQ0 is changed from 0 to 1 while pin IRQ

0 is low and

IEGR bit IEG0 = 0.

• When PMR2 bit IRQ0 is changed from 1 to 0 while pin IRQ

0 is low and

IEGR bit IEG0 = 1.

IWPR

IWPF7

When PMR5 bit WKP7 is changed from 0 to 1 while pin

WKP

7 is low

IWPF6

When PMR5 bit WKP6 is changed from 0 to 1 while pin

WKP

6 is low

IWPF5

When PMR5 bit WKP5 is changed from 0 to 1 while pin

WKP

5 is low

IWPF4

When PMR5 bit WKP4 is changed from 0 to 1 while pin

WKP

4 is low

IWPF3

When PMR5 bit WKP3 is changed from 0 to 1 while pin

WKP

3 is low

IWPF2

When PMR5 bit WKP2 is changed from 0 to 1 while pin

WKP

2 is low

IWPF1

When PMR5 bit WKP1 is changed from 0 to 1 while pin

WKP

1 is low

IWPF0

When PMR5 bit WKP0 is changed from 0 to 1 while pin

WKP

0 is low

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