hd66100 Renesas Electronics Corporation., hd66100 Datasheet - Page 100
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hd66100
Manufacturer Part Number
hd66100
Description
H8/3867 Series
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.HD66100.pdf
(495 pages)
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3.4.2
When a port mode register is rewritten to switch the functions of external interrupt pins, the
following points should be observed.
When an external interrupt pin function is switched by rewriting the port mode register that
controls pins IRQ
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
Interrupt Request
Flags Set to 1
IRR1
IWPR
Notes on Rewriting Port Mode Registers
IRRI4
IRRI3
IRRI2
IRRI1
IRRI0
IWPF7
IWPF6
IWPF5
IWPF4
IWPF3
IWPF2
IWPF1
IWPF0
Conditions under which Interrupt Request Flag is Set to 1
4
to IRQ
Conditions
When PMR1 bit IRQ4 is changed from 0 to 1 while pin IRQ
bit IEG4 = 0.
When PMR1 bit IRQ4 is changed from 1 to 0 while pin IRQ
bit IEG4 = 1.
When PMR1 bit IRQ3 is changed from 0 to 1 while pin IRQ
bit IEG3 = 0.
When PMR1 bit IRQ3 is changed from 1 to 0 while pin IRQ
bit IEG3 = 1.
When PMR1 bit IRQ2 is changed from 0 to 1 while pin IRQ
bit IEG2 = 0.
When PMR1 bit IRQ2 is changed from 1 to 0 while pin IRQ
bit IEG2 = 1.
When PMR1 bit IRQ1 is changed from 0 to 1 while pin IRQ
bit IEG1 = 0.
When PMR1 bit IRQ1 is changed from 1 to 0 while pin IRQ
bit IEG1 = 1.
When PMR3 bit IRQ0 is changed from 0 to 1 while pin IRQ
bit IEG0 = 0.
When PMR3 bit IRQ0 is changed from 1 to 0 while pin IRQ
bit IEG0 = 1.
When PMR5 bit WKP7 is changed from 0 to 1 while pin WKP
When PMR5 bit WKP6 is changed from 0 to 1 while pin WKP
When PMR5 bit WKP5 is changed from 0 to 1 while pin WKP
When PMR5 bit WKP4 is changed from 0 to 1 while pin WKP
When PMR5 bit WKP3 is changed from 0 to 1 while pin WKP
When PMR5 bit WKP2 is changed from 0 to 1 while pin WKP
When PMR5 bit WKP1 is changed from 0 to 1 while pin WKP
When PMR5 bit WKP0 is changed from 0 to 1 while pin WKP
0
, WKP
7
to WKP
0
, the interrupt request flag may be set to 1 at the time
4
4
3
3
2
2
1
1
0
0
is low and IEGR
is low and IEGR
is low and IEGR
is low and IEGR
is low and IEGR
is low and IEGR
is low and IEGR
is low and IEGR
is low and IEGR
is low and IEGR
7
6
5
4
3
2
1
0
is low.
is low.
is low.
is low.
is low.
is low.
is low.
is low.
85
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