2 external interrupt control register 2 (eic2), External interrupt control register 2 (eic2) – FUJITSU F2MC-8L F202RA User Manual
Page 251
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CHAPTER 10 EXTERNAL INTERRUPT CIRCUIT 1 (EDGE)
10.4.2
External Interrupt Control Register 2 (EIC2)
As with external interrupt control register 1 (EIC1), external interrupt control register 2
(EIC2) comprises bits for edge polarity selection and interrupt control for the INT12
external interrupt pin.
■
External Interrupt Control Register 2 (EIC2)
Figure 10.4-3 External Interrupt Control Register 2 (EIC2)
EIE2
0
1
S
L21
S
L20
0
0
0
1
1
0
1
1
EIR2
0
1
b
it7
b
it6
b
it5
b
it4
b
it
3
b
it2
b
it1
b
it0
0025
H
EIR2
S
L21
S
L20 EIE2
----0000
B
R/W
R/W
R/W
R/W
R/W : Re
a
d
ab
le/Writ
ab
le
: Initi
a
l v
a
l
u
e
: Un
us
ed
Addre
ss
Initi
a
l v
a
l
u
e
Interr
u
pt re
qu
e
s
t en
ab
le
b
it 2
Di
sab
le
s
interr
u
pt re
qu
e
s
t o
u
tp
u
t
s
En
ab
le
s
interr
u
pt re
qu
e
s
t o
u
tp
u
t
s
Edge pol
a
rity
s
election
b
it
s
2
Edge detection OFF
Ri
s
ing edge
F
a
lling edge
Both edge
s
Extern
a
l interr
u
pt re
qu
e
s
t fl
a
g
b
it 2
When
b
eing re
a
d
When
b
eing written
S
ign
a
l inp
u
t with
s
pecified edge
or edge
s
not detected
Thi
s
b
it i
s
cle
a
red
S
ign
a
l inp
u
t with
s
pecified edge
or edge
s
detected
No ch
a
nge, not
a
ffecting other
oper
a
tion