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RTC-72421/72423
Switching characteristics (AC characteristics)
1. When ALE is used
Write mode
I
e t
m
C
S
s
t e
u -
p
i t
m
e
1
A
d
d
e r
s s
s
t e
u -
p
i t
m
e
b
e
o f
A
d
d
e r
s s
h
o
d l
i t
m
e
a
t f
r e
A
A
L
E
p
u
s l
e
w
d i
h t
A
L
E
s
t e
u -
p
i t
m
e
b
e
o f
e r
w
W
i r
e t
p
u
s l
e
w
d i
h t
A
L
E
s
t e
u -
p
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m
e
a
t f
r e
w
i r
e t
D
a
a t
n i
p
t u
s
t e
u -
p
i t
m
e
b
e
D
a
a t
n i
p
t u
h
o
d l
i t
m
e
a
t f
r e
C
S
h
o
d l
i t
m
e
1
W
i r
e t
e r
c
o
v
e
y r
i t
m
e
Read mode
I
e t
m
C
S
s
t e
u -
p
i t
m
e
1
A
d
d
e r
s s
s
t e
u -
p
i t
m
e
b
e
o f
A
d
d
e r
s s
h
o
d l
i t
m
e
a
t f
r e
A
A
L
E
p
u
s l
e
w
d i
h t
A
L
E
s
t e
u -
p
i t
m
e
b
e
o f
e r
e r
A
L
E
s
t e
u -
p
i t
m
e
a
t f
r e
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a
D
a
a t
o
u
p t
u
t t
a r
n
f s
r e
i t
m
e
D
a
a t
o
u
p t
u
f t
o l
t a
n i
g
t
a r
n
f s
C
S
h
o
d l
i t
m
e
1
R
e
a
d
e r
c
o
v
e
y r
i t
m
e
(V
=5V±0.5V,RTC-72421:Ta=-10°C to +70°C, RTC-72423:Ta=-40°C to +85°C)
DD
e r
A
L
E
t
S
L
E
t
i r
e t
t
S
t
S
o f
e r
w
i r
e t
t
w
i r
e t
(V
=5V±0.5V,RTC-72421:Ta=-10°C to +70°C, RTC-72423:Ta=-40°C to +85°C)
DD
e r
A
L
E
t
S
L
E
t
a
d
t
S
d
t
S
a
t f
r e
e r
a
d
t
r e
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m
e
a
t f
r e
e r
a
d
t
S
y
m
b
l o
C
o
n
d
t i
o i
n
t
(
C
S
)
S
U
1
A (
A -
L
) E
U
A (
L
- E
) A
H
t
A (
L
) E
W
A (
L
- E
W
)
U
t
(
W
)
W
(
W
A -
L
) E
U
(
D
-
W
)
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U
t
(
W
-
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)
H
t
(
C
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)
H
1
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)
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b
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C
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d
t i
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(
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)
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1
A (
A -
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A (
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) A
H
t
A (
L
) E
W
A (
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- E
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)
U
(
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A -
L
) E
U
(
R
-
Q
)
C
L
=
1
5
0
p
F
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Z
V
(
R
-
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)
P
V
Z
t
(
C
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)
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1
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(
W
)
R
E
C
Page-6
M
I
. N
M
A
. X
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0
0
0
5
0
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0
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0
0
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2
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0
M
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. N
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. X
1
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0
5
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1
2
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7
0
2
0
0
1
0
0
0
U
n
t i
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U
n
t i
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s
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