48
3886 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
MITSUBISHI MICROCOMPUTERS
START/STOP
condition
control register
Oscillation
frequency
f(XIN) (MHz)
Fig. 46 Address data communication format
Fig. 45 Structure of I
2
C START/STOP condition control register
Note: Do not set “000002” or an odd number to the START/STOP condition set bit (SSC4 to SSC0).
Table 14 Recommended set value to START/STOP condition set bits (SSC4–SSC0) for each oscillation frequency
Main clock
divide ratio
System
clock φ
(MHz)
SCL release time
(µs)
Setup time
(µs)
Hold time
(µs)
10
8
8
4
2
2
2
8
2
2
XXX11110
XXX11010
XXX11000
XXX00100
XXX01100
XXX01010
XXX00100
3.2 µs (16 cycles)
3.5 µs (14 cycles)
3.25 µs (13 cycles)
3.0 µs (3 cycles)
3.5 µs (7 cycles)
3.0 µs (6 cycles)
3.0 µs (3 cycles)
6.2 µs (31 cycles)
6.75 µs (27 cycles)
6.25 µs (25 cycles)
5.0 µs (5 cycles)
6.5 µs (13 cycles)
5.5 µs (11 cycles)
5.0 µs (5 cycles)
3.0 µs (15 cycles)
3.25 µs (13 cycles)
3.0 µs (12 cycles)
2.0 µs (2 cycles)
3.0 µs (6 cycles)
2.5 µs (5 cycles)
2.0 µs (2 cycles)
5
4
1
2
1
b
7
S
T
S
P
S
E
L
b
0
I
2
C
S
T
A
R
T
/
S
T
O
P
c
o
n
d
i
t
i
o
n
c
o
n
t
r
o
l
r
e
g
i
s
t
e
r
S
T
A
R
T
/
S
T
O
P
c
o
n
d
i
t
i
o
n
s
e
t
b
i
t
S
C
L
/
S
D
A
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n
t
e
r
r
u
p
t
p
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n
p
o
l
a
r
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t
y
s
e
l
e
c
t
i
o
n
b
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t
0
:F
a
l
l
i
n
g
e
d
g
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a
c
t
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v
e
1
:R
i
s
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g
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d
g
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a
c
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S
C
L
/
S
D
A
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t
e
r
r
u
p
t
p
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s
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l
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c
t
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n
b
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t
0
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D
A
v
a
l
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d
1
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C
L
v
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d
S
T
A
R
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T
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P
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t
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t
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b
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0
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t
u
p
/
H
o
l
d
t
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m
e
s
h
o
r
t
m
o
d
e
1
:S
e
t
u
p
/
H
o
l
d
t
i
m
e
l
o
n
g
m
o
d
e
S
I
SS
I
P
S
S
C
4S
S
C
3S
S
C
2S
S
C
1S
S
C
0
(
S
2
D
:
a
d
d
r
e
s
s
0
0
1
7
1
6
)
SS
l
a
v
e
a
d
d
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s
sR
/
W
AD
a
t
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a
t
a
A
/
A P
7
b
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t
s“
0
”1
t
o
8
b
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t
s1
t
o
8
b
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s
(
1
)
A
m
a
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r
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r
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t
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s
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r
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c
e
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e
r
S
S
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e
a
d
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s
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R
/
W
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a
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aAD
a
t
a
A
P
7
b
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t
s“
1
”1
t
o
8
b
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t
s1
t
o
8
b
i
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s
(
2
)
A
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a
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r
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t
r
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m
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t
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r
S
S
l
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a
d
d
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s
s
1
s
t
7
b
i
t
s
R
/
W
A
7
b
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s“
0
”8
b
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t
s
(
3
)
A
m
a
s
t
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r
-
t
r
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n
s
m
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l
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w
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a
1
0
-
b
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a
d
d
r
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s
s
S
l
a
v
e
a
d
d
r
e
s
s
2
n
d
b
y
t
e
s
A D
a
t
aAD
a
t
a
A
/
A P
1
t
o
8
b
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t
s1
t
o
8
b
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t
s
S
S
l
a
v
e
a
d
d
r
e
s
s
1
s
t
7
b
i
t
s
R
/
W
A
7
b
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s“
0
”8
b
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t
s
(
4
)
A
m
a
s
t
e
r
-
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c
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r
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c
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f
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-
t
r
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s
m
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t
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w
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a
1
0
-
b
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S
l
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d
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n
d
b
y
t
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s
AD
a
t
a
A
A
S
r
S
l
a
v
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a
d
d
r
e
s
s
1
s
t
7
b
i
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s
R
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A
D
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t
aP
S
:
S
T
A
R
T
c
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t
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o
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A
:
A
C
K
b
i
t
S
r
:
R
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s
t
a
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:
S
T
O
P
c
o
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d
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t
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o
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R
/
W
:
R
e
a
d
/
W
r
i
t
e
b
i
t
7
b
i
t
s
“
1
”1
t
o
8
b
i
t
s1
t
o
8
b
i
t
s
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