
7534 Group
Rev.3.00 Oct 23, 2006 page 51 of 53
REJ03B0099-0300
Fig. 55 Handling of VCC, USBVREFOUT pins of M37534E8SP, M37534M4-XXXSP, M37534RSS
Outline PRDP0042BA-A
1
1
2
3
4
6
7
8
9
11
1
1
1
1
5
1
1
1
3
3
3
3
31
3
2
2
2
2
2
3
2
2
2
1
2
21
4
41
4
3
3
3
P
0
0
C
N
V
S
S
X
OUT
X
I
N
V
S
S
P
0
1
P
0
2
P
0
3
P
0
4
P
3
0
(
L
E
D
0
)
Vcc
V
R
E
F
P
0
5
P1
2
/S
CLK
P
2
5
/
A
N
5
P
2
6
/
A
N
6
P
1
3
/
S
D
A
T
A
P
1
4
/
C
N
T
R
0
P2
2
/AN
2
N
C
P
2
1
/
A
N
1
P
2
0
/
A
N
0
P
3
1
(
L
E
D
1
)
P
2
3
/
A
N
3
P
2
4
/
A
N
4
P
0
6
P0
7
P3
7
/INT
0
RESET
M
3
7
5
3
4
E
8
S
P
M
3
7
5
3
4
M
4
-
X
X
X
S
P
M
3
7
5
3
4
R
S
S
P3
5
(LED
5
)
P
3
4
(
L
E
D
4
)
P3
3
(LED
3
)
P
3
2
(
L
E
D
2
)
U
S
B
V
R
E
F
O
U
T
P
1
0
/
R
X
D
/
D
-
P
1
1
/
T
X
D
/
D
+
P
2
7
/
A
N
7
1.5kΩ
Reason of ➀ is to reduce the effect by switcing noise of microcomputer to the
analog circuit generating USBV
REFOUT output. Use the bigger capacitor and
connect to device at the shortest distance.
Reason of ➁ is to prevent the instability of the USBV
REFOUT output due to
external noise.
➁
➀
P1
6
P1
5
P
4
0
P
4
1
P
3
6
(
L
E
D
6
)
/
I
N
T
1
C
o
n
n
e
c
t
a
c
a
p
a
c
i
t
o
r
t
o
a
d
e
v
i
c
e
a
s
c
l
o
s
e
a
s
p
o
s
s
i
b
l
e
.
F
o
r
t
h
e
c
a
p
a
c
i
t
o
r
,
a
c
e
r
a
m
i
c
c
a
p
a
c
i
t
o
r
o
r
a
n
e
l
e
c
t
r
o
l
y
t
i
c
c
a
p
a
c
i
t
o
r
o
f
0
.
2
2
µF
i
s
r
e
c
o
m
m
e
n
d
e
d
.
Connect a bypass capacitor to a device
as close as possible. For the capacitor,
a ceramic capacitor or an electrolytic
capacitor of 1.0 µF is recommended.
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