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LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
3. Technical brief
3.5.2 Battery Temperature Measurement
The BDATA node, the constant current source, feed the battery data output while monitoring the
voltage at the battery data node with GPADC. This battery data is converted to the battery
temperature. (Figure 3-5-5) shows the schematic of battery temperature measurement part.
Name
Type Unused Description
BDATA Digital Input/Output Unconnected current output
Table 3-5-3 BDATA channel spec
Figure 3-5-5. Battery Temperature Measurement
p
0
3
74
4
C
p
0
3
8
4
4
C
D
N
G_
C
TR
TA
B
V
KDS221E_RTK
20
4D
1
3
2
A2
A1_C2
C1
FP
5_
2
1
_
5
1
3
M
C
1
04X
z
H
K
86
7
.
2
3
21
R424
300K
4
H
3
K
3
J
2
K
0
1G
21J
11
K
2
1
K
1L
AT
X
2LA
T
X
ZHK
23
N_
FF
OM
I
S
N_
T
SR
S
K
L
C
S
TA
D
S
A
T
AD
B
p
2
2
24
4C
L
AT
IG
I
D_
D
N
G|DN
G
_
CT
R
K
L
C
C
T
R
K
L
CS
T
A
DS
N_T
S
RS
.
nn
o
C
y
re
t
taB
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