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3. Technical Brief
LGE Internal Use Only
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
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. (Fig.2-5-5) shows the schematic of battery temperature measurement part.
Table 3-5-3 BDATA channel spec
Name
Type
Unused
Description
BDATA
Digital Input/Output
Unconnected
current output
C613
24p
24p
C614
K12
XTAL1
XTAL2
K11
K2
SRST_N
SCLK
J3
K3
SDAT
G10
SIMOFF_N
J12
32KHZ
BDATA
H4
TP601
D601
300K
R610
0
R611
1
2
3
4
32.768KHz
X600
MC-146_12_5PF
SRST_n
SCLK
SDAT
RTCCLK
Fig 3-5-5. Battery Temperature Measurement