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LGE Internal Use Only
Copyright © 2008 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.3-5-5) shows the schematic of battery temperature measurement part.
3
A2
2
D601
300K
R606
K12
XTAL1
XTAL2
K11
G10
SIMOFF_N
K2
SRST_N
SCLK
J3
K3
SDAT
BDATA
H4
J12
32KHZ
4
32.768KHz
X600
MC-146_12_5PF
1
2
3
24p
C612
C613
24p
RTCCLK
SRST_n
SCLK
SDAT
Fig 3-5-5. Battery Temperature Measurement
Name Type
Unused
Description
BDATA Digital
Input/Output
Unconnected
current
output
Table 3-5-3 BDATA channel spec
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