LG KT520 Service Manual page 67

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. (Fig.3-5-5) shows the schematic of battery temperature measurement part.
Name Type
BDATA Digital Input/Output
LGE Internal Use Only
C612 C613
24p 24p
Fig 3-5-5. Battery Temperature Measurement
Table 3-5-3 BDATA channel spec
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RTCCLK
SRST_n
SCLK
SDAT
Unused
Unconnected
Copyright © 2008 LG Electronics. Inc. All right reserved.
K12
XTAL1
K11
XTAL2
J12
32KHZ
G10
SIMOFF_N
K2
SRST_N
J3
SCLK
K3
SDAT
H4
BDATA
Description
current output
Only for training and service purposes