Only For Training And Service Purposes - LG GT500 Service Manual

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.
D302
C1
1
A1_C2
3
A2
2
C337
KDS221E_RTK
22p
Name
BDATA
Copyright © 2009 LG Electronics. Inc. All right reserved.

Only for training and service purposes

R320
300K
Fig 3-5-4. Battery Temperature Measurement
Type
Digital Input/Output
Table 3-5-3 BDATA channel spec
3. TECHNICAL DESCRIPTION
SRST_n
BDATA
SCLK
SDAT
BDATA
FGS+
FGS-
Unused Description
Unconnected current output
- 57 -
M2
SRST_N
M1
SCLK
N3
SDAT
A11
BDATA
J14
FGSENSEP
VA605
varistor
J13
FGSENSEN
LGE Internal Use Only