INTERFACES AND TEST POINTS
Issue 1
Section 2
MCUK991001G8
Revision 0
– 6 –
Technical Guide
Battery Connector
SIM Interface
No.
Name
H/H <=> EXT
Total
Function
H/H Circuit
1
VBAT
<==
1
Positive battery terminal.
Li+ (2 cells in parallel): 3.6 V nom.
NiMH (3 cells in series): 3.6 V nom.
2
BAT_TEMP
<==
1
BAT_TEMP has 2 purposes.
1) Determine whether a battery is attached to
the H/H.
2) Monitor battery temperature for the purposes
of charging.
H: Abnormal battery
M: Li+ or NiMH charging
L: No battery or abnormal battery
3
GND
<==
1
Negative battery terminal
4
BAT_ID
<==
1
BAT_ID is used to identify the type of attached
battery.
H: Li+ or no battery connected.
L: NiMH
Pin
Signal
1
GND
2
5 V
3
Not connected
4
Reset
5
Serial input/output
6
Clock
7
Not connected
8
Not connected
10108-1
ChargerIC VREFOUT
ESD
Vega_ADIN2
ESD
Protection
10109-1
10110-1
