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INTERFACES AND TEST POINTS
No.
Name
19
GND
20
GND
21
GND
22
CHARGE_ON
23
EXT_PWR
Battery Connector
No.
Name
1
VBAT
2
BAT_TEMP
3
GND
4
BAT_ID
SIM Interface
Pin
Signal
1
GND
2
5 V
3
Not connected
4
Reset
5
Serial input/output
6
Clock
7
Not connected
8
Not connected
Issue A
Revision 0
http://cxema.ru
H/H <=> EXT
Total
Function
==>
6
Ground connection of Dual Charger
==>
6
Ground connection of Dual Charger
==>
6
Ground connection of Dual Charger
<=>
1
The Dual Charger shall hold CHARGE_ON to
the middle level unit a H/H is inserted into the
front slot.
H: 2.0<=V<=3.0 volts; Dual Charger detects
connection of H/H
M: 1.0<=V<2.0 volts; Unconnected
L: 0.0<=V<1.0 volts; Dual Charger detects
connection of H/H
<==
2
The Dual Charger shall control switching of the
power supply to the front slot (corresponds to
EXT_PWR) based on the state of the
CHARGE_ON signal.
H: EXT_PWR supplied
L: When the H/H can determine whether or not
to set CHARGE_ON. After the insertion of the
H/H, EXT_PWR shall be subsequently supplied
TBA
within
H/H <=> EXT
Total
Function
<==
1
Positive battery terminal.
Li+ (2 cells in parallel): 3.6 V nom.
NiMH (3 cells in series): 3.6 V nom.
<==
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
<==
1
Negative battery terminal
<==
1
BAT_ID is used to identify the type of attached
battery.
H: Li+ or no battery
L: NiMH
hours
Section 2
– 12 –
H/H Circuit
Refer to pin 1
Refer to pin 1
Refer to pin 1
330
CHARGE_ON
10k
0.1µ
10107-1
Refer to pin 8
H/H Circuit
10108-1
ChargerIC VREFOUT
ESD
Vega_ADIN2
ESD
Protection
10109-1
10110-1
MCUK990801G8
Technical Guide
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