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Configuring the Hardware
BATT-14AAAPACKUG Rev. 1.0
10
Freescale Semiconductor, Inc.
5.2
Cell Configuration
The battery pack allows you to configure from three to six cells when used with the MC33772 and from seven to fourteen cells when used
with the MC33771. The exact number of required cells depends on the device version. You may need to place AAA dummy batteries in
some of the battery holders to match the requirements of your device. AAA dummy batteries are available from a number of online
suppliers.
For each configuration, the following table indicates the cells that should contain a dummy battery or a real battery.
Figure 7
shows the
location number of each cell (also shown on the bottom of the PCB.)
Figure 7. Cell Location Numbers
Figure 8. Twelve-cell Configuration Example
Table 2. Cell Connections for all Configurations
Number of cells
3
4
5
6
7
8
9
10
11
12
13
14
Device
MC33772
MC33771
Jumper J4
Pins 1—2
Pins 2—3
Cell1
Batt
Batt
Batt
Batt
Batt
Batt
Batt
Batt
Batt
Batt
Batt
Batt
Cell2
Batt
Batt
Batt
Batt
Batt
Batt
Batt
Batt
Batt
Batt
Batt
Batt
Cell3
Short
Short
Short
Batt
Batt
Batt
Batt
Batt
Batt
Batt
Batt
Batt
Cell4
Short
Short
Batt
Batt
Batt
Batt
Batt
Batt
Batt
Batt
Batt
Batt
Cell5
Short
Batt
Batt
Batt
Short
Short
Short
Short
Short
Short
Short
Batt
Cell6
Batt
Batt
Batt
Batt
Short
Short
Short
Short
Short
Short
Batt
Batt
Cell7
Not Configurable
Short
Short
Short
Short
Short
Batt
Batt
Batt
Cell8
Short
Short
Short
Short
Batt
Batt
Batt
Batt
Cell9
Short
Short
Short
Batt
Batt
Batt
Batt
Batt
Cell10
Short
Short
Batt
Batt
Batt
Batt
Batt
Batt
Cell11
Short
Batt
Batt
Batt
Batt
Batt
Batt
Batt
Cell12
Batt
Batt
Batt
Batt
Batt
Batt
Batt
Batt
Cell13
Batt
Batt
Batt
Batt
Batt
Batt
Batt
Batt
Cell14
Batt
Batt
Batt
Batt
Batt
Batt
Batt
Batt
Short
Insert a 0 V battery or short the battery holder
Batt
Insert a real battery
1
2
3
4
5
6
7
8
9
10
11
12
13
14