RoyalTek RDR-3200 GPS Receiver User Manual


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RDR-3200 User Manual
Figure 2.
Backup Battery Circuit
V_3V3
Battery SCH
PIN3(RTC_3V3)
B1
12
R40 220
2
1
D12
RB705D
TP37
1
1
3
2
1
D13
RB705D
3
RoyalTek Confidential
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