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Pin Assignment
Pin description
* RF:
Connect to Patch Antenna
or
Connect to External Active Antenna
* VIN (DC power input):
This is the main DC supply for a 3.3V +- 5% DC input power module board.
* BATTERY (Backup battery):
This is the battery backup input that powers the SRAM and RTC when main
power is removed. Typical current draw is 15uA. Without an external backup battery,
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