11 lines
386 B
Markdown
11 lines
386 B
Markdown
## RTC Introduction
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## Coin Cell Battery
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The Location of coin-type battery is shown by this figure:
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The battery type is CR1225, this device has diameter of 12.5mm and 2.5mm thickness.
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In above figure the positive (+) polarity is heading downward to the CPU heatsink side.
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This battery is used only for keep the RTC (Real Time Clock) running.
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