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TME-CEM-ECO2-Rev0V4.doc Rev 0.4 Page 12

3.14 External Battery

The board supports a RTC that provides a battery of 3.0 V. A typical battery current in suspend

mode is for the latest ATOM E6xx CPU defined as approx. 24 uA. In S0 mode the RTC is powered by

the power supply.

Recommended battery types are:

Battery Type Capacity

(mAh)

Worst case life time

(years)

CR2032 225 1.1

CR2450 620 2.9

CR2477 1000 4.8

Worst case RTC battery life assuming the processor is always in S5 state.

3.15 On Board LED indicators

LED1: Status

Color: yellow

Function: blink codes (ON) for diagnostics

LED2: Suspend mode (S3-LED)

Color: yellow

Function: Board is in S3 suspend mode (ON)

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Adlink CoreExpress-ECO2 Manual de usuario Pagina 16