14 external battery, 15 on board led indicators, External battery – ADLINK CoreExpress-ECO2 User Manual

Page 16: On board led indicators

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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)