Question, i.MX28 unused pin handling

[Aemj]

Dear team,

I would like to ask about the unused pin handling of i.MX28.

My customer is in the circuit design phase of i.MX280 board.

(1)

As for the pins for HSADC and LRADC;

In the case of not using HSADC and LRADC, how should one treat the pins of HSADC and LRADC on the board?

(2)

As for BATTERY pin;

In the case of not using charging feature through BATTERY pin, how should one treat the BATTERY pin?

(3)

As for the unused pins other than above,

Please let me know if there are any pins which need the treatment as non-NC when unused?

Thanks,

Miyamoto

[igorpadykov · Accepted solution]

Hi Miyamoto

there are no special connections for case when charger is not used.

Note, by default charger is disabled.

Unused pins (including HSADC and LRADC) can be left unconnected,

it may be recommended to follow

Hardware Design Checklist for i.MX28

Best regards

igor

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