Re: SmartMedia Card will crash my system ?

The maximum current can supply by adapter is about 1000mA, it is working on
about 500mA.

Best regards,
Boki.

"martin griffith" <martingriffith@xxxxxxxxxxxxx>
???????:sv5ob1ph661i0v2sudm9et3lvq2imspev4@xxxxxxxxxx
> On Fri, 24 Jun 2005 20:18:34 +0800, in sci.electronics.design
> <bokiteam@xxxxxxxxxxxxxx> wrote:
>
>>Hi All,
>> I enconuter a big problem, when I insert a SmartMedia memory
>> card
>>to my system, my system power will be shifted, the VCC will be *** down
>>to
>>ground abruptly and then reutrn to VCC, the ground is doing the same
>>thing,
>>from 0V to -5V.
>>
>>my system ( embedded system ) will crash after that, in my case, it will
>>auto reset ( restart) when I insert SmartMedia card, but it will not
>>happen
>>every time, but it happens.
>>
>>I main chip is running 5V, other components is running at 3.3V.
>>
>>Could you please give me any hints?
>>
>>Thank you very much!
>>
>>Best regards,
>>F.Y.
>>
> rebuild the power supply, or find out why the SM is drawing enough
> current to put the PSU into shutdown.
> What is the maximum current the supply can deliver?
> What are the startup parameters for the SM card
> Are the 3V3 componets 5V tolerant?
>
>
> martin


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