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 Post subject: SD Card Power Voltages
PostPosted: September 12th, 2016, 19:03 
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Joined: June 11th, 2013, 17:01
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Location: USA
When testing failed SD Cards (not there are many components to check) what voltages in general do they use? I currently have a 4GB Kingston SDHC Card.

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 Post subject: Re: SD Card Power Voltages
PostPosted: September 12th, 2016, 23:30 
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Joined: July 30th, 2012, 3:37
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Location: Fairfield, CT USA
3.3v, maybe 1.8v depending on the device.

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 Post subject: Re: SD Card Power Voltages
PostPosted: September 13th, 2016, 12:22 
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jeremyb wrote:
3.3v, maybe 1.8v depending on the device.

Thanks Jeremy.

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 Post subject: Re: SD Card Power Voltages
PostPosted: October 9th, 2016, 9:53 
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Location: CDRLabs @ Chandigarh [ India ]
ddrecovery wrote:
jeremyb wrote:
3.3v, maybe 1.8v depending on the device.

Thanks Jeremy.


Well ,
When you apply a multimeter to a sd card testing for shorts between ground and VCC its generally 3 volts or 1.5 volts from multimeter ,but they operate at 3.3 volts imho .Starting to work on more nand flash memories now ddrecovery but late then you started :D

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 Post subject: Re: SD Card Power Voltages
PostPosted: October 9th, 2016, 10:38 
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I thought Tim was referring to the internals, not the interface. Internally, some use 1.8v Vcc or VccQ, mostly 3.3v
Obviously if it's short to ground you're SOL with the NAND.

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 Post subject: Re: SD Card Power Voltages
PostPosted: October 9th, 2016, 12:26 
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Joined: August 15th, 2006, 3:01
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Location: CDRLabs @ Chandigarh [ India ]
jeremyb wrote:
I thought Tim was referring to the internals, not the interface. Internally, some use 1.8v Vcc or VccQ, mostly 3.3v
Obviously if it's short to ground you're SOL with the NAND.


Well,
Finally i started to work with one company who has Ver 3.0 Pc3k Flash ,I Have Still Not Updated Mine ,So Now Learning At Rapid Speed .But I Have Many Cases To Handle ,Solved One Case With Help Of Roman At PC3K But i am happy as i had done many steps properly before he came in . Second Case I Took Out Was PITA GNd And VCC Short :( .I Would Start Learning To Trace Pinouts In Monolith .Can You Suggest a Good Logic Analyser Please

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