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NoName USB drive.

Posted: 26.01.21, 18:48
by MasterT
Does anyone know pinout for this chip?

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Thank you.

Re: NoName USB drive.

Posted: 26.01.21, 20:28
by Roman_TS
Hello.

You can try to parse the traces if you find the layout of CPU which is using in this drive. Here is the guide:

https://blog.acelab.eu.com/pc-3000-flas ... emory.html

Another option - try to check the TSOP-48 pins on the PCB and BGA pads (use BEEP mode on your multimeter). It's the way how to find the pinout and read this chip with Multiboard or with Spiderboard.

Re: NoName USB drive.

Posted: 27.01.21, 12:35
by MasterT
CPU is actually COB, could not find layout this way. So I traced back pinout from TSOP-48. It's actually BGA-63 if anyone else wonders.
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Re: NoName USB drive.

Posted: 27.01.21, 12:58
by Roman_TS
Thank you for sharing the layout. Very useful of other Flash engineers.

Re: NoName USB drive.

Posted: 27.01.21, 13:30
by MasterT
I get chip ID EC 36 A5 C0 which is not in your database.

Re: NoName USB drive.

Posted: 27.01.21, 14:19
by Roman_TS
Can you send full chip ID? You wrote just a first part.

Re: NoName USB drive.

Posted: 27.01.21, 14:31
by MasterT
Here it is:

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Re: NoName USB drive.

Posted: 27.01.21, 15:53
by MasterT
Does it help if i add datasheet for the chip?

https://datasheetspdf.com/pdf-file/2648 ... F1208R0B/1

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Re: NoName USB drive.

Posted: 28.01.21, 11:31
by Roman_TS
Well, it's not a ONFI chip, and not a JDEC.

It's internal Samsung development. This chip is very-very tricky - it reads all sectors by 3 commands;

Command 00 read first 256 bytes
Command 01 read second 256 bytes
Command 50 reads the rest 16 bytes

Command 00 - is a basic command for NAND reading, while commands 01 and 50 are optional and belongs only for this chip. They are not in used and usually you can meet them in very old flash drive where the memory chip was even not a classic NAND Flash (something between NOR and NAND technology)

I'm afraid, existing tools can't read it.
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Re: NoName USB drive.

Posted: 28.01.21, 15:12
by MasterT
Thank you for looking into it.