Dumping nand flash memory

[jermy]

OK, this is weird.

The SanDisk ( SDTNQGAMA-008G ) i'm trying to read is known as Toshiba

I can't also find that specific datasheet

already answered above

just noticed the NAND is a Sandisk.. what is the actual part number?.. SDTN...

Some of these chips are 16bit and some are "16-8"( 8-bit chips wired on 16-bit bus ). Also some Sandisk need to have pin 38 isolated.

[HaQue]

The ID for this chip should be "45 de 94 93" BUT it is DDR chip. does the .py support DDR Chips?

Usually a utility will look at the first byte of the returned ID and just look it up in a manufacturer list. 2C for Intel/Micron or Spektec, 45 for Sandisk, ec for Samsun, ad for Hynix etc..

but this is not a hard rule, some 0x45 are Toshiba or Sandisk.

[DRUG]

I'm not sure about the DDR chip support, I guess I'll buy 1 piece of the chip used in the demonstration just to see if everything runs smooth.

[HaQue]

if you have any old flash drives, SD cards, check the NANDs with the method I told you in PM. Even set top boxes, dvd players, TV's etc, just have a look if any firmware chips are NAND. You should be able to find something at home, or your local cheap s/h shop.

[DRUG]

The ID for this chip should be "45 de 94 93" BUT it is DDR chip. does the .py support DDR Chips?

Usually a utility will look at the first byte of the returned ID and just look it up in a manufacturer list. 2C for Intel/Micron or Spektec, 45 for Sandisk, ec for Samsun, ad for Hynix etc..

but this is not a hard rule, some 0x45 are Toshiba or Sandisk.

Got this from the .py readme "operations like ECC check and on-image pattern recognition, extraction and rewriting for u-Boot bootloader and JFFS2 file system is supported." no mention to DDR chips at all.

I've been using that method to identify ID's and such, I've found a few models of the testing chips I currently have over there telling me the correct size, pages, banks etc.

[DRUG]

I'm starting to see progress, after all it was just a matter of re-wiring some pins and making sure all the tini pads were touching them.

Attachments

[jermy]

I'm starting to see progress,

i don't see you're getting the right ID

[DRUG]

I'm starting to see progress,

i don't see you're getting the right ID

well from 0x0 on all to this, seems a progress.

Is it possible that I have a sandisk chip with ID 0Xd6 and another one with 0x45 ? (what may cause this ? chip de-soldering not perfect ?)

[jermy]

i assume it's not the right configuration
whats the model ?

[HaQue]

Why is the ID only 1 byte?

[DRUG]

i assume it's not the right configuration
whats the model ?

It's SDTNQCBMA-008G , a sandisk chip, strangely appears as Toshiba...

[DRUG]

Why is the ID only 1 byte?

The ID always comes in that format, its like it shows on the pdf..

[DRUG]

Sorry to dig this out.

I've came to master this technique, however, I will never recomend this learning path.

Do yourself a favour and buy pc3k, FE or rusolut. The hours you will spend here, just to tinker with reading voltage will be retarded.

Pm me for further info if you are into learning this the hard way.

[HaQue]

Sorry to dig this out.

I've came to master this technique, however, I will never recomend this learning path.

Do yourself a favour and buy pc3k, FE or rusolut. The hours you will spend here, just to tinker with reading voltage will be retarded.

Pm me for further info if you are into learning this the hard way.

yes, my board is still sitting in it's box...

[DRUG]

Sorry to dig this out.

I've came to master this technique, however, I will never recomend this learning path.

Do yourself a favour and buy pc3k, FE or rusolut. The hours you will spend here, just to tinker with reading voltage will be retarded.

Pm me for further info if you are into learning this the hard way.

yes, my board is still sitting in it's box...

Obviously you would ever understand this way earlier then me but spare yourself the trouble and keep it in the box.