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fzabkar
 Post subject: Re: NAND CHANNEL configuration of Crucial C300 HELP PLEASE
PostPosted: August 22nd, 2023, 15:08 
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Sorry, I meant the other side of the pullup resistor, not the PCB. Does it connect to the R/B* ball of the NAND chip? If you don't understand what I mean, then I don't know how else to explain it to you. I've provided an annotated photo clip. What more do you need?

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fzabkar
 Post subject: Re: NAND CHANNEL configuration of Crucial C300 HELP PLEASE
PostPosted: August 22nd, 2023, 15:37 
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Code:
                          Vio
                          -+-
                           |
                          .-.
                          | | pullup
                          | | resistor
  .---------------.       '-'       .--------------.
  |               |        |        |              |
  |               |        |    R/B*|              |
  |     MCU       |<-------+--------|      NAND    |
  |               |       X         |              |
  |               |                 |              |
  '---------------'        o        '--------------'
                           |
                          ===
                          GND

AISI, if you short point X to ground, PC3000 can do one of two things during its ID scan:

1. PC3000 hangs until the short is released.
2. PC3000 times out, reports an error, and moves on to the next channel.

Of course, you first need to confirm whether my circuit is correct. Don't proceed otherwise.

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Data-Salvage
 Post subject: Re: NAND CHANNEL configuration of Crucial C300 HELP PLEASE
PostPosted: September 3rd, 2023, 22:46 
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Joined: November 28th, 2021, 22:35
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Sir i find out the defective chips with RUSOLUT. some chip cannot be recognized. maybe can be clone with UFI BOX?
any advice?
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Data-Salvage
 Post subject: Re: NAND CHANNEL configuration of Crucial C300 HELP PLEASE
PostPosted: September 3rd, 2023, 22:46 
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Joined: November 28th, 2021, 22:35
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Location: japan
Lardman wrote:
You can either wait for someone who has direct experience of pulling nand form a c300 or you can find out by experimenting. The chip you have labelled 0 is where I'd start.

If you remove nand you have marked 0 or 1 and recheck it will give you an idea of the channel layout.



Sir i find out the defective chips with RUSOLUT. some chip cannot be recognized. maybe can be clone with UFI BOX?
any advice?
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