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回复 2# Artema

Compare whether the NAND parameters are the same as TNM5000
   

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2021-12-4 09:22

admin

回复 2# Artema
some bits flip is normal about nand.
error after block: 40

It seems to be wrong. In this case, there is obviously a programmer reading error. If such an error occurs during T56 reading, the auto verification after reading will not pass.

admin

回复 5# Artema


   this is normal,  Nand bits flip.  these error bits can be corrected by ECC correction when running.
  search on google about Nand bit flip.
  Related settings on the software:
  [Bit Flip Permission]
8b/512B  : Represent that it allow 8 bit errors in 512 bytes.

admin

回复 9# Artema


   ^^^^^Is it true?

1-read & verify-ok, save dumpfile1.bin
2-read & verify-ok, save dumpfile2.bin
3-read & verify-ok, save dumpfile3.bin

I feel :  
exactly the opposite , the file that TNM5000 read is wrong .
if T56 read wrong. It is impossible to pass the auto verification
for T56.

admin

回复 11# Artema

  hese 2 badblocks on all my chips 90 and 91,

this is normall.

you can verify it:

1. Erase the chip.
2. Read Block 90 and 91 .  if datas is 0x00 , this bLock is bad.
(if normal . it  is all 0xFF after erased)