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p2020 nor flash s29gl256p erase failed, blank check failed

Question asked by Li Tian on Sep 29, 2014
Latest reply on Sep 30, 2014 by Yiping Wang

we designed a board with P2020 processor!

the nor flash is s29GL256p, we cann't flash into it a bin file ,we can even not erase the chip:

we use codewarrior 10.3. in the flash programmer,we select  erase whole device. it completed with errors!

the print is as follows:

fl::target -lc "LC for Simple Flash"

fl::target -b 0x2000 0x30000

fl::target -v off -l off

cmdwin::fl::device -d "S29GL256P" -o "16Mx16x1" -a 0xfe000000 0xffffffff

cmdwin::fl::erase all

Beginning Operation ...   


Performing target initialization ...   

Downloading Flash Device Driver ...  

Reading flash ID ...

Erasing entire flash ...   

Erasing ...

Erase Command Succeeded   

cmdwin::fl::blankcheck all


Downloading Flash Utility Driver ...  

Performing Blank Check from 0xFE000000 to 0xFFFFFFFF ...   

Blank Checking ...

Error:  Blank Check failed.

Error: Blank Check failed.


by the way we use CPLD to latch the multiplexd LAD0~~LAD15 address to Nor.