ST M29W320DT

By: PhilipB - 2008-02-19 19:51:17

Is there anyway to read and write to the ST M29W320DT Flash ROM with the latest version of software ?

I have a programmer with a TSOP Adapter.

Re: ST M29W320DT

By: EZo - 2008-02-19 20:16:38

Yes , depending from adapter, programmer  HW and according SW.
Having 8/16bit flash adapter , generic willem programmer, SW 0.97ja select 3.3V 29LV320. Having 16 bit flash adapter select 3.3V 16bit 29F320. Chip has 3.3V voltage, apply voltage reduction in adapter or programmer. Latest programmers (like sivava 4.5C) allow use sw 0.98d5 - here programming process is faster.

Re: ST M29W320DT

By: PhilipB - 2008-02-20 09:27:27

Thank you for taking the time to reply to be Ezo, I have now managed to read one of these devices by following your instuctions; However and can not write back to a blank rom, it keeps erroring on the first location it attempts to write to. Any ideas what I might be doing wrong ?

Re: ST M29W320DT

By: EZo - 2008-02-20 10:17:19

Chip should be erased before write.
Be sure have a valid ID reply.

Re: ST M29W320DT

By: PhilipB - 2008-02-20 11:46:03

Hi Ezo,

Thank you for replying once again to my post. How do you erase the chip using the software ? Do you just fill the buffer with FF and write to the flash or is the erasing done another way ?

Re: ST M29W320DT

By: EZo - 2008-02-20 13:41:39

Action > Erase or Erase shortcut

Re: ST M29W320DT

By: PhilipB - 2008-02-21 11:19:07

Hi Ezo,

The origional ROM that I'm trying to copy has a valid ID when read, however the ROM I want to program returns a ID of FF for the manufacturer and FF for the device code. The ROM to be programmed has been purchased locally from Farnell Electronic Components and is the same make and type as the origional.

Am I doing something wrong ?

I have so far tried 3 different ROMs and all produce the same result. When I try to erase the ROMs the progress bar brefily appears and then disappears with a message of "erase completed by check DQ7" does this mean the device was sucessfully erased or Not ?

Even after displaying the above message the ROM can not be programmed.

Thank you for your help

Re: ST M29W320DT

By: PhilipB - 2008-02-21 18:22:27

I have managed to resolve the problems I were having by downloading software version 0.98D8 for the pro 4 from the main home page.