Request for info on a SPI ROM part

[pc1staid]

Hello guys and gals on this forum.
I may be posting in the wrong section, if so, would a Mod please put it in the relevent forum.

After information on a SPI Flash ROM for availability and/ or an alternative.
In situ at the moment is a Macronix MXIC MX25U8033E M21-12G SOP8 IC

I know this is a 1.8v chip. The Laptop ( Acer Aspire A314-31) has suffered liquid ingress where there was no power. I have solved the power side of things, so I now get power on/ battery showing as charging etc, but no display. I have a Chipmunk ( normally use this on Apple machines) which seems to work on PC based laptops as well, that shows me the CPU is doing nothing. Upon removal of the adapter whilst powered on does give a beep indicating its removal... so there is life there somewhere.

There was a little corrosion around the SPI ROM which I have cleaned but no further forward.
I have removed the SPI ROM and placed it on my programmer (CH341A) with the 1.8v adapter and it reads as a 4MB/32Mbit unit. The data sheets show this as a 8Mb/ 32Mbit unit and this is further confirmed by the BIOS file ( found at this link:- https://www.badcaps.net/forum/showthread.php?t=67716 )
I feel the SPI ROM is damaged and wish to get another..... even though I can find data sheets, I can not find a source. Aliexpress do not have any, well the ones they do have not got the code M21-12G, which I believe is the package type.
Can anyone tell me if there is an alternative SPI ROM I can use ( Winbond etc), or even better if someone has the said IC on a dead donor board, able to supply it.

Any help is greatfully received.
Thanks for you time folks

[ktmmotocross]

Re: Request for info on a SPI ROM part

just throw in any bios ic with same voltage and capacity. they are "all" the same

[piernov]

Re: Request for info on a SPI ROM part

They are not. Dual SPI/Quad SPI mode, different clock tolerance, different command sets… In a lot of cases it'll work, but better use the same one or at least pick on in the VSCC table to avoid issue with ME/TXE.

[ktmmotocross]

Re: Request for info on a SPI ROM part

They are not. Dual SPI/Quad SPI mode, different clock tolerance, different command sets… In a lot of cases it'll work, but better use the same one or at least pick on in the VSCC table to avoid issue with ME/TXE.

thats why i wrote "all"

[pc1staid]

Re: Request for info on a SPI ROM part

Thanks for the replies @KTMMOTOCROSS and @Piernov.

So, would this one do the job? .....
https://uk.rs-online.com/web/p/flash-memory/8696195/

[SMDFlea]

Re: Request for info on a SPI ROM part

Thanks for the replies @KTMMOTOCROSS and @Piernov.

So, would this one do the job? .....
https://uk.rs-online.com/web/p/flash-memory/8696195/

The MX25U8033E isn`t supported by the CH341A software that you`re currently using,thats why the chip size reads differently. Try NeoProgrammer software instead,its supports the MX25U8033E. You just have to change the language to english,choose CH341A as the hardware and select the chip manually. If you want your bios fixing post it in the "Bios Requests ONLY!" section .

NeoProgrammer - https://www.badcaps.net/forum/attach...7&d=1599328542

.

[pc1staid]

Re: Request for info on a SPI ROM part

The MX25U8033E isn`t supported by the CH341A software that you`re currently using,thats why the chip size reads differently. Try NeoProgrammer software instead,its supports the MX25U8033E. You just have to change the language to english,choose CH341A as the hardware and select the chip manually. If you want your bios fixing post it in the "Bios Requests ONLY!" section .

NeoProgrammer - https://www.badcaps.net/forum/attach...7&d=1599328542

.

I will give that a go. i am going to try the new software first. If that fails I will be back on the hunt for a SPI ROM
Thanks for the advice SMDFlea.