Larger memory

VK3KYY
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Re: Larger memory

Post by VK3KYY » Mon Nov 22, 2021 6:01 am

KI5GZK wrote:
Mon Nov 22, 2021 5:54 am
Actually it is a Winbond device. It's a 25Q128FVSG chip.
Electically its not reporting its a winbond chip.

see the official winbond data sheet, linked from Digikey ( https://www.winbond.com/resource-files/ ... %20kms.pdf )

page 24 , section 8.1.1


the original chip code of is a Winbond code, because it starts with 40

4018 is the code that all normal GD77 radios chips report.

KI5GZK
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Re: Larger memory

Post by KI5GZK » Mon Nov 22, 2021 6:03 am

My chip clip identifies it as a W25Q128JV-xM device.

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Re: Larger memory

Post by VK3KYY » Mon Nov 22, 2021 6:03 am

I guess we could try adding your code as a valid chip, but it still may not work.

Both the firmware and cps would need to be changed

But if that chip does not respond to the Winbond command codes, then it will not be supportable

KI5GZK
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Re: Larger memory

Post by KI5GZK » Mon Nov 22, 2021 6:07 am

Well, the CPS is actually able to restore the backup okay, but some of the other functions don't work.

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Re: Larger memory

Post by VK3KYY » Mon Nov 22, 2021 6:09 am

KI5GZK wrote:
Mon Nov 22, 2021 6:07 am
Well, the CPS is actually able to restore the backup okay, but some of the other functions don't work.
the firmware checks to see if the chip is known device, and won't work if its not on a supported list.

normally this is not an issue, because people have never fitted a non-Winbond chip into their radio.

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F1RMB
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Re: Larger memory

Post by F1RMB » Mon Nov 22, 2021 6:11 am

According to the ID, here is the datasheet

https://www.winbond.com/resource-files/ ... 20Plus.pdf
73 de Daniel.

KI5GZK
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Re: Larger memory

Post by KI5GZK » Mon Nov 22, 2021 6:20 am

I found the datasheet for a W25Q128JV-DTR that shows an ID of 7018h.

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Re: Larger memory

Post by VK3KYY » Mon Nov 22, 2021 6:24 am

KI5GZK wrote:
Mon Nov 22, 2021 6:20 am
I found the datasheet for a W25Q128JV-DTR that shows an ID of 7018h.
Link ??

edit

https://www.winbond.com/resource-files/ ... 20plus.pdf

KI5GZK
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Re: Larger memory

Post by KI5GZK » Mon Nov 22, 2021 6:27 am


VK3KYY
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Re: Larger memory

Post by VK3KYY » Mon Nov 22, 2021 6:27 am

Looks like its from a different series of Winbond chips.

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