Flashrom report

[Dennis]

Hi

Please see the report below.  I've tried flashing 2 eproms but get the 
same result.

Any ideas?

Thanks

Dennis

Calibrating delay loop... OK.
Found Macronix flash chip "MX25U6435E/F" (8192 kB, SPI) on ch341a_spi.
Reading old flash chip contents... done.
Erasing and writing flash chip... Erase/write done.
Verifying flash... FAILED at 0x00000010! Expected=0x5a, Found=0x5b, 
failed byte count from 0x00000000-0x007fffff: 0x332be2
Your flash chip is in an unknown state.
Please report this on IRC at chat.freenode.net (channel #flashrom) or
mail [e-mail], thanks!

[Mike Banon]

On Wed, Jan 22, 2020 at 2:07 PM Dennis  wrote:
> Hi. Please see the report below.  I've tried flashing 2 eproms but get the
> same result. Any ideas? Thanks, Dennis
>
> Calibrating delay loop... OK.
> Found Macronix flash chip "MX25U6435E/F" (8192 kB, SPI) on ch341a_spi.
> Reading old flash chip contents... done.
> Erasing and writing flash chip... Erase/write done.
> Verifying flash... FAILED at 0x00000010! Expected=0x5a, Found=0x5b,
> failed byte count from 0x00000000-0x007fffff: 0x332be2
> Your flash chip is in an unknown state.
> Please report this on IRC at chat.freenode.net (channel #flashrom) or
> mail [e-mail], thanks!

Please describe your flashing setup. Are you trying the ISP (in-system
programming) using a SOIC clip? Maybe the wires between ch341a and
this test clip are too long or poor quality (have a high resistance,
i.e. aluminium has 1.5x higher resistance than copper)

[Nico Huber]

Hi Dennis,

On 19.01.20 19:21, Dennis wrote:
> Found Macronix flash chip "MX25U6435E/F" (8192 kB, SPI) on ch341a_spi.

only realized this now, that Mike mentioned the programmer voltage:
This is a 1.8V part. The CH341A is 5V or 3.3V. So make sure to use a
proper adapter.

Nico

PS. Please keep the mailing list addressed when replying.

[Dennis Dale-Green]

Hi Nico

Thanks for the voltage warning.  I wasn't aware it was a 1.8v device. I
thought it was 3.3v.  I guess I'll have to search for another programmer
and chip!

Dennis

On Thu, 23 Jan 2020 at 09:22, Nico Huber  wrote:
> Hi Dennis,
>
> On 19.01.20 19:21, Dennis wrote:
> > Found Macronix flash chip "MX25U6435E/F" (8192 kB, SPI) on ch341a_spi.
>
> only realized this now, that Mike mentioned the programmer voltage:
> This is a 1.8V part. The CH341A is 5V or 3.3V. So make sure to use a
> proper adapter.
>
> Nico
>
> PS. Please keep the mailing list addressed when replying.

[Nico Huber]

> Thanks for the voltage warning.  I wasn't aware it was a 1.8v device. I
> thought it was 3.3v.  I guess I'll have to search for another programmer
> and chip!

CH341A might still be the cheapest option. They are sometimes sold with
a 1.8V adapter. Just search for the combination... maybe you can also
find that adapter w/o an additional CH341A.

The chips might still work, they usually are rather sturdy.

Nico

[Dennis Dale-Green]

Does the 1.8v adapter board drop into the usb boards chip holder?

On Thu, 23 Jan 2020 at 09:48, Nico Huber  wrote:
> > Thanks for the voltage warning.  I wasn't aware it was a 1.8v device. I
> > thought it was 3.3v.  I guess I'll have to search for another programmer
> > and chip!
>
> CH341A might still be the cheapest option. They are sometimes sold with
> a 1.8V adapter. Just search for the combination... maybe you can also
> find that adapter w/o an additional CH341A.
>
> The chips might still work, they usually are rather sturdy.
>
> Nico

[Mike Banon]

On Thu, Jan 23, 2020 at 3:46 PM Dennis Dale-Green
 wrote:
> Does the 1.8v adapter board drop into the usb boards chip holder?

Depends on what adapter you're talking about. Those I've seen on
AliExpress and sometimes are being sold together with CH341A as a
bundle, seem to be compatible, but as I've never encountered any 1.8v
parts I didn't have a chance to try yet. Don't throw away a chip yet,
maybe it's still alive.

[Dennis Dale-Green]

Thanks,

I've ordered a bundle with the adapter, will take a few days to arrive.

I've kept the chip and will report back when done.

Regards

Dennis

On Thu, 23 Jan 2020 at 17:04, Mike Banon  wrote:
> On Thu, Jan 23, 2020 at 3:46 PM Dennis Dale-Green
>  wrote:
> > Does the 1.8v adapter board drop into the usb boards chip holder?
>
> Depends on what adapter you're talking about. Those I've seen on
> AliExpress and sometimes are being sold together with CH341A as a
> bundle, seem to be compatible, but as I've never encountered any 1.8v
> parts I didn't have a chance to try yet. Don't throw away a chip yet,
> maybe it's still alive.

[Dennis Dale-Green]

New ch341a programmer and adapter arrived and now can program and verify.

Thanks

On Thu, 23 Jan 2020 at 17:13, Dennis Dale-Green 
wrote:
> Thanks,
>
> I've ordered a bundle with the adapter, will take a few days to arrive.
>
> I've kept the chip and will report back when done.
>
> Regards
>
> Dennis
>
> On Thu, 23 Jan 2020 at 17:04, Mike Banon  wrote:
> > On Thu, Jan 23, 2020 at 3:46 PM Dennis Dale-Green
> >  wrote:
> > > Does the 1.8v adapter board drop into the usb boards chip holder?
> >
> > Depends on what adapter you're talking about. Those I've seen on
> > AliExpress and sometimes are being sold together with CH341A as a
> > bundle, seem to be compatible, but as I've never encountered any 1.8v
> > parts I didn't have a chance to try yet. Don't throw away a chip yet,
> > maybe it's still alive.