AT25DF641 (Atmel) in USBJTAGNT (2)

[lamp]

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Thread closed? viewtopic.php?t=8190

Please, see images:









No detect...

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[CAPONE]

You need to provide external power. I don't think it will work trying to draw power fron NT Pins. If you MOD tool you can draw 5 volt from power imput into the NT and USBBDM posted a 3.3 volt tap location as well.

[lamp]

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You need to provide external power.

Thanks, Mr. CAPONE.

I try with external power (3.3 volts)
and don't work. No detect.

Mr. CAPONE checked in the pictures above
if the connections are correct?

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[CAPONE]

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Thanks, Mr. CAPONE.

I try with external power (3.3 volts)
and don't work. No detect.

Mr. CAPONE checked in the pictures above
if the connections are correct?

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You can try 5 volts. Never go higher than 5 volts and you need to connect both the pos and neg wires from external power source.

[lamp]

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You can try 5 volts.

In the datasheet the Vcc is 2.7 to 3.6 Volts.
With 5 volts the flash will is damaged - or not?

The connections are correct?

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[CAPONE]

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In the datasheet the Vcc is 2.7 to 3.6 Volts.
With 5 volts the flash will is damaged - or not?

The connections are correct?

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So far in all my testing Flash has never suffered any damage from using 5 Volts. But never go over that. I have found soem flash that don't respond well with 3.3 and then I try 5 volts. Always try lowest voltage first. 5 volt tap from USB is only .500ma.

[usbbdm]

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In the datasheet the Vcc is 2.7 to 3.6 Volts.
With 5 volts the flash will is damaged - or not?

The connections are correct?

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Check for some pins for WP and hold. I think they need to hold proper level. If I am not mistaken they should pull high.

[lamp]

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Check for some pins for WP and hold.

Thanks, Mr. BDM.

See a summary of the datasheet:




So I will put the pin 9 to ground, or with 3.3 Volts?

The connections (images above, first post) are right?

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[usbbdm]

WP means if you pull done it will do "write protect"　If you want to program then you should pull high.

[lamp]

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If you want to program then you should pull high.

OK. In pin 9 (WP) to 3.3 Volts. So be able to detect the flash. I'll try.

The connections (images above, first post) are right?

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[usbbdm]

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OK. In pin 9 (WP) to 3.3 Volts. So be able to detect the flash. I'll try.

The connections (images above, first post) are right?

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Do not forget the hold pin.

[lamp]

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Do not forget the hold pin.

Thanks for not letting me forget!

Pin 1 (hold) and pin 9 (wp) to 3.3 Volts. OK?

The connections (images above, first post) are correct?

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[usbbdm]

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Thanks for not letting me forget!

Pin 1 (hold) and pin 9 (wp) to 3.3 Volts. OK?

The connections (images above, first post) are correct?

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Yes. That is why you need to get the datasheet.

[lamp]

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No work...

No detect...

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[usbbdm]

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No work...

No detect...

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Take another picture of your configuration and put your result in here (copy/paste the output window).