Basic info for the Atmega8515 AVR

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#1
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Dear all 

I am trying to read an AVR atmega8515 chip from one application and i have the following problem :

 

When i give the order to READ the chip the software send me back ERROR messages << Power ON - FAIL >> and << Cannot communicate with the target chip >> (check the attached picture - original Atmega)

 

I use the same programmer with one other same chip and the results was normal . (check the attached picture - empty Atmega)

 

My question is the following :

i take that error messages from the original chip because it is Locked .... or the Chip is damaged and i should replaced it .

 

Thank you

in advance .

 

regards

sv1plh

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Last Edited: Sun. Aug 18, 2019 - 09:03 PM
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Are both chips being plugged into the exact same socket to give the results you posted?

When in the dark remember-the future looks brighter than ever.   I look forward to being able to predict the future!

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Power ON - FAIL

Is the chip powered??

John Samperi

Ampertronics Pty. Ltd.

www.ampertronics.com.au

* Electronic Design * Custom Products * Contract Assembly

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The IC that you can't read is still most likely in good condition, however (it is likely) that the chip had its SPIEN fuse deactivated when it was previously written.

 

Try buying or building an AVR programmer that has the high-voltage serial programming feature included.  High voltage means +12V applied to the reset pin.  I believe that there are several examples listed in the Projects section of this website.

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Chips also need a clock source.  The ISP bit rate needs to be appropriate for that clock speed.

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I've never met a pig I didn't like, as long as you have some salt and pepper.

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Yes it is exactly the same !!!

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Yes it is !

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I dont use clock input ......

I will try with a crystal 

 

Thank you 

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First i will try with a crystal (same like the one in the application) and if i receive the same abnormal messages ,  i will check your proposal .

 

Thank you !!!

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Simonetta wrote:

The IC that you can't read is still most likely in good condition, however (it is likely) that the chip had its SPIEN fuse deactivated when it was previously written.

Uh, highly unlikely:

 

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Thank you 

Finally even the crystal don't make any difference , the chip can not powered ON from the programmer .

I will check the solution with the higher source (12V) programmer and i revert .

Thanks again for your time and the attached table 83

 

regards

SV1PLH

 

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sv1plh wrote:
the chip can not powered ON from the programmer .

???  Does your ISP programmer provide power to the target chip?  Many (most?) have a Vcc connection, but that is to SENSE the Vcc level, not provide supplyV to the target chip.

 

What voltage do you measure at the Vcc pin(s)?

 

sv1plh wrote:
I will check the solution with the higher source (12V) programmer

??? again.   Do you really have the facilities for a HV parallel programming setup?

You can put lipstick on a pig, but it is still a pig.

I've never met a pig I didn't like, as long as you have some salt and pepper.