2015-04-08 04:07 AM
Hi all,
I�m designing a STM32F107VCT based embedded system. Unfortunately I�ve several problems with this part. For example the part wasn�t program correctly (Verification failed), and when I removed and soldered another chip, the problem solved. Since the Mouser and Digikey prices are about 2 times more expensive than I�ve bought, In your opinion is it possible my chips are fake or Counterfeit parts?
Thanks in advanced,
Reza #programming-verfication-fail2015-04-08 04:27 AM
In your opinion is it possible my chips are fake or Counterfeit parts?
In theory, yes.For example the part wasn’t program correctly (Verification failed), and when I removed and soldered another chip, the problem solved.
I'd rather suspect inproper soldering, program/debug connection issues, or power supply issues. Perhaps in this order. Missing buffer caps, unstable supply voltage and too long SWD/JTAG wires could cause similiar problems.
2015-04-08 09:54 AM
Thanks argentum.
2015-04-10 01:45 AM
Hello Reza,
Generally, the probability of counterfeited products cannot be totally discarded unless you are getting your parts from a trusted supplier.So, we encourage you/your company to purchase ST products using authorized supply chains to substantially reduce the possibility of obtaining non-genuine ST products.There is a list of authorized sales representatives and distributors on ST website: http://www.st.com/stonline/contactus/contacts/index.php.You may contact your local distributor then if you are facing repeated issue with the received parts.Thanks again for choosing ST products.Best Regards,-Mayla-To give better visibility on the answered topics, please click on Accept as Solution on the reply which solved your issue or answered your question.
2015-04-20 04:11 AM
Thank you Mayla.