Kinetis Microcontrollers中的主题 Re: What are prequalification chips?

What are prequalification chips?

anguel — Tue, 30 Apr 2013 11:37:44 GMT

Hi!

I wonder what prequalification chips actually mean. They start with PK instead of MK according to the datasheets but I do not find any explanation what this exactly means.

Thanks in advance,

Anguel

Re: What are prequalification chips?

Hui_Ma — Thu, 02 May 2013 02:17:07 GMT

Hi,

The PK is the prototype part number - not fully qualified to specification.

The MK is the production number of fully qualified part.

There without any feature difference between "PK" vs. "MK" chips.

Wish it helps.

Re: What are prequalification chips?

anguel — Thu, 02 May 2013 08:35:55 GMT

Thank you for the information but I still do not know what it means when my Kwikstik board has a PK40 chip instead of a MK40 chip. What does this mean? May the chip perform out of specs or what?

Re: What are prequalification chips?

Hui_Ma — Thu, 02 May 2013 09:37:35 GMT

It will take time to pass quality tests, the "PK" product always release early than "MK" product. Kwikstik board is using "PK" product to get the development tool release time same with the chip. For the "PK" product also pass the validation tests, which performance could not out of specs.

Wish it helps.

Re: What are prequalification chips?

anguel — Thu, 02 May 2013 09:41:26 GMT

But Kwikstik is not a new product, so why is it still using a PK chip?

Re: What are prequalification chips?

Hui_Ma — Fri, 03 May 2013 07:13:41 GMT

There is no feature and performance difference to use "PK" chip on KwikStik board. I think that's why KwikStik continue to use "PK" chip.

Re: What are prequalification chips?

anguel — Fri, 03 May 2013 08:49:54 GMT

Thanks!