What is ''non-optimized die'' ?

[Kuikui]

Posted on February 05, 2013 at 17:39

Hi all,

I'm looking for buying an 500 x STM32F050K4U6 for production.

I noticed that some parts have a ''A'' at the end of the part number ( STM32F050K4U6A ), so I looked at the datasheet, on the ''part numbering section'', and it is written :

A = non-optimized die

Blank = standard die

What's the difference ? Does this mean the ''A'' version is like ''prototypes'' ?

Thanks for help.

Best regards,

Vincent.

[waclawek.jan]

Posted on February 06, 2013 at 18:16

While it's up to ST to give a definitive answer, I'd say, yes, they are preliminary versions of the chip.

JW

[Kuikui]

Posted on February 08, 2013 at 23:08

Thanks for your answer Waclawek.

The thing I ''don't understand'', is that A version is more expensive than non-A version.

Is it possible to get an answer from ST please ?

[Patrice HAMARD]

Posted on May 05, 2013 at 18:45

Hello,

Let me share a little marketing secret. ;)

When new products are introduced, we are generating a set of part numbers combining various pin counts, peripherals memory size. In our case, the reference STM32F050 in 16k or 32KB version was supported by a bigger device. in order to trace the introduction of an optimized die we have modifying t he sales type.

The suffix ''A'' was created for that purpose.

Nowadays,  the ''Non-A'' version is the optimized device. Consequently the ''A'' version is terminated.

Transferring an application from ''A'' to the latest  ''Non A''  should cause no problem. 

Best Regards