What's the difference between MK40DX256ZVLQ10 and MK40DX256VLQ10?

Ellery — Mon, 30 Apr 2018 18:17:08 GMT

No distributor stock on component we're using: MK40DX256ZVLQ10.

Some stock available on MK40DX256VLQ10.

What's the difference?

Re: What's the difference between MK40DX256ZVLQ10 and MK40DX256VLQ10?

mjbcswitzerland — Mon, 30 Apr 2018 21:01:23 GMT

Hi Ellery

Parts with Z in their name are revision 1 silicon. Without Z they are revision 2. There are a few differences between the two but usually nothing that will cause a big problem. You can test the new parts and if there is something that doesn't work you can check the difference and make the necessary code change.

Revision 1 parts will also have more errata so check these - especially, you might need to disable flash pre-fetching and cache aliasing. To be able to use both rev. 1 and rev. 2 parts in a design with a single firmware you may need to build for the rev. 1 and identify the part to make a couple of code choices (this is not always the case - it depends on which modules are actually used).

It seems that Z parts are cropping up in the supply chain due to the fact that there are shortages of many parts (possibly there are old stocks that were destined to be trashed - you may find they date from 2011 or 2012 since rev. 2 replaced rev. 1 about then).

Mark

uTasker developer and supporter (+5'000 hours experience on +60 Kinetis derivatives in +80 product developments)
Kinetis: http://www.utasker.com/kinetis.html

topic Re: What's the difference between MK40DX256ZVLQ10 and MK40DX256VLQ10? in Kinetis Microcontrollers

What's the difference between MK40DX256ZVLQ10 and MK40DX256VLQ10?

Re: What's the difference between MK40DX256ZVLQ10 and MK40DX256VLQ10?