KL27 Availability

[mjbcswitzerland]

Hi NXP

Please could you give details about KL27 availability?

According to NXP and distributor inventory there are none available any more and next stock is not expected until 2022.

Is this accurate and do we need to redesign two new products which should be using KL27Z256VFMs and starting production in the very near future?

Thanks, with urgency

Regards

Mark

[bobpaddock]

The K32LA2 can be used in its place in many cases.
Note that the errata says I2C is broken unless DMA is used.
I'm just starting to deal with that now.
Wish people would stop trying to "improve" simple protocols like I2C that only screws them up.

Also due to the restructuring of the clock tree it is hard to get the K32L to be as low power as the KL27.
Unless use an 32,768 Hz MEMs or Crystal it is impossible to get CPU clock to be stable.
So far this has only been an EMI and 'busy loop' delay issue as the peripherals can use other crystal frequencies.

Also the new K32L form here is devoid of any participation by NXP, so
might as well ask K32L questions here. There are key items missing
from the K32L Reference Manual such as what is the clock for the
TSTMR? Leaving me to guess it is SIR/8 and no info on what happens to
it if you turn SIR off to save power.

[mjbcswitzerland]

HI Bob

In this case I couldn't move to a K32L2A since they are not (yet) available in small housings.

However I probably would have done if it had been possible since they are well priced and will probably have 5 years on the KL2x parts with respect to longevity.

Regards

Mark

[myke_predko]

Hey @mjbcswitzerland 

What are you looking for exactly and in what quantity?  I just looked at Digi-Key & Mouser and they have fair quantities in stock but they are projecting "52 week lead times" which is troubling...

But the "52 week lead time" seems to be listed on many Kinetis parts (LPC seems to be 26 weeks) but I do see 20 weeks as well as other values.  

Good question to ask.  

[mjbcswitzerland]

Myke

Digi-Key shows zero stock and next delivery June 2022.
https://www.digikey.ch/product-detail/de/nxp-usa-inc/MKL27Z256VFM4/MKL27Z256VFM4-ND/4988919

Mouser shows zero stock and 1900 expected May 2022:
https://eu.mouser.com/ProductDetail/NXP-Semiconductors/MKL27Z256VFM4/?qs=dTl%2FGK1lAHKlKRnFhoLwTw%3D...

There are some at Rochester but only 4k and once these go the question is whether everyone still has to wait until mid. 2022 to be able to continue?

Regards

Mark

[myke_predko]

Hey Mark,

I've reached out to my NXP contacts for the MKL27s as well as the MK22s that I need.  

I'll let you know how I make out.

myke

[mjbcswitzerland]

Hi Myke

Thanks - we'll see what answer comes back.

In the meantime I will try to buy up the parts that I can find but in addition I have adjusted the circuit so that it can accept a KL25 or KL26 (these are footprint compatible) and the port functions I need are the same on both. Since the KL25/KL26 have neither ROM LOADER not crystal-less operation I have added a programming header and an optional 8MHz crystal for the case that they need to be used instead.

Since the product firmware uses the uTasker framework there is no SW problem as it runs on all parts (although I do need to build a different object for each).

This should secure the products from potential KL27 supply chain issues as the KL25 and KL26 (in same housing) are stocked well all over the place.

Regards

Mark

[kerryzhou]

Hi mjbcswitzerland,

    You mean MKL27Z256VFM4, right?

    This chip longevity is still available:

And the www.nxp.com side also active:

But to the detail stock information, you still need to check with the distributor, you can more distributor on your side:

https://www.nxp.com/support/sample-and-buy/distributor-network:DISTRIBUTORS

The community is mainly for the technical questions.

Thanks a lot for your understanding.

Best Regards,

Kerry

[mjbcswitzerland]

Hi

I went through the distributor list and can confirm that the next delivery for the part I need:KL27Z256VFM4 is June 2022.

Longevity and availability are not exactly the same and I think that this can be considered a technical issue since virtual chips are not that useful for product delivery. In any case it was necessary to react by redesigning quickly to avoid disappointment.

Regards

Mark

[myke_predko]

Hey @mjbcswitzerland 

I just got a reply from my contact:

I know this sounds crazy but the semiconductor industry in the worst supply situation it has been since I can remember. 

Lots of factors, COVID, foundry capacity, test capacity, component shortages, significant increase in demand due to work from home.

So the leadtimes on our website are real. If you can find any product out there, I would suggest you buy it now, 

Sorry but this is not going to get better for at least 2021.

So, not a great time to be looking forwards to getting semiconductors.  

myke

[mjbcswitzerland]

Thanks Myke

I am working on a variety of Kinetis and iMX RT 10xx based product developments and have been monitoring supply (which is a design input at least at the start of each new design) and had noticed what looks like a bit of a crash in stock.

My local manufacturer hasn't noticed a problem to date so it may be a glitch by specific parts or it may be that the effect has not yet filtered through.

We'll see....

Regards

Mark

[mjbcswitzerland]

Myke

Strange is that 1'500 just popped up at Mouser for immediate delivery, but they give 79 weeks for subsequent batches.
A bit of mixed messaging in this case....

Regards

Mark

[myke_predko]

@mjbcswitzerland 

I think you're seeing 1,500 that were under allocation becoming available.  You're just noticing it because the supply chain is so tight and you're watching.  

Hopefully some new capacity will come on line and the need for GPUs and memory will drop so that fabs can look at other chip types.  

It will be another challenging year.  

Good luck to all of us.  

myke