ATMEL parts are running out of stock due to wafer shortage ?

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Seem like atmel parts are running out of stock, is it true of worldwide wafer shortage ?

 

Last Edited: Wed. Jan 20, 2021 - 02:08 PM
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Looks like Digikey has lots of variety of AVRs in stock--did you try them?

When in the dark remember-the future looks brighter than ever.   I look forward to being able to predict the future!

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hamisu wrote:
Seem like atmel parts are running out of stock

What makes you say that?

 

Maybe you just need to be looking under 'M' for Microchip now ... ?

 

wink

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hamisu wrote:

Seem like atmel parts are running out of stock, is it true of worldwide wafer shortage ?

 

Lead-times on large quantities have extended from most manufacturers. There are now issues in car production for higher-end vehicles which use a lot of big chips. Hello 'allocation', I haven't seen you in a while.

 

I've been doing this long enough to remember at least 2, or was it 3, occasions when DRAM deliveries were being quoted as 18 months! Plus the early days of microcontroller, and the recent move to SMT across many product types. Anyone tried to buy quantities of the more interesting TH transistors recently? Or JFETs?

 

Things like this happens, it's all part of supply and demand.

#1 Hardware Problem? https://www.avrfreaks.net/forum/...

#2 Hardware Problem? Read AVR042.

#3 All grounds are not created equal

#4 Have you proved your chip is running at xxMHz?

#5 "If you think you need floating point to solve the problem then you don't understand the problem. If you really do need floating point then you have a problem you do not understand."

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I recall there was a BIG mess when Tantalum caps were not available anywhere, at any price (maybe around 1995)

 

Then there was a bigger mess when they exploded on the PCB  crying

When in the dark remember-the future looks brighter than ever.   I look forward to being able to predict the future!

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avrcandies wrote:

I recall there was a BIG mess when Tantalum caps were not available anywhere, at any price (maybe around 1995)

 

Oh yes, I'd forgotten that one.

#1 Hardware Problem? https://www.avrfreaks.net/forum/...

#2 Hardware Problem? Read AVR042.

#3 All grounds are not created equal

#4 Have you proved your chip is running at xxMHz?

#5 "If you think you need floating point to solve the problem then you don't understand the problem. If you really do need floating point then you have a problem you do not understand."

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hamisu wrote:
... is it true of worldwide wafer shortage ?
(reduce scope to Microchip US wafer fabs) there's an effort on classic AVR that's been moved forward :

Tempe Fab 2, Gresham Fab 4 | AVR Freaks

 

P.S.

Some AVR may be wafer fab'd elsewhere :

XMEGA Lead Time, Dec'20 | AVR Freaks

 

As of 17-Jan'21, lead-time issue includes some mega324PB which are wafer fab'd at Microchip US.

https://www.microchip.com/product-change-notifications/#/10588/GBNG-06LXXH156

Product Change Notification | Microchip Technology

How to search for Microchip PCNs

 

"Dare to be naïve." - Buckminster Fuller

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Brian Fairchild wrote:
... it's all part of supply and demand.
... and force majeure.

How Japanese Chipmaker Renesas Recovered From the Earthquake - IEEE Spectrum

IIRC, Microchip Thailand was affected by flooding in the previous decade.

 

"Dare to be naïve." - Buckminster Fuller

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and MLCC lead-time

 

"Dare to be naïve." - Buckminster Fuller

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Beach sand is in short supply due to rising sea levels due to climate change!  devil

 

FF = PI > S.E.T

 

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gchapman wrote:

and MLCC lead-time

 

And fire...

 

https://www.strata-gee.com/akm-f...

 

There is now a shortage of high-quality audio ADC and DAC chips affecting some manufacturers.

#1 Hardware Problem? https://www.avrfreaks.net/forum/...

#2 Hardware Problem? Read AVR042.

#3 All grounds are not created equal

#4 Have you proved your chip is running at xxMHz?

#5 "If you think you need floating point to solve the problem then you don't understand the problem. If you really do need floating point then you have a problem you do not understand."

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The thread title is interesting "due to wafer shortage". Is the suggestion here that it's silicon itself that is in short supply (which is kind of odd as it's one of the most abundant elements on Earth!)? While there may be all kind of logistical issues to do with the manufacture of packaged chips I wonder if the critical path really is the wafers?

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My reading of the issues around car manufacturing is that  last year, as car sales slowed down, they cancelled some of their forward orders on the chip manufacturers. At the same time, with more people staying at home, demand for 'entertainment' chips went up and chip makers were only too happy to switch their production lines. So car makers are now at the back of the queue.

 

Does this affect 8-bit micros? I'm not so sure but I do see that stock level are down across a range of suppliers and lead-times for further stocks have extended.

#1 Hardware Problem? https://www.avrfreaks.net/forum/...

#2 Hardware Problem? Read AVR042.

#3 All grounds are not created equal

#4 Have you proved your chip is running at xxMHz?

#5 "If you think you need floating point to solve the problem then you don't understand the problem. If you really do need floating point then you have a problem you do not understand."

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I imagine that they fabricate Wafers in a batch.   It is probably fiddly to change all the photo masks etc. between Wafer targets.

 

Perhaps the Wafers are packaged immediately.   Or perhaps they are stored as Wafers until they know how many dies are required for each package type.

 

gchapman will know the answer.

 

If demand for a particular chip in a particular package is high,   it requires Wafer Fabrication,  die testing,  die packaging,  product packaging,  shipping to Distributors, ...

 

It always surprises me that Semiconductor Manufacturers provide such a wide range of package options.

Surely single Temperature TQFP and QFN on Reels would make Manufacturer and Distributor lives easier.

 

David.

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My company has had issue ordering *other ic's or finding them in stock. For one product last year there was a 3-4 month lead on the microchip MIC2870 led driver, now one version of it has an 8 month lead time up to September 2021!.

Now on the same board our battery charging chip has a 4 month lead time. We were only able to secure 500 pieces to help get us through an order of 4K units.

*UPDATE*

Oh $###, i just saw that the Attiny1614 (same board) has July - October lead times as well!

~William

Last Edited: Wed. Jan 20, 2021 - 06:17 PM
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IIRC wrt AVR, wafers are "mostly" fab'd in US with assembly and test in Thailand and Philippines; third parties also assemble and test.

Uncertain where the wafers are cut into die.

Before first wafer fab for customers there's wafer fab qualification; likewise for the package.

david.prentice wrote:
It always surprises me that Semiconductor Manufacturers provide such a wide range of package options.
Some more so than others; one of the beauties of PIC is that package range.

Am uncertain there'll be any new PDIP-40 AVR.

david.prentice wrote:
Surely single Temperature TQFP and QFN on Reels would make Manufacturer and Distributor lives easier.
and complicate PCBA manufacturers (reel, tray, bag); prototype and very low-rate PCBA manufacturing is begun by the operator emptying a bag of parts onto the PnP's table (distributors can create a parts bag)

Some customers require a 105C plastic package for extended industrial (steam clean)

Automotive ranges to 125C with a some at 150C (AVR are relatively sparse at 150C); automotive cab is spec'd at 100C (IIRC)

QFN isn't preferred for automotive though wettable flank QFN may be acceptable with underfill as a possible requirement.

An avionics requirement is -55C (stratosphere)

 


GBNG-06LXXH156 | Product Change Notification | Microchip

 

Underfill revisited: How a decades-old technique enables smaller, more durable PCBs - Embedded.com

ATmegaS128 - Tolerant Devices

 

"Dare to be naïve." - Buckminster Fuller

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"Dare to be naïve." - Buckminster Fuller

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Now what i wrote does not make sense, what chip was i looking at 10 minutes ago...

Woops, my brain read the last line: "Additional quantities can ship by 15-Sep-2021"

~William

Last Edited: Wed. Jan 20, 2021 - 06:40 PM
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clawson wrote:
While there may be all kind of logistical issues to do with the manufacture of packaged chips I wonder if the critical path really is the wafers?

A Massive Chip Shortage Is Hitting the Entire Semiconductor Industry - ExtremeTech

by  on December 21, 2020 at 11:15 am

[end of first paragraph]

... but there’s a new argument for what’s causing such general problems across so many markets: Insufficient investment in 200mm wafers.

 

[pie chart]

...  and a lot of vendors you’ve never heard of run mature, well-understood designs through smaller, older foundry lines for minimal costs.

...

Customers like building on 200mm fab lines because the manufacturing technologies are extremely mature and the costs are low. Many customers don’t get much benefit from moving to lower geometries, and they want to stick with the designs they’ve already paid for. 

...

[last sentence]

Another 220,000 wpm (wafers per month) worth of 200mm capacity is expected to come online in 2021, with total capacity of 6.4M wpm across the planet.

200mm wafers are popular for AVR.

 

"Dare to be naïve." - Buckminster Fuller

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Brian Fairchild wrote:

And fire...

https://www.strata-gee.com/akm-f...

There is now a shortage of high-quality audio ADC and DAC chips affecting some manufacturers.

yes, and it reveals that many TCXO's all use the same AKM chip too..., so now there is a serious TCXO shortage.

 

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 now one version of it has an 8 month lead time up to September 2021!.

Don't worry, an 8 month lead time is often greatly reduced once those parts show up next week.   In a few days the leadtime can drop from 6 months to 10 days...quite a time machine they made.

When in the dark remember-the future looks brighter than ever.   I look forward to being able to predict the future!

Last Edited: Thu. Jan 21, 2021 - 05:26 AM
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125USD for a 200mm wafer (in quantity)

Wafer Product Search | Wafer World (Florida)

 

Everything You Need to Know About Pricing Semiconductors  - (Wafer World)

 

"Dare to be naïve." - Buckminster Fuller

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avrcandies wrote:

Don't worry, an 8 month lead time is often greatly reduced once those parts show up next week.   In a few days the leadtime can drop from 6 months to 10 days...quite a time machine they made.

 

Makes production planning a nightmare though. At what point do you buy the rest of the components? Too early and you tie up cash for months on end, too late and the chances are something else goes onto allocation.

#1 Hardware Problem? https://www.avrfreaks.net/forum/...

#2 Hardware Problem? Read AVR042.

#3 All grounds are not created equal

#4 Have you proved your chip is running at xxMHz?

#5 "If you think you need floating point to solve the problem then you don't understand the problem. If you really do need floating point then you have a problem you do not understand."

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PSP is Preferred Supply Program. 

PSP Letter

...

February 4, 2021

 

[end of third paragraph]

We are estimating that these shortages will continue for much of 2021 and possibly into 2022.

 

[fourth paragraph]

Given the severely constrained environment, we have taken two actions: 1) We and our supply chain partners are adding capacity as fast as possible, but are facing equipment, materials and people shortages and delays; 2) We extended the cancellation and reschedule window to longer than normal to confirm that there is high confidence in the backlog placed on us.

...

 

[PSP]

 

[next to last paragraph]

We ask all of our customers to immediately place their 12-month non-cancellable non-reschedulable backlog on Microchip. We also ask our worldwide distributors to do the same.

...

 

edit : misnomer

 

"Dare to be naïve." - Buckminster Fuller

Last Edited: Fri. Feb 5, 2021 - 01:45 AM
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I read today that both GM and Ford have shut down auto production due to shortage of chips.

 

FF = PI > S.E.T

 

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How will 'chipageddon' affect you? - BBC News

by Leo Kelion
Technology desk editor

Feb 4, 2021

[mid-page, picture's caption]

General Motors plans to halt production at three North American plants and reduce work at a fourth, in South Korea

via Will the chip shortage impact you? @ AskWoody

 

"Dare to be naïve." - Buckminster Fuller

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When Is the Chip Supply Coming Back? – EEJournal

by Jim Turley

February 10, 2021

Supply Shortages in Semiconductors Hurt Automakers and Others

[mid-page]

Moreover, the distributors and assemblers weren’t inclined to reward the customers who’d stiffed them so abruptly. [automobile manufacturers]

...

ECM/EMS firms survive on just 1% or 2% margins, says [Dev] Rai. [Vice President of Global Sourcing at Sourcengine, a components clearinghouse.]

...

Sourcengine’s Rai says the shortages will persist for at least another six months, and that it will get worse before it gets better. 

...

[last paragraph]

...

Rai singles out Micron, Microchip, and Xilinx as the big winners.

...

 

"Dare to be naïve." - Buckminster Fuller

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Two weeks ago I ordered and got 2 RPi Pico boards, checked today and they are out of stock everywhere.

 

Guess I was was lucky!

Happy Trails,

Mike

JaxCoder.com => PartsBin - An Electronics Component Organizer

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clawson wrote:
While there may be all kind of logistical issues to do with the manufacture of packaged chips I wonder if the critical path really is the wafers?
Several issues

Materials shortage latest setback for global components industry | Sourcengine

by Mario McKellop

January 20, 2021

[mid-page for 8-in wafers]

...

In Q3 2019, industry analysts began seeing signs of a deficit in 8-inch (200mm) silicon wafers. 

...

[

  • 5G, EV
  • 8-in wafer fabs are "old" tech
  • USA and PRC tariff war

]

...

For 2021, OEMs should anticipate the wafer crunch to raise analog IC prices by 20 percent.

 

"Dare to be naïve." - Buckminster Fuller

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This starting to hurt in less obvious ways. My hobbyist group (3500 members worldwide, not automotive) consumes several thousand CAN chips (controllers and transceivers) a year. Although the immediate shortage is for QFN parts (which we don't use), it will hit us soon as DIP and SOIC parts go out of stock, with uncertain lead times for replenishment. We have managed to buy some into stock and made commitments for future requirements.

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In December I finally got leadtimes for Microchip parts hedged with bonded inventory at my assembly shop. I thought I was in the clear, but now I'm dealing with the AKM fire fallout. 18+ week leadtimes for 3 parts. I spent all last week tweaking PCB artwork to accommodate alternative parts. It's challenging to pick alternates when distributor inventory is shrinking by the hour!

 

Boy am I thankful God blessed us with whiskey!

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as of yesterday, industrial mega324PB are long lead; automotive mega324PB are typical lead time.

"Dare to be naïve." - Buckminster Fuller

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"Dare to be naïve." - Buckminster Fuller

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Anybody seeing a light at the end of this tunnel yet? Lead times are getting further and further away, wondering if this will be better or worse by 2022. 

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ki0bk wrote:
Beach sand is in short supply due to rising sea levels due to climate change!

Not at my house, we sweep enough out each day to fill a sand bucket.

Happy Trails,

Mike

JaxCoder.com => PartsBin - An Electronics Component Organizer

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Mason aa wrote:
Anybody seeing a light at the end of this tunnel yet?
Yes .... through binocularscheeky

Mason aa wrote:
Lead times are getting further and further away,
A generalization as there's some lead-time improvement especially for some automotive MCU.

Mason aa wrote:
... wondering if this will be better or worse by 2022.
Generally, worse this northern summer then slowly better.

Don't know when Gresham will be qualified.

Don't know the current status of 200 mm wafer production.

 


ATMEGA16U4-AUR/alternate choices? | AVR Freaks

 

Tempe Fab 2, Gresham Fab 4 | AVR Freaks

 

edit :

TI to Buy Micron's 3D XPoint Memory Chip Fab for $900 Million | Electronic Design

by James Morra

Jul 7th, 2021

Texas Instruments plans to convert the fab from the production of flash memory chips to analog and embedded products on the 65-nm and 45-nm nodes, with the ability to take the fab to different nodes as required.

[1/4 page]

According to industry watchers and executives, the supply gap is expected to last into 2022 or even 2023. 

"Dare to be naïve." - Buckminster Fuller

Last Edited: Tue. Jul 13, 2021 - 01:12 AM
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Quote:
125USD for a 200mm wafer (in quantity)
plus the mark-up for wafer fab

For some lagging-edge nodes, industry analysts see wafer prices rising 20 percent over the same period last year. [28 nm wafer price] Quotes for 8-inch wafers run as high as $600 each, a price that is expected to remain into 2022.

more in that article

Chip Shortages May Persist Until 2023, Analysts Say | EE Times

by   07.15.2021

...

... governments tend to be heedless of the profit-maximization mantra that has driven the semiconductor industry in recent years.

...

There’s also the tendency for politics rather than market dynamics to drive decisions on capacity expansion. That’s what causes the gluts, [Dan] Hutcheson [CEO, VLSI Research] said, noting a string of boom-bust cycles going back decades.

...

... and the automotivemarket will, for the first time, use leading-edge silicon, according to [Brett] Simpson [senior analyst, Arete Research]. In the short term, companies using older technology to make chips on 8-inch wafers for customers such as auto makers will be hard pressed to meet demand.

“For the lagging edge, there is clearly a lack of equipment — and it’s super expensive to add capacity here — to solve this capacity shortage,” Simpson said. “This gets largely resolved as migrations from 8-inch to 12-inch get finalized.”

...

For some lagging-edge nodes, industry analysts see wafer prices rising 20 percent over the same period last year. For example, at 28 nm, many foundry customers are paying $2,500 or more per wafer. Quotes for 8-inch wafers run as high as $600 each, a price that is expected to remain into 2022.

...

Expanding the supply on 8-inch wafers will likely be more difficult because of production tool sourcing difficulties, according to [Matt] Bryson [Senior VP, Wedbush Securities].

...

due to Editor's Notes | The Embedded Muse 427

 

"Dare to be naïve." - Buckminster Fuller

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Thought this was very interesting, really shows the impact of global chip shortage...

 

https://www.bbc.com/news/busines...

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Interesting read.

 

According to Intel's boss the worst is yet to come, I don't know if I agree with that or not.  I guess the shortage will depend on how long the pandemic goes on and the severity.

 

Not long ago I built a new computer but got stymied me it came to graphics card, there just wasn't any available unless you wanted to buy from a scalper.

Yesterday I went to NewEgg and learned that the card I wanted was available but at a steep markup.  So I'm wondering if more cards are being manufactured or is Crypto mining gone out of favor.

 

And who came up with 'chipageddon'?

Happy Trails,

Mike

JaxCoder.com => PartsBin - An Electronics Component Organizer

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mike32217 wrote:
According to Intel's boss the worst is yet to come, I don't know if I agree with that or not.
Tend to agree with him; effective executives are well experienced in risk analysis, reduction, and mitigation.

mike32217 wrote:
I guess the shortage will depend on how long the pandemic goes on and the severity.
Is that the case?

Reasons : Bloody October '08 (Lehman Brothers Holdings), currency machinations, stimuli, transport (shipping containers, ports, OTR trucking), executives are keen on cash (flexibility) and when cash tightens ...

Black Swans have sub-species.

mike32217 wrote:
So I'm wondering if more cards are being manufactured ...
Demand is likely more for on-die GPU via the northbridge.

mike32217 wrote:
... or is Crypto mining gone out of favor.
Am curious about the answer to your question.

 


Intel Newsroom: Executive Leadership

 

"Dare to be naïve." - Buckminster Fuller

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The Impact of Chip Shortages on the Electronics Industry - YouTube (1h)

by Microchip Technology

Sep 17, 2021

In this Industry Tech Days Keynote, we have an all-star panel of industry experts to talk about the ramifications of the global chip shortage and what lessons we can learn from them. You'll hear from Dave Doherty, President, and COO of distributor Digi-Key Electronics, Steve Sanghi, Executive Chair of semiconductor manufacturer Microchip Technology, and Michael Knight, Corporate Senior Vice President of Business Development of distributor TTI.

Notes on what Steve Sanghi said :

13m for 3m, 50% backlog (4 times normal)
(not wafers) shortages in leadframes, direct labor (due to stimulus)
16:00 lead time relief maybe mid-'22 though EoY-'22
26:30 for 3:20, what ifs, Category 6 hurricane that didn't form (lost an opportunity)
41:40 opportunities (?)
54:08 for 1m, personal PoV
56:57, a quote by Andy Grove

 

"Dare to be naïve." - Buckminster Fuller

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How Long Will it Take for the Chip Shortage to Ease? – EEJournal

Hint: Don’t Hold Your Breath says Intel CEO Pat Gelsinger

by Steven Leibson

October 4, 2021

...

Toyota benefited from having a large chip stockpile because the company had revamped its plans for business continuity in the wake of a catastrophe caused by the Fukushima earthquake and tsunami disasters a decade ago. But no stockpile lasts forever without replenishment.

...

[figure titled 200mm Semiconductor Capacity and Fab Count]

... there’s currently a building boom in 200 mm fabs and an increase in the aggregate number of wafers these fabs can produce.

...

... there are two reasons for the current chip shortage. The first, and biggest reason, I think, is skyrocketing demand. 

...

The other reason happens to be packaging. There just aren’t enough IC packages to house all of that silicon coming out of the fabs.

...

[in last paragraph]

In July, [Pat] Gelsinger [Intel CEO] predicted that it would take a year or two to bring semiconductor supply back into balance with demand. 

 

https://www.eejournal.com/article/how-long-will-it-take-for-the-chip-shortage-to-ease/#comment-79751

by kdoherty99

...

This trend [premature obsolescense] is affecting primarily manufacturers with longer product design and lifecycles. Industries like Medical Equipment, Avionics, Military Systems and the like.

...

wrt Microchip, the lead frame shortage is a factor.

 

"Dare to be naïve." - Buckminster Fuller

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"Dare to be naïve." - Buckminster Fuller

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Interesting that I've seen a couple of comments recently from car manufacturers who reckon that chip shortages will continue through to the end of 2022.

#1 Hardware Problem? https://www.avrfreaks.net/forum/...

#2 Hardware Problem? Read AVR042.

#3 All grounds are not created equal

#4 Have you proved your chip is running at xxMHz?

#5 "If you think you need floating point to solve the problem then you don't understand the problem. If you really do need floating point then you have a problem you do not understand."

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"Dare to be naïve." - Buckminster Fuller

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Quote:

Notes on what Steve Sanghi said :

13m for 3m, 50% backlog (4 times normal)
(not wafers) shortages in leadframes,

U.S. Warns Chip Shortage to Last Into Late 2022 as Inventories Dip | Electronic Design

by James Morra

Jan. 28, 2022

The Commerce Department said an industry survey showed mature nodes of microcontrollers, optoelectronics, and analog chips reeling from acute supply shortages.

...

 

"Fragile" Supply Chain

...

 

Supply Bottlenecks

[third paragraph]

The primary bottleneck is wafer production capacity, which she [Gina Raimondo, USA Commerce Secretary] said has no obvious short-term solution.

[insufficient capacity at legacy wafer fab process geometries of 40 nm, 90 nm, and 130 nm]

[beginning of eighth paragraph]

The Commerce Department said substrates that connect a die to a circuit board have also become a key chokepoint in the supply chain. 

[ninth paragraph : insufficient supply of wafers and epoxy]

[last paragraph]

Moreover, there are widespread delays in testing and packaging chips before they are ready to ship out.

 

Private And/Or Public

...

AVR are on legacy wafer fab processes though Microchip Technology wafer fab most AVR other than apparently AVRxm and likely AVR Dx (an AVRxt)

Microchip Technology is reasonably organic on AVR.

 

P.S.

How Much Longer Will It Take to Fix the Chip Shortage? | Electronic Design

by James Morra

March 14, 2022

The global chip shortage is entering its second year, and there are a lot of variables complicating the recovery.

...

[mid-page]

GlobalFoundries, the largest U.S.-based contract chip maker, said that wafer capacity for its more mature nodes is sold out through 2023 even as it plans to boost its production capacity by 50% in the same span.

The AVRxm drought may become exceptional (lead time significantly greater than the current lead times of 53 weeks quote and 61 weeks estimated)

 


Chip Shortages and Counterfeits | Electronic Design

 

XMEGA Lead Time, Dec'20 | AVR Freaks

https://www.microchipdirect.com/product/ATXMEGA128A1U-CU

Order now, can ship on 05-May-2023

ATXMEGA128A1U-CU Microchip Technology | Mouser

Factory Lead-Time:    61 Weeks

 

"Dare to be naïve." - Buckminster Fuller

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My daughter in law has started researching for a new dishwasher.... I wonder if there will be any available when she wants to "pull  the trigger".

 

Ross McKenzie, Melbourne Australia

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Has she been reading too many detective novels?   cheeky

When in the dark remember-the future looks brighter than ever.   I look forward to being able to predict the future!

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US$1 PIC becomes US$4 each and I have to wait for half year or more.

 

What could be worse?  surprise

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HKPhysicist wrote:
US$1 PIC becomes US$4 each
About right

HKPhysicist wrote:
and I have to wait for half year or more.
Some are doing PCB respins, others are patching PCBA.

HKPhysicist wrote:
What could be worse?  surprise
Collapse of credit (akin to the start of the '08 Great Recession though of much greater scope)

 


Microchip Chip Shortage | Microchip

[post #28, last sentence]

To repair an automated storage system I needed only 1 piece in the SO8 capsule. I put a wired DIP8 and found the original component (TI) at a local reseler.

 

"Dare to be naïve." - Buckminster Fuller

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HKPhysicist wrote:
What could be worse?  surprise

 

Waking up to find tanks on your lawn? Let's keep a sense of proportion here, folks.

 

Neil

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HKPhysicist wrote:
What could be worse?  surprise
Sourcing MCU by e-commerce.

WCH MCS-51(8051) USB MCUs | AVR Freaks

"Dare to be naïve." - Buckminster Fuller

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It's not just Atmel/Microchip. Today's snapshot...

 

 

...so Farnell/Element14 have 11,223 8-bits in their database. But....

 

 

...not many in stock. And many of those that are available are what might be called 'mature'. And many other are not available in production quantities, not matter how small that is.

 

 

[E2A]

One choice of chip...

 

Ouch...

 

 

 

 

#1 Hardware Problem? https://www.avrfreaks.net/forum/...

#2 Hardware Problem? Read AVR042.

#3 All grounds are not created equal

#4 Have you proved your chip is running at xxMHz?

#5 "If you think you need floating point to solve the problem then you don't understand the problem. If you really do need floating point then you have a problem you do not understand."

Last Edited: Wed. May 11, 2022 - 12:57 PM
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Brian Fairchild wrote:
One choice of chip...
The AVRe+ and AVRxt logjam should be breaking "soon".

Advantage Microchip Technology as are mostly organic for those though all MCU manufacturers are dependent on wafers, lead frames, and epoxy.

An alternative are the AVR Dx variants of AVRxt (core voltage regulator)

 

Lead Time | World's Largest Inventory of Microchip Products

sampled : mega328PB (Oct'22), mega4808 (Jul'22), AVR64DB28 (mostly stocked)

 

"Dare to be naïve." - Buckminster Fuller

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gchapman wrote:

An alternative are the AVR Dx variants of AVRxt (core voltage regulator)

 

Just as Covid hit I did lay in a stock of Dx chips as I could see what was coming. It just feels wrong using them when I'd have used a tiny of some description before. Designing a new product based on what I can (afford to) buy now, in quantities to last 18 months, is a bit of a turn around. Usually it's a read of the datasheets first, no a tick of the 'in stock' box on the distis website.

#1 Hardware Problem? https://www.avrfreaks.net/forum/...

#2 Hardware Problem? Read AVR042.

#3 All grounds are not created equal

#4 Have you proved your chip is running at xxMHz?

#5 "If you think you need floating point to solve the problem then you don't understand the problem. If you really do need floating point then you have a problem you do not understand."

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Brian Fairchild wrote:
And many of those that are available are what might be called 'mature'.
Some OEM have resurrected EOL or extended NRND products.

 

"Dare to be naïve." - Buckminster Fuller

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Brian Fairchild wrote:
... when I'd have used a tiny of some description before.
A relative few AVRe tinyAVR have reasonable stocking (IIRC tiny85)

Microchip Technology wafer fabs are overbooked whereas the AVR that are wafer fab by SMIC may have greater stocking.

 

Lead Time | World's Largest Inventory of Microchip Products

How to search for Microchip PCNs

 

"Dare to be naïve." - Buckminster Fuller

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New Product Validation (NPV) is in addition to PSP.

NPV | Microchip Technology Inc.

 

"Dare to be naïve." - Buckminster Fuller

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more by Steve Sanghi

in Where The Real Chip Shortage Is - YouTube (11m52s)

  • introduction is the popular SAMD21
  • 16 nm to 250 nm is trailing edge and 50% of revenue (IIRC AVR minus AVR Dx is in the middle of that range)
  • "Logjam" (two quarter production dip due to COVID-19 responses led to overbooking then over-utilization of wafer fabs)
  • reluctance to invest in new trailing edge wafer fabs
  • greater revenue with 300 mm wafers
  • difficult to re-spin analog, mixed-signal, RF, and MEMS (recent AVR have noisy op amps in bulk CMOS [AVR DB])
  • 28 nm "sweet" spot wrt revenue per wafer
  • trailing edge for automotive (temperature range, reliability, 40% of demand)
  • supply driven when lead times exceed 18 months (8:07 Mr. Beansmiley, more trailing edge wafer fabs by TSMC in Taiwan and Japan and by Samsung and by China's SMIC and by India's Vedanta, USA CHIPS allocates 2 billion USD)
  • "retrofitting" - move wafer fabs to 300 mm wafers, die re-spin (130 nm FOSS)
  • conclusion - one to two years, "excess" wafer fab capacity meets recession

 


Tempe Fab 2, Gresham Fab 4 | AVR Freaks (300 mm wafers by Microchip Technology for most AVR excepting AVRxt AVR Dx and AVRxm)

GitHub - google/skywater-pdk: Open source process design kit for usage with SkyWater Technology Foundry's 130nm node.

 

"Dare to be naïve." - Buckminster Fuller