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Is STM32 still in shortage? I remember it being the largest blocker in one of my projects last year. Especially that high end H7 chip. Oh and we runned a Tenso

by gaudat 4y ago

Is STM32 still in shortage? I remember it being the largest blocker in one of my projects last year. Especially that high end H7 chip. Oh and we runned a Tensorflow Lite image processing pipeline on that chip. It is probably a few times too powerful for fiddling pins and an IP stack.

ISL 4y ago
> It is probably a few times too powerful for fiddling pins and an IP stack. Then it'll definitely do the job!
oytis 4y ago
Maybe they took it because it's dual core? Running everything connectivity-related on one CPU and have real-time code own the other one completely seems to be a good idea to me.
numlock86 4y ago
> Is STM32 still in shortage? In some cases they've never been. It depends on the series. A lot of their portfolio is being made in external fabs like TSMC, whose allocations they gave up when Corona started as they were thinking the chip demand will go down. (Oh boy were they wrong.) On the other hand they still had allocations (in their "own" fabs), so depending on what you want they deliver. Problem is basically anything "mainstream" was in external fabs, e.g. the entire STM32F0 to STM32F4 series. In contrast, if you want an STM32L0 oder STM32L4, you can still order like nothing happened.
- fps-hero 4y ago
  Based on what you could buy through distributors, less than 5% of the STM32 lineup is available to buy. The situation was worse, 6 months ago there were 27 variants available on Digikey of the 3000 or so they make. The G series seems to have good availability at the moment, if I was going to bet on a MCU for a new design that would be it. L series has only just gotten better, couldn’t get them a few months ago. Some F3 chips have been looked over (didn’t go out of stock) despite being more advanced than their F4 counterparts. That’s marketing I guess.
the__alchemist 4y ago
Yes, for small players at least. I've been refreshing Octopart for G4s and H7s (in certain footprints) for a year with no luck, other than scoring a few G4s for prototyping that soon went out of stock. I'm assuming larger players have access. There are some variants/footprint combos you can get. For example, I've been able to get G431s for a while in the right footprint, which is similar to the one I'm looking for , but with less flash and ram. Or, I can can an H7 in a way-too-big footprint. Other MCUs like Nordic and ESP went through the shortage with no unavailability. Not sure if STM's comparatively large product lineup (as opposed to there only being a handful of Nordic and ESP variants) played into this.
- kevin_thibedeau 4y ago
  Espressif has an advantage that they don't have on board flash. That boosts yield and volume per wafer. At this point I won't be doing new designs with STM32 because ST can't deliver.
  - the__alchemist 4y ago
    I think the newer ones (8285, 32 pico D4 and V3) have onboard flash.

by gaudat 4y ago

ISL 4y ago

> It is probably a few times too powerful for fiddling pins and an IP stack. Then it'll definitely do the job!

oytis 4y ago

Maybe they took it because it's dual core? Running everything connectivity-related on one CPU and have real-time code own the other one completely seems to be a good idea to me.

numlock86 4y ago

> Is STM32 still in shortage? In some cases they've never been. It depends on the series. A lot of their portfolio is being made in external fabs like TSMC, whose allocations they gave up when Corona started as they were thinking the chip demand will go down. (Oh boy were they wrong.) On the other hand they still had allocations (in their "own" fabs), so depending on what you want they deliver. Problem is basically anything "mainstream" was in external fabs, e.g. the entire STM32F0 to STM32F4 series. In contrast, if you want an STM32L0 oder STM32L4, you can still order like nothing happened.

fps-hero 4y ago
Based on what you could buy through distributors, less than 5% of the STM32 lineup is available to buy. The situation was worse, 6 months ago there were 27 variants available on Digikey of the 3000 or so they make. The G series seems to have good availability at the moment, if I was going to bet on a MCU for a new design that would be it. L series has only just gotten better, couldn’t get them a few months ago. Some F3 chips have been looked over (didn’t go out of stock) despite being more advanced than their F4 counterparts. That’s marketing I guess.

the__alchemist 4y ago

Yes, for small players at least. I've been refreshing Octopart for G4s and H7s (in certain footprints) for a year with no luck, other than scoring a few G4s for prototyping that soon went out of stock. I'm assuming larger players have access. There are some variants/footprint combos you can get. For example, I've been able to get G431s for a while in the right footprint, which is similar to the one I'm looking for , but with less flash and ram. Or, I can can an H7 in a way-too-big footprint. Other MCUs like Nordic and ESP went through the shortage with no unavailability. Not sure if STM's comparatively large product lineup (as opposed to there only being a handful of Nordic and ESP variants) played into this.

kevin_thibedeau 4y ago
Espressif has an advantage that they don't have on board flash. That boosts yield and volume per wafer. At this point I won't be doing new designs with STM32 because ST can't deliver.
- the__alchemist 4y ago
  I think the newer ones (8285, 32 pico D4 and V3) have onboard flash.