When STM32L4 Plus series will be available to buy?
Any datasheets yet?
Thanks for your interest on our future STM32 products.
It will be announced and available mid of November.
If you need to know more in between I suggest you to contact your STMicroelectronics contact or distributor.
stcube already provides device headers. With a "diff" you can see the differences...
Found some info about it at the end of this presentation:
Current L4 parts run north of 150 MHz, 120 MHz is hardly a stretch...
Current L4 parts run north of 150 MHz
On the bench the L476RG topped out at 158 MHz, the L496ZG somewhat below, they both perform solidly at 140 MHz.
Both have 3-bit wait state counter, so primary constraint is ART/prefetch path.
The 120 MHz number is probably with 60 MHz APB
They may be artificially underrated by ST to create room for step-up, or because testing for higher frequencies might be too expensive, or any other reason - but I tend to stick to the DS values for the stuff we sell.
No doubt, this was more of an intellectual exercise to see how much headroom there was in the design. Figuring more advantageous design than the original F2/F4, better process, and peripheral buses now running at 100-108 MHz in some of the designs.
The Cortex-M0(+) parts can also run faster than advertised, but with limited flash wait state options, pll settings, and no cache/prefetch as speed ramps above 28 MHz the speed of the flash becomes dominant.
L432KC topped out at 150 MHz
Hello STM32 fans,
Today ST officialy announced the STM32L4+ family of MCUs, which was discussed in this forum's thread. Here is the link to press release. Key improvements of L4+ comparing to L4 are:
More information about MCUs and tools ecosystem you can find on product webpage.
Yeah we're discussing it since this morning on a local mcu web, mainly the new DISCO. User manual missing but we hope that's just temporary.
The question is: will the circular display be sold separately?
The description of this new Disco sounds interesting, yes.
My question - how did ST (or the supplier) manage it to square the circle ?
1.2” 390x390 pixel AMOLED round display panel ...
Regarding the question: will the circular display be sold separately?
In past ST decided to do such thing for other board with display, which is used on some Discovery kits (32F469IDISCOVERY, 32F769IDISCOVERY). Here is a link to this product. Based on this fact I believe it is possible to do similar thing with new display. But for now I don't have any information, so unfortunately I can't confirm it.
Regarding the question: how did ST (or the supplier) manage it to square the circle?
Please find below an explanation:
The display, which was used is a 1.2- inch AMOLED round display module with 390*RGB*390 dots and MIPI interface manufactured by I-excellence: link.
Well, 390x390 defines a square.
Does it mean that all pixels outside the circle (the blue one in your image) are not seen, and setting them has no effect ?
Probably really hard to define a video buffer for a circular display, display likely capable of dealing with the row/column issues, as lines likely run from the center up and down.
The linked website + Data Brief says 390x390, which is usually be interpreted as common row/column design.
Going to check out the UM when it's up ...
Yes, I confirm you assumption. In line0 of the display first visible pixel is 181 and last visible pixel is 208. For more information please refer to the Application Note AN5051: Graphic memory optimization with STM32 Chrom-GRC. You can find there a detailed explanation how Chrom-GRC works and the example is based on new 32L4R9IDISCOVERY kit.
Your post overtook mine ...
Thanks for the info.
Have a look at Mouser 423-G1120TB103GF
Not a low cost screen then... ST must be getting a better price
Arrow has DISCO boards, quoting $125, Mouser says they have delivery tomorrow quoting $89
I'd say the $89 is introductory price and it will be up to that $125 when the first batch sells out - this is how it was with the 'F723 DISCO.
Surely the sales chain pumps up the price of the displays quite significantly.
Arrow had 10, Mouser 20, so not stocking deeply..
Wow Uwe, thanks.
Ugh, the price is... I may buy a DiscoL4+, keep the display and throw the rest away... ;-)
My expectation is that there are likely instrumentation sized ones, not just stuff left over from failed watch or mediaplayer products. I don't think Apple would get out of bed for this resolution, so got to think there are bigger and more competitive displays in this format.
I'd take the boards, most of my stuff is headless...
I'm assuming these are going to be plug in compatible with ST's previous LCD connectors..
Mouser shipped my order today.
WOW WOW (by minion) - YouTube
On December 6th there will be a webinar about STM32L4+ and graphics solution from TouchGFX. If you would be interested in participating, here is a link with more information and here is a link for registration.
Display adapter for OLED 1.4" 400x400 round display to fit on STM32F769-DISCO | eBay
I wonder whether the jumpy clocks are feature of the video or just sloppy programming... ;-)
I fired up my 'F723 Disco I did not have time to play with yet, remembering there's a clock demo on that too... and yes, that's ticking irregularly too, although not that obviously than the one on that video. (Also the "warp mode" setup, which wont stop when exiting clock setup or exiting clock display altogether, is probably not what was intended.)
I understand that these demos are not ready-to-sell applications and are there only to show up the possibilities, but still...
[EDIT] Once I took that 'F723 DISCO down from the shelf... Besides the clock, demo contains a video player (needs some avi, have none and I am not much fan of the video realm so just left that), an audio player and audio recorder - all three need an OTG cable (or other means to connect a FLASH disk to a standard microAB), which was not attached, which is a pity. But I had one, luckily. Does not accept the cable/disk at the FS connector - OK I know the main feature of 'F723 is the high-speed PHY, but cm'on... So connected to HS, run the recording app, tried to record "one two three test"... it worked. The playback in the recorder worked OK too. But then I went to the playback application - and it played its own recording at something like 1/4 speed... Retried several times, with reboots etc. - still the same. REALLY???
Also USARTs add FIFO (8 words on Rx and Tx), didn't see mention in the Data Sheet, but is covered in the Reference Manual, and changes flag definitions in HAL
But for now I don't have any information, so unfortunately I can't confirm it.
If you can ask, please do so - and if you know any news on this, please let us know.
Thanks for the info and also for the link on the manufacturer.
AFAIK the circulation of square happens in the display controller in 'L4+, its one of its distinguished feature.
I haven't time to read the RM yet (if available) just seen the marketing stuff as being linked to far above.
>>AFAIK the circulation of square happens in the display controller in 'L4+, its one of its distinguished feature.
Yes, looks like you can describe the rasters with 16 byte granularity to save space.
Got me thinking about flight instrumentation...
Yeah that'd be very nice but this is a really tiny, watch-sized display...
L4 with 120MHZ is very good, it increase the range of applications. But it would be much better if it had kept the 3xADC, 2xCAN and 64 pins options. I would give up SRAM3 and OCTASPI for that.
They are quite impressive at 150 MHz, especially in a 32 pin package.
If I were ST I'd requalify the earlier parts in high speed bands, the design seems to have significant headroom.
L4+ Has APB1/APB2 buses rated to 120 MHz, and 4-bits for Flash wait states, had the STM32L4R9 running at 232 MHz, so again a lot of headroom in this design too.
ST specs are for a wide temperature range, so it is clear that in a restricted environment you have a lot of headroom...
One more update regarding new STM32L4+. For those, who would like to learn more about this new family of MCUs, ST prepared a nice online training: 57 sessions, each focusing on different subject, including new peripherals and features. Please find below a link.
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