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Groups > sci.electronics.design > #462736
| From | rickman <gnuarm@gmail.com> |
|---|---|
| Newsgroups | sci.electronics.design |
| Subject | Re: Reliability of microcontroller silicon die glue on top of another die |
| Date | 2017-06-02 15:22 -0400 |
| Organization | A noiseless patient Spider |
| Message-ID | <ogsdnf$85q$1@dont-email.me> (permalink) |
| References | (12 earlier) <7530b16d-d50a-437a-a4a8-3b6d988805f8@googlegroups.com> <ogrvii$jif$1@dont-email.me> <7f8931fb-e9d5-4a1b-b548-e78530e2ac6a@googlegroups.com> <ogs7kf$6qi$1@dont-email.me> <e961b4b6-5225-4ea3-9685-5688db09cdaf@googlegroups.com> |
Klaus Kragelund wrote on 6/2/2017 1:47 PM: > On Friday, June 2, 2017 at 7:38:46 PM UTC+2, rickman wrote: >> klaus.kragelund@gmail.com wrote on 6/2/2017 1:01 PM: >>> On Friday, 2 June 2017 17:21:13 UTC+2, rickman wrote: >>>> klaus.kragelund@gmail.com wrote on 6/2/2017 4:13 AM: >>>>> On Friday, 2 June 2017 02:04:06 UTC+2, rickman wrote: >>>>>> Klaus Kragelund wrote on 6/1/2017 7:47 PM: >>>>>>> Datasheet: >>>>>>> >>>>>>> http://www.gsense.com.cn/Uploadfiles/20144241734995881.pdf >>>>>> >>>>>> WTF? You had to find the data sheet on a third party web site??? >>>>>> >>>>>> Ok, I dug a bit at gsense.com and it seems they are the parent company. How >>>>>> did you find the data sheet? >>>>>> >>>>> >>>>> Google is your friend >>>> >>>> If I have to use Google to find a data sheet, I figure the company must not >>>> make the parts anymore or at least aren't looking for sales. >>>> >>>> >>>>>>> Price = 0.3 USD in volume, at least 25% cheaper than the STM32 >>>>>> >>>>>> Where did you get a price? >>>>>> >>>>> >>>>> Page 11: >>>>> >>>>> http://site.eettaiwan.com/events/iot/201607/pdf/GigaDevice-GD32-Cortex-M3-MCU-ECCN.pdf >>>> >>>> Ok, a BS marketing price. Which part, what quantity... >>>> >>>> >>>>>>> The process is split, so one is logic and SRAM. The other is flash. Always cheaper to separate technologies >>>>>> >>>>>> Huh? Having two die is not so cheap. If two separate die are "always" >>>>>> better, why do they combine the Flash with CPU in most cases for chips in >>>>>> this range? >>>>>> >>>>> >>>>> In this case it's cheaper, as far as I know because they only pay ARM licencing for a chip without flash, and they have good grip on the flash technology >>>> >>>> Who says it is cheaper? If you can't buy them it doesn't matter. I can't >>>> find anyone who sells them. >>>> >>>> >>>>>>> Operation from SRAM draws less current >>>>>> >>>>>> I don't see that in the numbers in the data sheet. ~300 uA/MHz. >>>>>> >>>>> >>>>> It's not specifically stated. For reference look up the STM32 datasheet >>>> >>>> The point is 300 uA/MHz is not even in the running for low power these days. >>>> The fact that running from SRAM *should* use less current doesn't mean >>>> their chips are competitive. I believe the forefront of low power ARMs is >>>> in the 100 uA/MHz these days. Am I mistaken? >>>> >>>> -- >>> Check for example the STM32F130 datasheet, page 42: >>> >>> http://www.st.com/content/ccc/resource/technical/document/datasheet/33/d4/6f/1d/df/0b/4c/6d/CD00161566.pdf/files/CD00161566.pdf/jcr:content/translations/en.CD00161566.pdf >>> >>> SRAM is about 10% lower power consumption than flash >> >> You are comparing the Giga part to an ST part that is 10 years old, right? >> 300 uA/MHz is not on the forefront of power efficiency. TI and Silicon Labs >> have CM3 and CM4 parts that can reach power consumption below 100 uA/MHz. >> >> The issue is not about features but about specifications. I don't care how >> an MCU gets low power. The Giga part is not in the realm of what is >> considered low power anymore. >> > Yes, but you certainly won't get a low power ST part in that price range > > Low power is a sales feature until they all have that feature 😀 > > Comparing apples to apples 🍎 The point is you are claiming the use of an external Flash allows *lower* power operation. That is irrelevant when the chip spec is *much* worse than others in the same performance class. If you want to compare prices, then compare prices. This isn't about apples. The $0.30 price is not a quote, it is a mythical price based on buying some enormous quantity. Since their parts aren't actually offered for sale anywhere that I would be buying them it doesn't matter what price a marketing sheet says they go for. I did find Symmetry that offers them for $0.71. -- Rick C
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Reliability of microcontroller silicon die glue on top of another die klaus.kragelund@gmail.com - 2017-05-31 16:08 -0700
Re: Reliability of microcontroller silicon die glue on top of another die krw@notreal.com - 2017-05-31 19:22 -0400
Re: Reliability of microcontroller silicon die glue on top of another die Klaus Kragelund <klauskvik@hotmail.com> - 2017-05-31 23:27 -0700
Re: Reliability of microcontroller silicon die glue on top of another die krw@notreal.com - 2017-06-01 12:58 -0400
Re: Reliability of microcontroller silicon die glue on top of another die Lasse Langwadt Christensen <langwadt@fonz.dk> - 2017-06-01 10:14 -0700
Re: Reliability of microcontroller silicon die glue on top of another die rickman <gnuarm@gmail.com> - 2017-06-01 14:56 -0400
Re: Reliability of microcontroller silicon die glue on top of another die krw@notreal.com - 2017-06-01 18:21 -0400
Re: Reliability of microcontroller silicon die glue on top of another die Lasse Langwadt Christensen <langwadt@fonz.dk> - 2017-06-01 15:37 -0700
Re: Reliability of microcontroller silicon die glue on top of another die krw@notreal.com - 2017-06-01 18:40 -0400
Re: Reliability of microcontroller silicon die glue on top of another die Lasse Langwadt Christensen <langwadt@fonz.dk> - 2017-06-01 15:55 -0700
Re: Reliability of microcontroller silicon die glue on top of another die krw@notreal.com - 2017-06-01 19:03 -0400
Re: Reliability of microcontroller silicon die glue on top of another die Klaus Kragelund <klauskvik@hotmail.com> - 2017-06-01 16:47 -0700
Re: Reliability of microcontroller silicon die glue on top of another die Klaus Kragelund <klauskvik@hotmail.com> - 2017-06-01 16:51 -0700
Re: Reliability of microcontroller silicon die glue on top of another die pcdhobbs@gmail.com - 2017-06-01 17:09 -0700
Re: Reliability of microcontroller silicon die glue on top of another die Jim Thompson <To-Email-Use-The-Envelope-Icon@On-My-Web-Site.com> - 2017-06-01 17:12 -0700
Re: Reliability of microcontroller silicon die glue on top of another die krw@notreal.com - 2017-06-01 20:17 -0400
Re: Reliability of microcontroller silicon die glue on top of another die rickman <gnuarm@gmail.com> - 2017-06-01 20:04 -0400
Re: Reliability of microcontroller silicon die glue on top of another die klaus.kragelund@gmail.com - 2017-06-02 01:13 -0700
Re: Reliability of microcontroller silicon die glue on top of another die rickman <gnuarm@gmail.com> - 2017-06-02 11:21 -0400
Re: Reliability of microcontroller silicon die glue on top of another die klaus.kragelund@gmail.com - 2017-06-02 09:51 -0700
Re: Reliability of microcontroller silicon die glue on top of another die klaus.kragelund@gmail.com - 2017-06-02 10:01 -0700
Re: Reliability of microcontroller silicon die glue on top of another die rickman <gnuarm@gmail.com> - 2017-06-02 13:38 -0400
Re: Reliability of microcontroller silicon die glue on top of another die Klaus Kragelund <klauskvik@hotmail.com> - 2017-06-02 10:47 -0700
Re: Reliability of microcontroller silicon die glue on top of another die rickman <gnuarm@gmail.com> - 2017-06-02 15:22 -0400
Re: Reliability of microcontroller silicon die glue on top of another die Klaus Kragelund <klauskvik@hotmail.com> - 2017-06-02 12:36 -0700
Re: Reliability of microcontroller silicon die glue on top of another die rickman <gnuarm@gmail.com> - 2017-06-02 15:54 -0400
Re: Reliability of microcontroller silicon die glue on top of another die krw@notreal.com - 2017-06-01 20:20 -0400
Re: Reliability of microcontroller silicon die glue on top of another die krw@notreal.com - 2017-06-01 20:24 -0400
Re: Reliability of microcontroller silicon die glue on top of another die klaus.kragelund@gmail.com - 2017-06-02 01:19 -0700
Re: Reliability of microcontroller silicon die glue on top of another die krw@notreal.com - 2017-06-02 12:47 -0400
Re: Reliability of microcontroller silicon die glue on top of another die klaus.kragelund@gmail.com - 2017-06-02 09:56 -0700
Re: Reliability of microcontroller silicon die glue on top of another die krw@notreal.com - 2017-06-02 17:35 -0400
Re: Reliability of microcontroller silicon die glue on top of another die klaus.kragelund@gmail.com - 2017-06-02 15:43 -0700
Re: Reliability of microcontroller silicon die glue on top of another die krw@notreal.com - 2017-06-02 18:58 -0400
Re: Reliability of microcontroller silicon die glue on top of another die Klaus Kragelund <klauskvik@hotmail.com> - 2017-06-02 16:27 -0700
Re: Reliability of microcontroller silicon die glue on top of another die krw@notreal.com - 2017-06-02 19:31 -0400
Re: Reliability of microcontroller silicon die glue on top of another die whit3rd <whit3rd@gmail.com> - 2017-06-03 15:09 -0700
Re: Reliability of microcontroller silicon die glue on top of another die krw@notreal.com - 2017-06-03 20:35 -0400
Re: Reliability of microcontroller silicon die glue on top of another die whit3rd <whit3rd@gmail.com> - 2017-06-01 20:10 -0700
Re: Reliability of microcontroller silicon die glue on top of another die klaus.kragelund@gmail.com - 2017-06-02 01:22 -0700
Re: Reliability of microcontroller silicon die glue on top of another die krw@notreal.com - 2017-06-02 12:50 -0400
Re: Reliability of microcontroller silicon die glue on top of another die klaus.kragelund@gmail.com - 2017-06-02 01:24 -0700
Re: Reliability of microcontroller silicon die glue on top of another die David Brown <david.brown@hesbynett.no> - 2017-06-02 15:38 +0200
Re: Reliability of microcontroller silicon die glue on top of another die krw@notreal.com - 2017-06-02 12:51 -0400
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