Thanks for sharing, it would be very nice if you could tell which part numbers from the brands has the lowest price, so we can choose them sooner, also if you could tell which parts are very poplar out there, it would help too.
thanks for the reply, do we have a sub 0.5$ part for replacing STM32F030KT6? note that the pinout is not important, since we can design a NEW PCB, I need something in the 0.5$ price range with at least 32KB Flash and 4K RAM
I will update this list when new interesting companies pops up.
I appreciate it! But how can you forget Paduak? Oh, right, you said 32 bit.
Do you know enough about them to also cover applications processors? The Allwinners and Rockchips and I don't know what else? Many of their products are priced comparably to MCUs. I believe some of them have in-package DRAM -- I heard some or even most models of the new Allwinner D1 will have, and an external DRAM bus might be unusual. They do tend to come in difficult to use packages though.
I think most of us appreciate the genuine Chinese manufacturers and the engineers who work in them.
Bump: MASSIVE edit adding MPU and FPGA to the thread, and adding Chinese names to the companies involved.
Are there any distribution outlets for these parts?
Outside China?
Inside China but accessible for medium volume?
LCSC has/had a few WCH parts. Mouser used to stock Gowin, Edge may still be distributing Gowin.
QuoteBump: MASSIVE edit adding MPU and FPGA to the thread, and adding Chinese names to the companies involved.Thanks for sharing, Gowin is very good, Please add more info on Cortex A parts and very low priced MCU families.
I appreciate it! But how can you forget Paduak? Oh, right, you said 32 bit.
Do you know enough about them to also cover applications processors? The Allwinners and Rockchips and I don't know what else? Many of their products are priced comparably to MCUs. I believe some of them have in-package DRAM -- I heard some or even most models of the new Allwinner D1 will have, and an external DRAM bus might be unusual. They do tend to come in difficult to use packages though.
I think most of us appreciate the genuine Chinese manufacturers and the engineers who work in them.Chinese Application Processor makers usually keeps their documentations to themselves and intentionally bury bugs in the docs to force anyone that want to make any viable projects to rely on their support and submit to their customers control system. Since that system isn't exactly friendly to makers, I will largely ignore them unless there are significant mainlining efforts going on and I can verify that you can buy their chips on quantity of 10 or less and have access to a largely bug-free set of docs.
How come Espressif has been forgotten?
This looks interesting but which parts have English documentation available? I just looked at Anlogic website but no English version of the website (but that can be worked around with Google translate so no big problem) and access to datasheets is behind a login so I have no idea whether there are English datasheets are available.
technix, How can I contact this company hsxp-hk.com, they have HK32F030K6T6 I think it can be used for replacing STM32F030K6T6, do you have their email or skype account? they have a china phone line for contact, and certainly I can not talk Chinese
Please help me to be In Touch with them, trough email.
thanks
technix, How can I contact this company hsxp-hk.com, they have HK32F030K6T6 I think it can be used for replacing STM32F030K6T6, do you have their email or skype account? they have a china phone line for contact, and certainly I can not talk Chinese
Please help me to be In Touch with them, trough email.
thanks
I got the docs for those HK32 chips, although they only have Chinese docs. I am asking them for possible Email contact and how to get samples.
Chinese Application Processor makers usually keeps their documentations to themselves and intentionally bury bugs in the docs to force anyone that want to make any viable projects to rely on their support and submit to their customers control system.
Chinese Application Processor makers usually keeps their documentations to themselves and intentionally bury bugs in the docs to force anyone that want to make any viable projects to rely on their support and submit to their customers control system.
But why? I thought most companies want as few customer requests as possible to reduce service costs?
I imagine they don't the service requests, they want the sales leads.
But why? I thought most companies want as few customer requests as possible to reduce service costs?
Why would I buy a chip which has defects in its datasheet?
It just makes me mad to think about the projects I could make if a Cortex A7 chip from e.g. Allwinner would have open documentation (at the price they are selling currently)
But they don't mind making linux-sunxi work for free to mainline their CPUs
Edit: Actually I have to tell you a very positive experience I had with one chinese company (they make a WiFi chip similar to the ESP32 but with Cortex M4): I asked them (in english) for a low amount of samples (15 pieces). I didn't have to ask twice and they shipped the samples including one of their discovery boards to the address of my taobao agent without me paying anything. Great service
Thanks to this great thread I found this chinese "equivalent" (not quite but still potentially useful) for the 32F407
https://www.eevblog.com/forum/microcontrollers/opinions-on-st-32f407vgt6-versus-gigadevice-gd32f407vgt6/
Where to actually buy the GD is a very good Q...
They only seem to have stock of ...
GD32VF103CBT6
GD32VF103RBT6
GD32VF103TBU6
GD32VF103VBT6
... at the moment.
Can anyone report on the peripheral compatibility of these Chinese chips?
The 32 bit ARM uCs are a licensed ARM32 core and then they synthesise the peripherals to try to match the 32F RM descriptions. But they obviously won't get it exactly the same. The theory is of course that if you wrote your code to the RM, it should work. But we all know this is BS. Looks here for a list for example
http://efton.sk/STM32/gotcha/index.html
Bump.
Should I start another thread asking about where I can actually buy parts from Allwinner (A20) and Rockchip (RK3328), or is this a good place for that?
Where do places like Olimex get them? If the answer is "direct", what are typical minimum orders and how likely are they to have samples/engineering qty for purchase?
Does anyone here actually have real experience using any of these SoC in production?
Another thing I would love to know more seems to be a small FPGA with a RISC-V hard core from Anlogic: https://www.anlogic.com/product/fpga/salswift
Sadly, it seems that Anlogic does not want customers out of China...
There is some stock at LCSC for the CH32V307. Not much else at the moment?
The availability of WCH MCUs is a problem at least for us outside of China. You can probably contact WCH directly, but I suspect they won't care much unless you order (hundreds of) thousands of chips.
Are WCH MCUs going back on LCSC?
I'm interested in CH32X033F8P6 in particular.
Is there a digikey/mouser equivalent for chips listed in this thread?
I know I can usually get ESP32s from Digikey, but from time to time one or two are export controlled and my orders get canceled - happened with xiao esp32-s3 sense and esp32-h2 devkits.
Only supplier for devboards I have used to circumvent this is the chinese seeeduino warehouse but I was wondering if there was another digikey like website.
thanks for the reply, do we have a sub 0.5$ part for replacing STM32F030KT6? note that the pinout is not important, since we can design a NEW PCB, I need something in the 0.5$ price range with at least 32KB Flash and 4K RAM