Author Topic: Interesting microcontrollers from China no one heard about - how to use them?  (Read 2274 times)

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Offline soFPG

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What are these https://item.taobao.com/item.htm?spm=a230r.1.14.21.58ea4577rsSxvo&id=544473902221 ?
The only kind of resource I find about them online are chinese shops - no manufacturer. They say they are PIC10F200 compatible but some of them in a similiar price range are OTP - how can the programming interface (PicKit) be compatible in this case?
 

Offline blueskull

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What are these https://item.taobao.com/item.htm?spm=a230r.1.14.21.58ea4577rsSxvo&id=544473902221 ?
The only kind of resource I find about them online are chinese shops - no manufacturer. They say they are PIC10F200 compatible but some of them in a similiar price range are OTP - how can the programming interface (PicKit) be compatible in this case?

Programmer: https://m.intl.taobao.com/detail/detail.html?id=544300886130&spm=a21wu.9600033.recommend.1&main_itemid=544473902221&go_item_id=544300886130&scm=1007.10766.85773.1002003000000001&pvid=7a34b622-f0c6-4682-8f4d-b86eb237a3f1&track_params=%7B"pre_seller_id"%3A"107061321"%2C"match_type"%3A"3_544473902221_107_667_361_460_150_"%7D
SIGSEGV is inevitable if you try to talk more than you know. If I say gibberish, keep in mind that my license plate is SIGSEGV.
 
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Offline soFPG

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Thanks alot - your knowledge about hardware and what to find where is surprising to me  :-+

Are they just exact clones of PIC-µCs? As I mentioned already - I don't find any documents about them. Do you also have a hint for me this time?
 

Offline Kjelt

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Programmer: https://m.intl.taobao.com/detail/detail.html?id=544300886130&spm=a21wu.9600033.recommend.1&main_itemid=544473902221&go_item_id=544300886130&scm=1007.10766.85773.1002003000000001&pvid=7a34b622-f0c6-4682-8f4d-b86eb237a3f1&track_params=%7B"pre_seller_id"%3A"107061321"%2C"match_type"%3A"3_544473902221_107_667_361_460_150_"%7D
Below they sell pic micrcontroller for 0,5 to 2 CNY that would be €0,06 to €0,25  :o
Too bad I can't read chinese, on the other hand I think my room is already full enough  :)
 

Offline janekm

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What are these https://item.taobao.com/item.htm?spm=a230r.1.14.21.58ea4577rsSxvo&id=544473902221 ?
The only kind of resource I find about them online are chinese shops - no manufacturer. They say they are PIC10F200 compatible but some of them in a similiar price range are OTP - how can the programming interface (PicKit) be compatible in this case?

Sometimes what they mean is just that the are pin-compatible. If you are making 1000000 of a product, you may not mind rewriting the firmware.
 

Offline blueskull

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What are these https://item.taobao.com/item.htm?spm=a230r.1.14.21.58ea4577rsSxvo&id=544473902221 ?
The only kind of resource I find about them online are chinese shops - no manufacturer. They say they are PIC10F200 compatible but some of them in a similiar price range are OTP - how can the programming interface (PicKit) be compatible in this case?

Sometimes what they mean is just that the are pin-compatible. If you are making 1000000 of a product, you may not mind rewriting the firmware.

The taobao page specifically says it is bit compatible with pic.
SIGSEGV is inevitable if you try to talk more than you know. If I say gibberish, keep in mind that my license plate is SIGSEGV.
 

Offline Elasia

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Interesting company

https://item.taobao.com/item.htm?spm=2013.1.w4004-16634479443.12.22113245XUQCwS&id=36803356892

scroll through that and they more or less say they authorized by Microchip
 

Offline blueskull

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Interesting company

https://item.taobao.com/item.htm?spm=2013.1.w4004-16634479443.12.22113245XUQCwS&id=36803356892

scroll through that and they more or less say they authorized by Microchip

Where? I only saw they carry genuine pic, not saying they are authorized dealer.
SIGSEGV is inevitable if you try to talk more than you know. If I say gibberish, keep in mind that my license plate is SIGSEGV.
 

Online coppice

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Interesting company

https://item.taobao.com/item.htm?spm=2013.1.w4004-16634479443.12.22113245XUQCwS&id=36803356892

scroll through that and they more or less say they authorized by Microchip

Where? I only saw they carry genuine pic, not saying they are authorized dealer.
I think he was referring to the picture showing they are (or were - its from 2007) a Microchip Design Partner. There are a lot of those. Its fairly easy to become one.
 

Offline ^_^

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There's GD (GigaDevice). They're not that small (e.g. Keil supports some), but being embedded engineer in Europe for few years, I've never ever heard of this...

These guys basically did a ST clone (ST's are apparently very popular in China).
They also license ARM, they also license USB ipcore. Peripherals are the same.
The best (funniest) thing is that they use same memory map, so most code will run without modifying it. One can also use ST libraries  :-DD

Why would one use them? I guess quantity price. Commercial purposes :)

 

Offline soFPG

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Offline janoc

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They are real - here is a series of articles comparing STM32F103 vs GD32F103

https://smdprutser.nl/blog/stm32f103-vs-gd32f103/
https://smdprutser.nl/blog/stm32f103-vs-gd32f103-round-1-solderability/
https://smdprutser.nl/blog/stm32f103-vs-gd32f103-round-2-blink-a-led/
https://smdprutser.nl/blog/stm32f103-vs-gd32f103-round-3-uart/

It is using regular ARM SWD and JTAG, so STLink (or any other SWD-capable) dongle should work with it. It is not a 100% clone, though - there are some differences and gotchas.
 
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Offline ^_^

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Yup. For development you can go for JLink as well (fast memory readout for debug).
ST loader works perfectly even for the option bytes :) :D
 
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Offline Elasia

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anyone here buy their chips in a large run? if so how did they pan out?
 

Offline poorchava

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Actually GigaDevice are not that small. They're a part of consortium that have bought SSI, beating Cypress' bid.

Their STM clones actually have a separate flash die in the package and there is extra SRAM to cache the flash so that they can run at high speed.
I love the smell of FR4 in the morning!
 

Online JanJansen

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Maybe STM should copy them back.
My ±100€ lab : old scope, peaktech 6225a, aneng 8008
 

Offline blueskull

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Maybe STM should copy them back.

NXP already has similar 2 die MCUs, their early LPC ARM chips are.
SIGSEGV is inevitable if you try to talk more than you know. If I say gibberish, keep in mind that my license plate is SIGSEGV.
 

Offline ^_^

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Maybe STM should copy them back.

First GD should make a proper datasheet. The information density is a joke. One has to refer to ST's one, which is so funny!
 

Offline Elasia

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Maybe STM should copy them back.

First GD should make a proper datasheet. The information density is a joke. One has to refer to ST's one, which is so funny!

It actually would make sense that they were a former factory for ST that ST pulled out of hence the near identical clones and not much of their own doc work.. happens all the time on scale.. best factory wins and all the others get scraps, rossmann just did a recent video on ftc vs ice and mentions it as well.
 

Online JanJansen

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First GD should make a proper datasheet. The information density is a joke. One has to refer to ST's one, which is so funny!

The datasheet cost more efford to develop then the chip i am sure.
Those Chinese are very clever, only not so hard workers, more of the lazy kind.

It actually would make sense that they were a former factory for ST that ST pulled out of hence the near identical clones and not much of their own doc work.. happens all the time on scale.. best factory wins and all the others get scraps, rossmann just did a recent video on ftc vs ice and mentions it as well.

There you have it, they already have 1 quarter of the market to start with, and are taking over many more if we keep buying.
My ±100€ lab : old scope, peaktech 6225a, aneng 8008
 

Online coppice

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Maybe STM should copy them back.

First GD should make a proper datasheet. The information density is a joke. One has to refer to ST's one, which is so funny!
Use the Chinese documentation. Can't read Chinese? Then you're not really their target market.
 


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