Russian Mega128 clone

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Today, there was someone asking here for a Russian transistor equivalent. So it occurred to me, "hey, there are Chinese AVR clones, so maybe there are Russian clones also?"

 

So I went searching, and indeed I found this manufacturer catalogue: http://niiet.ru/wp-content/uploa...

There are clones of many things, but in particular, a clone of the Mega128, called 1887ВЕ7Т of which I also found the datasheet: http://caxapa.ru/parts/files/nHs...

 

Unlike the Chinese AVRs from Logic Green, this one seems to be an exact and shameless copy of the Mega128. I wonder if all cheap mega128s you can find on Ebay and AliExpress are actually ripoffs like this?

 

From the datasheet pag. 465 it seems to have a feature/known bug, that is, the bootloader flash section has pages of 32 word size, instead of the normal 128 words. This might cause problems programming this section using the settings for the Mega128.

 

From the datasheet prologue:

 

At the present time, one of the main factors ensuring the competitiveness of Russian radio electronic equipment and its survivability is the use of an import-independent information base for its development and production. Import substitution of electronic components is most effective when full functional analogs of the microelectronics product are used.
This (document) can serve as a practical guide for the use of microcontrollers for developers of systems based on IC 1887VE7T.

 

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A functional copy is very different from a silicon copy.

There have been VHDL equivalents of AVR (and many other) processors available via opencores for quite some years now.

Nowadays there are probably tools availabe to turn VHDL directly into masks for making semiconductors.

And plenty of Fab's  who will do that gladly for you in exchange for some money.

Which means anybody with a bit of cash can get their hands on AVR's which are not from Atmel/Microchip.

 

Having a quich peek at:

https://opencores.org/project,av...

my eye fell on the name "Ruslan Lepetenok".

That does have a russian ring to it.

I'll leave it up to you to speculate over the chicken & egg thingie.

Doing magic with a USD 7 Logic Analyser: https://www.avrfreaks.net/comment/2421756#comment-2421756

Bunch of old projects with AVR's: http://www.hoevendesign.com

Last Edited: Thu. Jan 11, 2018 - 02:33 PM
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https://opencores.org/project,avr_core is more recent though in Verilog instead of VHDL.

via https://github.com/GadgetFactory/Arduino-Soft-Core (in VHDL)

and

Gadget Factory

Arduino Core

http://www.papilio.cc/index.php?n=Papilio.ArduinoCore

The Arduino Soft Core is the combination of the AVR8 Soft Processor and the Arduino IDE modified to run on the Papilio. This combination opens up the very large library of Arduino sketches for use with the Papilio.

...

 

"Dare to be naïve." - Buckminster Fuller

Last Edited: Thu. Jan 11, 2018 - 05:58 PM
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It was not my intention to give an extensive overview of the "best" / "newest" AVR core.

I do not have expertise in that art.

It was merely my intention to share one of my old/vague memories as a possible source for the russian chips.

 

Searching for "avr core" on github gives ... too much results.

But apparently VHDL is one of the modifiers on github to limit the "languages" to search in.

There are still 6 projects on github alone left:

https://github.com/search?l=VHDL...

 

GadgetFactory is not among those 6...

Doing magic with a USD 7 Logic Analyser: https://www.avrfreaks.net/comment/2421756#comment-2421756

Bunch of old projects with AVR's: http://www.hoevendesign.com