Hi!
What is the compliance current that should flo...
# reramz
Zsolt Grodvalt
03/01/2025, 6:54 PMHi!
What is the compliance current that should flow through a ReRAM after successful FORMing (for a measurement voltage of 0.2V)? The technology specs only say that
2.6-3.1V should be applied with steps of 0.1V, and I don't know at what
resistance I should stop. Also simulation shows that 36mA flows through
it for the largest pulse, which is way too high. (I know that the forming process is not incorporated in the model...)
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Leo Moser
03/01/2025, 7:16 PMHi, I would kindly ask you to move your question to FOSSi Chat, as all information in this Slack will inevitable be lost.
https://fossi-chat.org
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Akash Levy
03/02/2025, 12:25 PMI usually have set a compliance current of 1-2 mA when dealing with raw RRAM. In practice, this can sometimes work, but sometimes you can "over-FORM" the device, which makes it hard to RESET.
In practice, you usually use a 1T1R structure and use the word line voltage of the 1T to set an effective compliance current
Akash Levy
03/02/2025, 12:30 PMAlso you typically stop the FORMing process once the filament forms, so if you blindly apply the stepping process, you will get very large currents (as you see in your simulation) and find it difficult to RESET. But you should also remember that this model does not take into account FORMing or the complete filamentary dynamics of the real device, so it should be used as a rough model, not as an expectation of what you'd see in real life
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Zsolt Grodvalt
03/02/2025, 5:01 PMThank you!
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samarth jain
05/01/2025, 9:19 AM@Leo Moser do we have a group for rram at fossi
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Leo Moser
05/02/2025, 6:05 AMYes, there is "#C02Q2DE33QF:fossi-chat.org".
You can browse the public rooms in FOSSi Chat.
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