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Memory chip

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lord8055

lord8055

Student
Sep 30, 2020
28
Flash microcircuits (ROM memory).
Their total memory capacity is 1800 gigabytes

Write / read speed 2GB /sec

please can someone suggest me new memory chips for the given data above, I have been trying to analyze and search , but I cannot .
The task i have is to develop a protected memory module, which is an integral part of the "black box",flight data recorder . It provides - continuous recording of information; saves recorded data REGARDLESS OF POWER SUPPLY

Retains recorded information in the event of a flight accident
please can someone suggest me new memory chips for the given data above
 
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Good luck with that... 2GB/s is an extreme speed (Class 10 Flash cards get around the ~100MB/s range, and some of the really fast stuff is in the ~250MB/s area), not to mention the temp requirements expected for a black box.

My guess is it will be a complete custom design with a mix of high speed dataloggers with RAM and multi-chip Flash in parallel to store the data in time, with a detailed CRC scheme to ensure nothing goes wrong.

Dan - Owner
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I could work my way to a solution over a month or so of systems-level work, with a decent splash of chip-level search involved... it won't be an easy design as you're not going to find a single-chip solution, but it's doable.

Dan - Owner
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you’ll need a microcontroller , Flash ROM with parallel connection to the muc, serial port interface with main onboard aircraft system to receive data TAHT has to be stored on the memory chip, timer and interrupt set up. My teacher told me , it has to been done on paper any not practically make it . So it is possible you can make a layout showing how it can be done?
 
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We provide assistance and advice.
We don't do homework.

Bill
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Ohm's law
Not just a good idea;
It's the LAW!
 
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What do you mean by converting the sentence into circuit ? The issue is , I don’t know how to do that , can you please show me the layout so I can practical start working on the project
 
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If you're unable to figure out what's needed after what I said, you need more help than can be offered within the confines of this forum. We don't do homework for you, we only help guide. Time to have a deeper discussion with your teacher.

Dan - Owner
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I think you need to back up a second, or two; typical digital flight data recorders record upwards of 25 hours of flight data. That means for an 1800 GB store, it's only about 20 MB/s data rate

TTFN (ta ta for now)
I can do absolutely anything. I'm an expert! faq731-376 forum1529 Entire Forum list
 
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can you explain how did you get 20MS/s , but the deal here is i have been given the data and format it according to it .
data given :
Flash microcircuits (ROM memory).
Data rewrite cycle time - 15 min
Write / read speed - 2GB /sec
i solved from this and their total memory capacity is 1800 gigabytes
• 15 min and 2Gb/s

• 15 min = 900 sec

• 2 Gb/s x 900 sec = 1 800 Gb

like we are using similar concept of black box , not the actually box , so i have to design similar storage box with the above data , so i was told SSD drive is fine , but i have to design from scratch and i cannot understand what type of Flash memory to use , i searched the online microchip stores and manufactures pages , but i was not successful in find the flash memory type ( model / part number) and which micro controller to use also.
can you please guide and suggest me what flash memory to use , any specific model or part number so i can design a 2 tb storage memory module

 
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As I mentioned earlier, you will not find a single chip that allows for a 2GB/s write speed. You will need to construct a multi-chip, parallel system that has appropriate buffering and bus speed, along with some form of CRC error correction. This is not a trivial problem.

IRstuff made an assumption of data retention length since you didn't specify in your original problem statement. You're also mixing notation, one minute saying 2 GB/s and the next 2 Gb/s... this matters as the former is 8x the data as the latter.

If this is the assignment handed to you by your professor, you're either over-thinking the level of design they wish you to put together, or this is a semester-long project that requires detailed work. In either case, there's little more help we can provide through this fora.

Dan - Owner
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YEs sorry read/write speed is 2Gb/s miss typing mistake, its 2 Gb/s
few links showing non volatile Nand flash memory

so i can use that with a microcontroller , Flash ROM (here link ) with parallel connection to the muc, serial port interface with main onboard aircraft system to receive data TAHT has to be stored on the memory chip, timer and interrupt set up. My teacher told me , it has to been done on paper any not practically make it . So it is possible ?
 
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You keep asking us if it's possible... only YOU can answer that as it's YOUR homework, not ours.

One last time, though... I doubt you are going to get 2 Gb/s write speed out of a single chip.

Dan - Owner
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can you atleast recommend some few chips or combination of chips which can help me making a 2gb/s
 
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Use the chips you already found... but you have to use several in parallel and interleave the data between them. You're going to need a fast processor to handle that interleaving.

The rest is what you need to figure out by yourself... any help beyond that and we're doing the project for you.

Dan - Owner
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use several in parallel and interleave the data between them means what
 
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