Hot!Alternative to SRAM or cheap SRAM

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Acelink2
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2017/10/06 16:27:49 (permalink)
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Alternative to SRAM or cheap SRAM

HI Guys, I see SRAM pricing has gone through the roof and I was wondering if anyone knows where to get cheap SRAM from?
Hi capacity but low cost. I'm after Parallel Sram and not Serial Sram. 
I know SDRAM is pretty cheap but my PIC23MZ doesn't have a SDRAM driver, so I will have to do the refresh in software and I really don't want to do that. 
So if you know of anywhere that has large capacity Parallel 3.3v SRAM please let me know.
 
Thanks guys, hope to hear from you soon.
Pete :)
 
#1

8 Replies Related Threads

    NKurzman
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    Re: Alternative to SRAM or cheap SRAM 2017/10/06 19:12:22 (permalink)
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    SDRAM for an LCC Graphic Driver?  Graphics controllers are cheaper.  If you need big RAM the Chips with Graphics controllers have a lot.
    #2
    andersm
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    Re: Alternative to SRAM or cheap SRAM 2017/10/06 21:30:25 (permalink)
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    Pseudo-SRAM/CellularRAM is available from a couple of manufacturers.
    #3
    jiggoly
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    Re: Alternative to SRAM or cheap SRAM 2017/10/07 03:28:52 (permalink)
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    Hi, Did you check the new PIC32MZxxxDA? For example PIC32MZ2064DAG176 has 176 pins 640k RAM and 32MB internal DDR plus integrated GPU.
    #4
    Acelink2
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    Re: Alternative to SRAM or cheap SRAM 2017/10/09 13:21:16 (permalink)
    4 (1)
    WOW !!!!! That's CRAZY !!! 640kSRAM and 32MB of DDR2 RAM onboard and at 200Mhz speed. LCD Controller as well. Up to 128MB external DDR2 RAM too. All I can say is WOW. My PIC32MZ runs at 252Mhz but 200Mhz should be fine. Thanks for the info, really appreciate it. 
     
    Thanks Microchip the PIC32MZ DA. Totally unbelievable !!! 
    Pete :) ( Super happy ) lol :)
    post edited by Acelink2 - 2017/10/09 13:38:54
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    NKurzman
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    Re: Alternative to SRAM or cheap SRAM 2017/10/09 15:18:30 (permalink)
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    Note that
    1. The Chip is only 70C
    2. There are limits to the support of the DDR in the Compiler.
    #6
    Acelink2
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    Re: Alternative to SRAM or cheap SRAM 2017/10/09 16:43:20 (permalink)
    3 (1)
    Thanks for that. I only need to read and write to the DDR. It should have auto refresh so I won't have to strobe that in software. I haven't read the datasheet yet but will be doing it today. Hopefully I won't run into any dramas :)
     
    Thanks mate :)
    Pete :)
     
    #7
    friesen
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    Re: Alternative to SRAM or cheap SRAM 2017/10/11 10:49:59 (permalink)
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    Also, DA doesn't have an FPU.
     
    DDR use by ethernet needs a workaround as well.  Other than that, 32mb is pretty handy.

    Erik Friesen
    #8
    Acelink2
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    Re: Alternative to SRAM or cheap SRAM 2017/10/11 15:15:09 (permalink)
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    Thanks for the info. I won't be needing the ethernet for this project so all good there.
    Thanks Erik :) and have a great day. :)
    Pete :)
     
     
    #9
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