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Electronics => FPGA => Topic started by: DiTBho on June 27, 2022, 01:54:43 pm

Title: I need a small fpga with 2-4MB of RAM and nothing else
Post by: DiTBho on June 27, 2022, 01:54:43 pm

hi
I need a small board with an FPGA (I prefer Xilinx) with just SDRAM or something simpler than DRAM.
I don't want to use a IP-core to manage the ram, and I need to address up to 2 or 4Mbyte.

I don't need other gadgets on the board, I don't want e.g. 7segments LCDs, buttons, .. etc. Just soldered ram and a header with pins!

Is there anything that I can buy? I don't have the skill and the equipment to design and make one myself  :-//

Title: Re: I need a small fpga with 2-4MB of RAM and nothing else
Post by: Foxxz on June 27, 2022, 03:49:47 pm

This is a rebranded MOJO board
https://www.amazon.com/dp/B07P39F1V6/ (https://www.amazon.com/dp/B07P39F1V6/)

Here is a chunk of SDRAM
https://www.amazon.com/Mister-Manual-Welding-Computer-Accessories/dp/B08RN5YCGG/ (https://www.amazon.com/Mister-Manual-Welding-Computer-Accessories/dp/B08RN5YCGG/)

Heres the board info for the SDRAM
https://boogermann.github.io/Bible_MiSTer/hardware/assembly/sdram-board-assembly/ (https://boogermann.github.io/Bible_MiSTer/hardware/assembly/sdram-board-assembly/)

Title: Re: I need a small fpga with 2-4MB of RAM and nothing else
Post by: langwadt on June 27, 2022, 03:58:22 pm

https://www.ebay.com/itm/124439000584 (https://www.ebay.com/itm/124439000584)

Title: Re: I need a small fpga with 2-4MB of RAM and nothing else
Post by: SiliconWizard on June 27, 2022, 05:49:01 pm

I can also mention boards that I talked about a while ago, with Lattice ECP5 FPGAs (they are actually FPGA boards made for light controllers, that some company made dev base boards for). Relatively cheap and work well. They have 8 MBytes SDRAM (32-bit data bus, which is not bad). They also embed 2 Ethernet PHYs (but not the connectors, but normally all you'll need is MAGJACKs if you wanna implement Ethernet), just one user LED and many IOs. I have two of them, one with a ECP5-25 and one with a ECP5-45.

https://www.aliexpress.com/item/1005001686186007.html (https://www.aliexpress.com/item/1005001686186007.html)

Title: Re: I need a small fpga with 2-4MB of RAM and nothing else
Post by: Canis Dirus Leidy on June 28, 2022, 07:06:27 am

Chinese board with Spartan-6 (XC6SLX16) and MT48LC16M16A2 SDRAM chip: https://aliexpress.com/item/32801899786.html

Title: Re: I need a small fpga with 2-4MB of RAM and nothing else
Post by: jevinskie on June 28, 2022, 04:27:25 pm

Not Xilinx but the Gowin parts can come with built in PSRAM or SDRAM. The Sipeed Tang Nano 4k/9k are under $20 and have 8 Mbyte of PSRAM on chip.