How can I purchase versions with larger SDRAM and Flash?
Possibly, look online? Versions of what?
Versions of the H7 per the datasheet
SDRAM 0-None 1 - 8Mbyte... 4 - 64MByte
FLASH. 0-None ... 8 - 128 MByte
Thanks for your quick response. Any idea what number equates to “volumes”?
Honestly, I have no idea what Arduino would call a "volume order". If I have to guess, maybe a 100+...
It's not likely that "customization" includes memory allocations. The wise folks at ST have already anticipated the need for different memory sizes, and offer different versions with different SRAM and Flash size.
Go to a distributor and order the part number that has the memory allocation you need. You can obtain the relevant part number from the "product selector" tab on the STM product page for the H7.
I would expect those part numbers to be in the data sheet as well. Look for the part number matrix.
You didn't say which H7, either... there are quite a few variations.
Hi,
I am aware of only one H7 version. I would be glad to know of others (I am aware of the lite version). I certainly could order an ST processor with more memory. I have designed over 20 products with ST processors so I am aware of the versions. Are you suggesting I de-solder the ST processor on the H7 and replace it with another one with larger memory? I was hoping to avoid that.
Oh, you mean the Portenta product. Well, you left that part out, you only referred to the "H7" which is an ST product not an Arduino product. Good sleuthing work by @hzrnbgy did lead to an understanding, but it went over my head.
Have you tried just contacting Arduino LLC and asking about a custom order? With chip placement, the machines have to be set up, but if the packages are the same, it's just a change of reel on the placement machine. If you think about the ramifications of that, changing the reel and then running boards through it, you can imagine that small quantities will reflect that setup cost in the order.
The other way, tell us about your problem with memory and see if we can help. Frequently, forum members have contributed various methods of memory reduction that allowed some project to work within the given memory limitations.
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