[sdiy] New SPI SRAM

[KD KD]

The H7 devices? Are there issues with later F4's? I was just about to switch
from SPI to Quad for a F446.  Octa SPI on its way..

2018-07-15 23:44 GMT+02:00, Eric Brombaugh <ebrombaugh1 at cox.net>:
> I started seeing references to QSPI PSRAMs in some of the embedded
> development forums last year. At that time they were all coming out of
> obscure fabless outfits in China who were keeping the data sheets under
> NDA and not selling to anyone that wasn't in their treehouse. Nice to
> see a big player like ISSI doing this - most of the STM32 that I'm using
> now have solid QSPI ports and even allow memory mapping so it's
> conceivable that dropping one of these little 8-pin parts in could
> really open up the storage options.
>
> Would be even nicer if you could get them at the big distributors...
>
> Eric
>
> On 07/15/2018 01:44 PM, Richie Burnett wrote:
>> ISSI website is showing an interesting new half-Megabyte 8-pin serial
>> (SPI) Static RAM chip that might be of interest for audio processing:
>>
>> http://www.issi.com/WW/pdf/IS62-65WVS5128GALL-BLL.pdf
>>
>> I've had Microchip's 23LC1024 (128 Kilobyte SPI SRAM) working with dsPIC
>> using SPI via DMA,  so have requested a few samples of the ISSI part to
>> try it out.
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