[sdiy] New SPI SRAM

Eric Brombaugh ebrombaugh1 at cox.net
Sun Jul 15 23:44:37 CEST 2018

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...


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.

More information about the Synth-diy mailing list