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Tool/software:
TM4C team,
Our customer is connecting a Serial SRAM device externally. Part number:
IS62WVS2568GBLL
https://www.issi.com/WW/pdf/IS62-65WVS2568GALL-BLL.pdf
They would like to operate in the Serial Quad Interface (SQI) described on page 12 of the SRAM datasheet. It looks like we support this mode of operation for a flash device, shown in our referenced design.
Do we have a driver for interfacing with the SRAM in SQI? Or example software of any kind?
What clock rate is supported in this mode?
Thanks,
Darren
Hi Darren,
There is no specific example for interfacing with the ISI serial SRAM memory. However, in the TivaWare SDK we have a generic Quad-SPI mode example that can be found at C:\ti\TivaWare_C_Series-2.2.0.295\examples\boards\ek-tm4c1294xl\ssi_quad_mode.
Reading the ISI datasheet, accessing serial SRAM should be straight forward. See below figure for a simple byte read operation. Give the READ command (0x03) followed by the 24-bit address and then read the data. I don't think you need a special driver for it.
