DRA829V: What's the use case for the HyperFlash/HyperRAM on the DRA829V SOM board?

Brad Caldwell

Part Number: DRA829V
Other Parts Discussed in Thread: DRA829

Hi,

This question came up and I'm trying to understand it better. The DRA829V SOM board has a Cypress HyperFlash/HyperRAM combo (multi-die) device on it, each on it's own CS#. The schematic shows it as U25 S71KS512SC0. I visually checked and there is a device soldered on there. I read in the Linux SDK release notes that HyperRAM is not supported in Linux. My question is, what's the use case of having both HyperFlash and HyperRAM? Is this primarily intended for MCU use?

Thanks

over 2 years ago

0 Karan Saxena over 2 years ago

TI__Guru* 75212 points

Hi Brad,

As per errata i2119 in https://www.ti.com/lit/pdf/sprz455 the Hyperbus in not function on the DRA829.

Quoting the datasheet (https://www.cypress.com/file/322936/download ) : "For systems needing both Flash and self-refresh DRAM, the HyperBus products family includes MCP devices that combine HyperFlash and HyperRAM in a single package."

Let me know if you need more information on this.

Regards,

Karan

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DRA829V: What's the use case for the HyperFlash/HyperRAM on the DRA829V SOM board?