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TPS65987DDJ: suggested flash memory

Part Number: TPS65987DDJ

Hello , i could use some help with understanding the suggested flash memory for TPS65987DDJ. 

Looking at the datasheet http://www.ti.com/lit/ds/symlink/tps65987ddj.pdf , there is a table (Table 21.) with flash memory part numbers.

In our product we would like to use the W25Q80JVSNIQ memory that is suggested. But the problem is that the flash can use dual or quad SPI,

in datasheet https://www.winbond.com/resource-files/w25q80jv%20spi%20revc%2008182016.pdf , there is a section on this.

As you can see, if the part number ends with "IQ" , the quad SPI pins are enabled. So the suggested flash W25Q80JVSNIQ is a quad SPI flash.

The problem starts when you look at the TPS65987DDJ datasheet and see that it only supports dual SPI. So the question is, where is the mistake ?

In TPS65987DDJ datasheet , that suggests the flash memory or in the W25Q80JV flash memory datasheet ?

  • Hi Eriks,

    Good catch. I would assume that the Winbound datasheet is correct for their device, but I believe that we verified the flashes with our device so it could be alright. Is there a specific reason why you chose this flash and not the MX25L8006 used on the EVM?

  • No reason at all, we just picked the first one from the list. "...we verified the flashes with our device so it could be alright." ,how would that work ?

    The pinout isnt compatible, if its supposed to share the flash. "The flash contains the Thunderbolt Controller firmware and the configuration data for the TPS65987DDJ."

    The only way i see is if you use quad SPI to set the status register (S9) bit for dual SPI operation on the flash memory and only then use it for TPS65987DDJ.

    Anyways, thanks for the response, we are going with a different flash, just wanted to understand/share this .