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BF516F gone obsolete!!!

Hi,

I've received a peculiar letter from analog devices stating that the internal flash vendor for the BF51xF has discontinued the 4Mbit flash used in these products. Therefore the BF516F has become obsolete and its PPP replacement is BF518F.

Another change is that the new flash used is 3.3V.

This is very alarming as I am using the BF516F with 1.8[V] Vddio and VddFlash in several of my products!!! Furthermore I have already coded my own flash driver for the purpose of implementing a boot-loader capable of uploading new software via Ethernet.

Is there any place I can find exact specifications of the required design changes, how to work with the new flash, new flash driver etc?

In the official product site there is no mention of this change, and the product status is stated as "in production"

Help!!!!!!

Parents
  • We only provide guidance in the datasheet, as the only change required is to change the VDDFLASH supply to be in the 3.0V nominal range rather than the previous 1.8V range.  Figure 4 of the datasheet shows you how the flash is hooked up internally, and you can see two notes there that hopefully clear this up a bit.  The note at the top indicates that the "Signals between the processor and the flash operate at the VDDFLASH voltage level", and the note to the right provides the equivalent information for the external SPI0 signals: "SPI0 signals external to the processor operate at the VDDEXT voltage level".

    I hope this clarifies things...

    -Joe

Reply
  • We only provide guidance in the datasheet, as the only change required is to change the VDDFLASH supply to be in the 3.0V nominal range rather than the previous 1.8V range.  Figure 4 of the datasheet shows you how the flash is hooked up internally, and you can see two notes there that hopefully clear this up a bit.  The note at the top indicates that the "Signals between the processor and the flash operate at the VDDFLASH voltage level", and the note to the right provides the equivalent information for the external SPI0 signals: "SPI0 signals external to the processor operate at the VDDEXT voltage level".

    I hope this clarifies things...

    -Joe

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