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F28075 Questions

Todd Anderson78572
Guru 14640 points

All:

It definitely appears that the F28075 part is a great part! 

A few questions:

1. When enabling flash pipelining, does the flash run at the effective 120 MIPs speed (similar to F28069)?

2. There are some places that state it is a single 3.3 volt part, but others that say that 3.3v and 1.2v are needed (because internal voltage regulator was not yet working?)

3. I have seen one 1K unit pricing as low as $8.41 (28074) and another place where it is ~$10. Which is correct?

4. It definitely looks like one can migrate from an existing F28335 design to the F2807x with minimal problems...

    a. External oscillator (30 MHz) may not be needed if internal can be used. Is CAN the only situation where an external oscillator is required?

    b. Obviously there are changes in ADC12, but it looks like the F2807x may have a "better" ADC than previous parts?

    c. Are there any other major changes to be aware of? (For instance, EMIF?, Comm changes?)

5. When do you expect volume production? (Is the F28075 at TMS or TMX or does that even make sense anymore?)

  • 0
    TI__Intellectual 1910 points

    Hi Todd,

     

    Please see some answers to your questions:

    1. The flash on the F2807x is 50MHz which is faster than the flash on the F28069 so 120MHz will require 3 waitstates

    2. An external power supply must be used to supply 3.3V to VDDIO and 1.2V to VDD

    3. We will no longer be offering the F28074 configuration so you can expect the 1Ku to start at $9.26 for the the F28075 version

    4. There are some changes to the structure of the registers but all C28x based MCUs are code compatible

    a. The F28335 has higher throughput and can use interal reference but the AC specs such as SNR, THD, SFDR are similar to the F28075.  Accuracy specs like gain/offset are better on the F28075

    b. The EMIF has changed from XINTF to a true EMIF.  There are also many comm peripheral additions such as comparators, delta sigma sinc filters, USB, etc

    5. Volume production is scheduled for end of 4Q15

    Loretta