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Thread: Teensy 3 Upgrade

  1. #1
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    Teensy 3 Upgrade

    I have been reading through the data sheets at Freescale and I was wondering. Could we remove the MK20DX128VLH5 and put the Mk20DX256VLH7 in its place?
    According to the fact sheet the 256VLH7 has double the flash and 4 times the sram. The footprints are the same and the pin layout is the same other then the 256VLH7 having more functions on a few pins.
    Has anyone else considered this? Would there be any glaring downsides to upgrading the uChip? Other then a cost increase?

    Thoughts, comments, beat-downs welcome

    Fact sheet for K20 series
    http://cache.freescale.com/files/mic...YFS.pdf?fpsp=1

    MK20DX128VLH5 spec sheet
    http://cache.freescale.com/files/32b...SF0.pdf?fpsp=1

    MK20DX256VLH7 spec sheet
    http://cache.freescale.com/files/32b...SF1.pdf?fpsp=1

  2. #2
    Senior Member Constantin's Avatar
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    Perhaps we're looking at the Teensy 3++ right there.... tasty! Between the dual 16bit SAR ADCs (yeah, OK, maybe only 13 IRL, but still!) AND a built in PGA... yum yum.

  3. #3
    Senior Member PaulStoffregen's Avatar
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    Actually, Teensy++ 3.0 is planned with an even more capable, soon-to-be-released chip. All the info I have is under NDA, so I can't discuss the technical details until Freescale publishes the datasheet on their website.

  4. #4
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    How about a Teensy+ 3.0 to tide us over till then?
    So when is Christmas?
    Last edited by Donziboy2; 03-25-2013 at 09:30 PM.

  5. #5
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    Will it be in the same form factor?

  6. #6
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    Thats a good question and one of the reasons I looked for a drop in replacement for the current uController in the Teensy 3.0.

  7. #7
    Senior Member PaulStoffregen's Avatar
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    I'm sorry, I can't discuss T++3 technical details yet.

  8. #8
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    As long as its not the edible one I keep seeing
    http://www.wired.com/design/2013/02/...tiny-arm-chip/

  9. #9
    While it should be possible for you to buy a teensy3 and rework the board with a 256VLH7 instead, I think asking Paul to do it for you is a bit much. I think he has enough on his plate without him building custom hardware for people as well.

  10. #10
    Senior Member PaulStoffregen's Avatar
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    The MK20DX256 has a different flash page size.

  11. #11
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    Qumefox, I asked if it was possible. I don't recall asking anyone to do it for me.

    And if Paul says there is something in the works already I can wait. My current project will take at-least 6 months to plan and build.

  12. #12
    Senior Member Constantin's Avatar
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    Look forward to the Teensy 3++ whenever it comes out. No need for details, all I need to know is that you're behind it as that guarantees technical excellence and follow-on support. Best of luck with that and all the other aspects of the Teensy 3 evolution.

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