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Hot!PIC16F1829 supply voltage discrepancy

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Soumitrab
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2019/07/21 05:52:33 (permalink)
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PIC16F1829 supply voltage discrepancy

Hi
While programming the PIC16F1829, the PICKIT says the device is actually a PIC18LF1829 and programs with 3.3V. However the chip runs fine on 5V. 
I am a little confused which is the actual voltage for the chip ?

Thanks in advance for your inputs. 
#1

10 Replies Related Threads

    hexreader
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    Re: PIC16F1829 supply voltage discrepancy 2019/07/21 06:13:18 (permalink)
    +1 (1)
    What is written on top of the PIC?
     
    What voltages are acceptable according to the datasheet
     
    Which PICkit?   ... and is it a genuine one, or a clone?  EDIT:  withdrawn as irrelevant
     
    the device is actually a PIC18LF1829
    Are you sure?  I can find no reference to such a device :(
    post edited by hexreader - 2019/07/21 06:54:16

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    #2
    ric
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    Re: PIC16F1829 supply voltage discrepancy 2019/07/21 06:21:05 (permalink)
    +1 (1)
    Both the F and the LF versions can be programmed at 3.3V
    The LF part might run at 5V, but if it is an LF, then you are exceeding the manufacturer's maximum allowable voltage, so it could die prematurely.
     

    I also post at: PicForum
    Links to useful PIC information: http://picforum.ric323.co...opic.php?f=59&t=15
    NEW USERS: Posting images, links and code - workaround for restrictions.
    To get a useful answer, always state which PIC you are using!
    #3
    Soumitrab
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    Re: PIC16F1829 supply voltage discrepancy 2019/07/21 11:56:44 (permalink)
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    The Device is clearly marked as a PIC18F129 yet when i connect the Pickit and do a "Tools > Check communication", it shows up as a PIC18LF...
    Hence the quandry, which voltage should i go with ?

    Attached Image(s)

    #4
    PStechPaul
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    Re: PIC16F1829 supply voltage discrepancy 2019/07/21 13:06:10 (permalink)
    +1 (1)
    Soumitrab
    The Device is clearly marked as a PIC18F129 yet when i connect the Pickit and do a "Tools > Check communication", it shows up as a PIC18LF...
    Hence the quandry, which voltage should i go with ?


    You are making multiple typos. The screenshot clearly shows PIC16LF1829 and I would trust that - it might run on 5V but it may not do so very long, and various features may be compromised.
     


     
    #5
    ric
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    Re: PIC16F1829 supply voltage discrepancy 2019/07/21 13:22:55 (permalink)
    +1 (1)
    I don't think the PK2 ever officially supported the PIC16F1829.
    Are you using one of the later PK2 configuration files modified by third parties?
    Possibly it is misidentifyung your chip.
    The PK2 program does not display the actual ID word read, so we can't check it be hand.
     
     

    I also post at: PicForum
    Links to useful PIC information: http://picforum.ric323.co...opic.php?f=59&t=15
    NEW USERS: Posting images, links and code - workaround for restrictions.
    To get a useful answer, always state which PIC you are using!
    #6
    NorthGuy
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    Re: PIC16F1829 supply voltage discrepancy 2019/07/21 13:32:49 (permalink)
    +1 (1)
    I might be wrong, but I think PICkit2 had been already replaced with PICkit3 by the time PIC16F1829 was released. If this is correct then the device support files were added later by enthusiasts. Thus there may be some mishap with the device files.
    #7
    Soumitrab
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    Re: PIC16F1829 supply voltage discrepancy 2019/07/21 21:56:16 (permalink)
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    Here's the device which is marked as 16F1829 . I hope its clear enough as i cant do much of a macro photography with a phone camera.
    Yes i am using the Pickit2 with the later definitions ... so perhaps thats one of the reasons why this is being misreported as a 16LF1829 ?

    My Pickit3 (clone) works erratically so im assuming its on its last breath.


    post edited by Soumitrab - 2019/07/21 22:11:31

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    #8
    Soumitrab
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    Re: PIC16F1829 supply voltage discrepancy 2019/07/21 21:58:08 (permalink)
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    oh and my apologies for the typos (re: 18F/18LF) ... its 16F/16LF.
    Been working with 18F devices too long. Smile: Smile
    #9
    ric
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    Re: PIC16F1829 supply voltage discrepancy 2019/07/21 22:06:45 (permalink)
    +1 (1)
    Soumitrab
    ..
    Yes i am using the Pickit2 with the later definitions ... so perhaps thats one of the reasons why this is being misreported as a 16LF1829 ?

    Yes, I'd guess it is an error in the datafile.
     

    I also post at: PicForum
    Links to useful PIC information: http://picforum.ric323.co...opic.php?f=59&t=15
    NEW USERS: Posting images, links and code - workaround for restrictions.
    To get a useful answer, always state which PIC you are using!
    #10
    Soumitrab
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    Re: PIC16F1829 supply voltage discrepancy 2019/07/21 22:35:44 (permalink)
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    Thank you Ric and others. 
    #11
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