1. Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
    Dismiss Notice

Pickit 2 VPP Voltage Level error

Discussion in 'Microcontrollers' started by nachum, Feb 17, 2010.

  1. nachum

    nachum New Member

    Joined:
    Jan 27, 2010
    Messages:
    24
    Likes:
    0
    Hi
    I bought a MINI KIT2 for programming. But when I try to program I get a message on the voltage level on VPP is lower than that message "Pickit 2 VPP Voltage Level error. Check target and retry operation." . Any idea what could be done to resolve the problem.
    I checked with a FLUKE the VPP showed me just 1+- volt.

    Attached pictures of programmer And the development board kit.

    Thank you for your help
     

    Attached Files:

  2. Wp100

    Wp100 Active Member

    Joined:
    Feb 3, 2009
    Messages:
    969
    Likes:
    45
    Location:
    England
    Hi,

    Not familiar with that dev board, but it looks like a far east Pickit2 clone.

    I would first prove that the Mini Kit2 was working ok by simply putting your 16F chip in a breadboard etc and connecting short 5 wires to the programmer and first see if it can recognise the chip and then program.

    The results of that should show what the next step is.
     
  3. nachum

    nachum New Member

    Joined:
    Jan 27, 2010
    Messages:
    24
    Likes:
    0
    Thanks for the answer.
    What connections should I do ?
    i work whit pic16f877a
     
  4. dave

    Dave New Member

    Joined:
    Jan 12, 1997
    Messages:
    -
    Likes:
    0


     
  5. blueroomelectronics

    blueroomelectronics Well-Known Member

    Joined:
    Jan 21, 2007
    Messages:
    12,536
    Likes:
    170
    Location:
    Toronto, Canada

    The PICKit2 software has self test modes. Quite useful.
     
  6. Wp100

    Wp100 Active Member

    Joined:
    Feb 3, 2009
    Messages:
    969
    Likes:
    45
    Location:
    England
    Hi,

    You should connect the two -

    16F877a.......................Pickit2

    pin 1 VPP .......................1
    pin 32 & 11 + Vss ......... 2
    pin 31 & 12 - Gnd ..........3
    pin 40 Data.....................4
    pin 39 Clock ...................5

    kit2 pin 6 not used , see the Microchip Pickit2 Help - User Manual for helpful info and trouble shooting is this does not work.
     
  7. nachum

    nachum New Member

    Joined:
    Jan 27, 2010
    Messages:
    24
    Likes:
    0
    Hi
    I connected the micro to the PICKIT 2.
    Like you said
    pin 1 VPP .......................1
    pin 32 & 11 + Vss ......... 2
    pin 31 & 12 - Gnd ..........3
    pin 40 Data.....................4
    pin 39 Clock ...................5
    I check with PICkit 2 v2.61 and i Received "Pickit 2 VPP Voltage Level error. Check target and retry operation"
     
  8. Wp100

    Wp100 Active Member

    Joined:
    Feb 3, 2009
    Messages:
    969
    Likes:
    45
    Location:
    England
    Hi,

    Just need to establish some facts.

    The 16F877, did that come preprogrammed with some sample led flashing progam for the dev board, if so, did it work on the dev board OK ? - Does it still work on the dev board ok ?

    Your first attempt to program was with the 16F in the dev board zip socket and the minkkit2 plugged into the dev board ?

    The attempt you have just done was in a breadboard with nothing else connected to the 16F and the wires between the two not longer that 150mm / 6" ?

    Do you have any other pic chips to hand ?
     
  9. be80be

    be80be Well-Known Member

    Joined:
    Aug 23, 2008
    Messages:
    4,869
    Likes:
    144
    Location:
    morristown,tn
    Test the pickit2 with it's software it has tools to test the programmer with like Bill said. If all good with your pickit2 then make sure you don't have Vpp
    pulled low it should be pulled to Vdd with a 10k resistor
     
    Last edited: Feb 17, 2010
  10. nachum

    nachum New Member

    Joined:
    Jan 27, 2010
    Messages:
    24
    Likes:
    0
    I bought a development kit + programmer (PICKIT2).
    Right now I could not do anything.
    I always get an error message on the problem of voltage VPP.
    I downloaded the software that checks voltage programmer. And there I get no voltage on VPP.
    There could be a problem with the programmer or I did not connect properly??
     

    Attached Files:

  11. Vizier87

    Vizier87 Active Member

    Joined:
    May 12, 2009
    Messages:
    1,495
    Likes:
    12
    Location:
    Johor Bahru, Malaysia
    You're sure? That is the problem then, USB output for Vpp to GND is around 5V. Check that from the USB output of your PC (it is USB connected ain't it?) according to this:
    [​IMG]

    Figure out the problem from that point, USB ain't gonna be the problem, probably some short-circuit problems you overlooked.
     
    Last edited: Feb 17, 2010
  12. nachum

    nachum New Member

    Joined:
    Jan 27, 2010
    Messages:
    24
    Likes:
    0
    USB properly. the VDD shows 5v.
    But when I try to Check Communication i get an error message on VPP.
    I attached pictures.
     

    Attached Files:

  13. Wp100

    Wp100 Active Member

    Joined:
    Feb 3, 2009
    Messages:
    969
    Likes:
    45
    Location:
    England
    Hi,

    If your last Vpp test was done with nothing connected to your Mini Kit2, and the Vdd looks ok, then it would seem you have a faulty unit and it needs returning to your supplier.
    Is it a far east mail order unit ?

    Internally they are smd devices and little you can do to them.

    The reason I asked earlier about if you had run any demo on the dev board was to try and establish if that board was also ok, particularly the connections to pin1 the Mclre / Vpp pin.
     
  14. nachum

    nachum New Member

    Joined:
    Jan 27, 2010
    Messages:
    24
    Likes:
    0
    I checked the PICKIT 2 even without the development kit also received an error message on the VPP
    I bought the programmer in China
    If I did not connect the pic16f877a to PICKIT 2 Which result I should get When I check the VPP ??
     
  15. Wp100

    Wp100 Active Member

    Joined:
    Feb 3, 2009
    Messages:
    969
    Likes:
    45
    Location:
    England
    Hi,

    The Troubleshooting via the Pickit2 program must be intially done, as the opening screen states, with nothing connected to it other than your test meter wires.

    So with the Minikit2 plugged into the usb lead and the output connector totally empty, connect your meter + lead to Vpp pin 1 and your meter - lead to pin 3 - your meter should be set to the dc volts range.

    Do you get anything near 12v being shown ?

    Also try the +5v Vdd again.
     
  16. nachum

    nachum New Member

    Joined:
    Jan 27, 2010
    Messages:
    24
    Likes:
    0
    I do not see any change in VPP When I checking with FLUKE.
    vdd=5v
    vpp=0v
     
  17. Wp100

    Wp100 Active Member

    Joined:
    Feb 3, 2009
    Messages:
    969
    Likes:
    45
    Location:
    England
    Hi,

    Well even if you test it without the Fluke connected it should still show 12v on the diagnostic screen - looks like you have been unlucky and got a duff one.

    Back to the suppliers then...
     

    Attached Files:

  18. colin55

    colin55 Well-Known Member

    Joined:
    Feb 14, 2009
    Messages:
    3,534
    Likes:
    82
    Location:
    Melbourne Australia
    Vpp will not appear if a chip is not recognised by the programmer and will not appear until the actual time of "burning."
     
  19. nachum

    nachum New Member

    Joined:
    Jan 27, 2010
    Messages:
    24
    Likes:
    0
    Hi

    How do I see 11+ volts? the USB is 5 volts.
    I get an error vpp
     

    Attached Files:

  20. nachum

    nachum New Member

    Joined:
    Jan 27, 2010
    Messages:
    24
    Likes:
    0
    I tried to burn and i receive notification problem on VPP.
    So I installed the software PICkit 2 v2.61 and saw that PICKIT 2 volts on VPP.
     
  21. nachum

    nachum New Member

    Joined:
    Jan 27, 2010
    Messages:
    24
    Likes:
    0
    Could be that the PICKIT not know to program the PIC16F877??
    link ---http://cgi.ebay.com/DIY-PICKIT-2-PICKIT2-Microchip-PIC-Programmer-Debugger_W0QQitemZ390148784464QQcmdZViewItemQQptZBI_Electrical_Equipment_Tools?hash=item5ad6ae0150


    Current PICkit 2 Programming Support (Mar 2007) Bold font indicates new parts supported in Application v2.20 and device file v1.20
    PICkit 2 MPLAB 7.51 & 7.52 Support

    Debugging & Programming
    PIC12F683*
    PIC16F684*, 685*, 687*, 688*, 689*, 690*
    PIC16F883, 884, 886, 887
    PIC16F913, 914, 916, 917, 946
    These devices require an ICD header board to enable debugging with them Programming only
    PIC12F508, 509, 510
    PIC12F675
    PIC16F505, 506
    For the most current MPLAB support information, see Readme for PICkit 2 in the “Readmes” subdirectory of “MPLAB IDE.”
    (Typically C:\Program Files\Microchip\MPLAB IDE\Readmes)
    Notice: (please read this carefully for some often asked questions)


    1 Device Support List (For reference only) (IDE 7.62, for latest version please check your readme file)
    1.1 Debugger - Full Support
    PIC16F690*
    PIC16F884
    PIC16F887

    PIC16F883
    PIC16F886
    PIC16F917


    1.2 Debugger - Beta Support
    PIC12F629*



    PIC12F635*



    PIC12F675*



    PIC12F683*







    PIC16F627A*
    PIC16F737
    PIC16F874A

    PIC16F628A*
    PIC16F747
    PIC16F876

    PIC16F630*
    PIC16F767
    PIC16F876A

    PIC16F631*
    PIC16F777
    PIC16F877

    PIC16F636*
    PIC16F785*
    PIC16F877A

    PIC16F648A*
    PIC16F818
    PIC16F88

    PIC16F676*
    PIC16F819
    PIC16F882

    PIC16F677*
    PIC16F87
    PIC16F913

    PIC16F684*
    PIC16F870
    PIC16F914

    PIC16F685*
    PIC16F871
    PIC16F916

    PIC16F687*
    PIC16F872
    PIC16F946

    PIC16F688*
    PIC16F873
    PIC16HV785*

    PIC16F689*
    PIC16F873A


    PIC16F716*
    PIC16F874






    PIC18F1220
    PIC18F2682
    PIC18F6310

    PIC18F1230+
    PIC18F2685
    PIC18F6390

    PIC18F1320
    PIC18F4220
    PIC18F6410

    PIC18F1330+
    PIC18F4221
    PIC18F6490

    PIC18F2220
    PIC18F4320
    PIC18F6520

    PIC18F2221
    PIC18F4321
    PIC18F6525

    PIC18F2320
    PIC18F4331
    PIC18F6527

    PIC18F2321
    PIC18F4410
    PIC18F6585

    PIC18F2331
    PIC18F442
    PIC18F6620

    PIC18F2410
    PIC18F4420
    PIC18F6621

    PIC18F242
    PIC18F4423
    PIC18F6622

    PIC18F2420
    PIC18F4431
    PIC18F6627

    PIC18F2423
    PIC18F4450
    PIC18F6628

    PIC18F2431
    PIC18F4455
    PIC18F6680

    PIC18F2450
    PIC18F4458
    PIC18F6720

    PIC18F2455
    PIC18F448
    PIC18F6722

    PIC18F2458
    PIC18F4480
    PIC18F6723

    PIC18F248
    PIC18F4510
    PIC18F8310

    PIC18F2480
    PIC18F4515
    PIC18F8390

    PIC18F2510
    PIC18F452
    PIC18F8410

    PIC18F2515
    PIC18F4520
    PIC18F8490

    PIC18F252
    PIC18F4523
    PIC18F8520

    PIC18F2520
    PIC18F4525
    PIC18F8525

    PIC18F2523
    PIC18F4550
    PIC18F8527

    PIC18F2525
    PIC18F4553
    PIC18F8585

    PIC18F2550
    PIC18F458
    PIC18F8620

    PIC18F2553
    PIC18F4580
    PIC18F8621

    PIC18F258
    PIC18F4585
    PIC18F8622

    PIC18F2580
    PIC18F45K20
    PIC18F8627

    PIC18F2585
    PIC18F4610
    PIC18F8628

    PIC18F25K20
    PIC18F4620
    PIC18F8680

    PIC18F2610
    PIC18F4680
    PIC18F8720

    PIC18F2620
    PIC18F4682
    PIC18F8722

    PIC18F2680
    PIC18F4685
    PIC18F8723


    1.3 Programmer - Full Support
    PIC12F510



    PIC12F675







    PIC16F506
    PIC16F88
    PIC16F887

    PIC16F684
    PIC16F883
    PIC16F917

    PIC16F690
    PIC16F884


    PIC16F87
    PIC16F886



    1.4 Programmer - Beta Support
    PIC12F508



    PIC12F509



    PIC12F629



    PIC12F635



    PIC12F683







    PIC16F505
    PIC16F716
    PIC16F874

    PIC16F627A
    PIC16F737
    PIC16F874A

    PIC16F628A
    PIC16F747
    PIC16F876

    PIC16F630
    PIC16F767
    PIC16F876A

    PIC16F631
    PIC16F777
    PIC16F877

    PIC16F636
    PIC16F785
    PIC16F877A

    PIC16F648A
    PIC16F818
    PIC16F882

    PIC16F676
    PIC16F819
    PIC16F913

    PIC16F677
    PIC16F870
    PIC16F914

    PIC16F685
    PIC16F871
    PIC16F916

    PIC16F687
    PIC16F872
    PIC16F946

    PIC16F688
    PIC16F873
    PIC16HV785

    PIC16F689
    PIC16F873A






    PIC18F1220
    PIC18F2682
    PIC18F6310

    PIC18F1230
    PIC18F2685
    PIC18F6390

    PIC18F1320
    PIC18F4220
    PIC18F6410

    PIC18F1330
    PIC18F4221
    PIC18F6490

    PIC18F2220
    PIC18F4320
    PIC18F6520

    PIC18F2221
    PIC18F4321
    PIC18F6525

    PIC18F2320
    PIC18F4331
    PIC18F6527

    PIC18F2321
    PIC18F4410
    PIC18F6585

    PIC18F2331
    PIC18F442
    PIC18F6620

    PIC18F2410
    PIC18F4420
    PIC18F6621

    PIC18F242
    PIC18F4423
    PIC18F6622

    PIC18F2420
    PIC18F4431
    PIC18F6627

    PIC18F2423
    PIC18F4450
    PIC18F6628

    PIC18F2431
    PIC18F4455
    PIC18F6680

    PIC18F2450
    PIC18F4458
    PIC18F6720

    PIC18F2455
    PIC18F448
    PIC18F6722

    PIC18F2458
    PIC18F4480
    PIC18F6723

    PIC18F248
    PIC18F4510
    PIC18F8310

    PIC18F2480
    PIC18F4515
    PIC18F8390

    PIC18F2510
    PIC18F452
    PIC18F8410

    PIC18F2515
    PIC18F4520
    PIC18F8490

    PIC18F252
    PIC18F4523
    PIC18F8520

    PIC18F2520
    PIC18F4525
    PIC18F8525

    PIC18F2523
    PIC18F4550
    PIC18F8527

    PIC18F2525
    PIC18F4553
    PIC18F8585

    PIC18F2550
    PIC18F458
    PIC18F8620

    PIC18F2553
    PIC18F4580
    PIC18F8621

    PIC18F258
    PIC18F4585
    PIC18F8622

    PIC18F2580
    PIC18F45K20
    PIC18F8627

    PIC18F2585
    PIC18F4610
    PIC18F8628

    PIC18F25K20
    PIC18F4620
    PIC18F8680

    PIC18F2610
    PIC18F4680
    PIC18F8720

    PIC18F2620
    PIC18F4682
    PIC18F8722

    PIC18F2680
    PIC18F4685
    PIC18F8723


    * These devices require a header board to be able to debug the device. See the Header Board Specification (DS51292) for more information. This document is available in the “Downloads” section of the PICkit 2 web page.
     

Share This Page