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Re: [Usbpicprog-technical] PIC 16F628A
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From: ShadowCaster <sha...@gm...> - 2013-04-26 10:31:13
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Hello Frans, I implemented all the changes as per you instructions, now VDD = 4.97V and VPP=12.82V. It is an improvement though the 628A seems to be a really picky pic because it still refusing to be programmed... On Thu, Apr 25, 2013 at 5:50 PM, ShadowCaster <sha...@gm...>wrote: > Thank you Frans i'm not using an external power supply so i'll remove D4 > and replace it with a wire and also short the D9. > > > On Thu, Apr 25, 2013 at 4:22 PM, Frans Schreuder <fra...@gm... > > wrote: > >> I use the MBRL0520 (500mA, 300mV Vf) I don't know any equivalent >> through hole version but you can probably find it yourself. >> If you are not using an external power supply for your target chip, you >> can also just short the diode. >> >> Frans >> >> >> On 25-4-2013 15:13, ShadowCaster wrote: >> >> Do you have any specific model for the VDD diode to propose? Something >> like 1N5822RL or 1N5817 will be acceptable? >> >> >> On Thu, Apr 25, 2013 at 3:44 PM, Frans Schreuder < >> fra...@gm...> wrote: >> >>> Yes you can just replace D4 with a wire, there are no problems if you >>> do that. >>> Also it is smart to replace the diode which is in series with VDD with a >>> low drop shottky diode. >>> >>> On 25-4-2013 14:40, ShadowCaster wrote: >>> >>> Hello Frans, >>> >>> Probably you didn't receive my previous e-mail due to the attached >>> picture, >>> >>> VDD is almost perfect 5V if i remember correctly. >>> >>> Can i change the D4 on my current board without any other side effects >>> or there are more changes needed ? I printed a board based on your through >>> hole schematics so if there are more changes involved probably there will >>> be difficult to implement. >>> >>> Regards, >>> Nick >>> >>> >>> On Wed, Apr 24, 2013 at 9:22 PM, Frans Schreuder < >>> fra...@gm...> wrote: >>> >>>> Hello Nick, >>>> >>>> The voltage is on the low side. For this reason, in the new schematic, >>>> D4 has been replaced by a 0R resistor (or a wire). Have you also measured >>>> VDD? >>>> >>>> Kind regards, >>>> >>>> Frans Schreuder >>>> >>>> >>>> On 04/24/2013 07:54 PM, Nick wrote: >>>> >>>> Hello Frans, >>>> >>>> I measured the voltage between VPP and GND using a multimeter in the >>>> pic pins, it is 12.21V. I assume that this is not enough for programing the >>>> 628A? >>>> >>>> On 24/4/2013 3:46 μμ, Frans Schreuder wrote: >>>> >>>> The io_test function is good for an indication, but not very accurate >>>> in voltage. Using a multimeter is a better option. >>>> >>>> On 24-4-2013 13:58, ShadowCaster wrote: >>>> >>>> Hello Frans, >>>> >>>> Thanks for your quick reply i'll double check the voltages but i >>>> think that VPP is 11.4 to 12.3 when i try the I/O test function in the >>>> software, i'll connect the programmer with the pic and check with a >>>> multimeter and the I/O test function. >>>> >>>> >>>> On Wed, Apr 24, 2013 at 2:26 PM, Frans Schreuder < >>>> fra...@gm...> wrote: >>>> >>>>> Dear Nick, >>>>> >>>>> The 16F628A PIC does work with the current software / firmware, >>>>> although this pic is very selective when it comes to operating voltages. >>>>> Please verify that VDD > 4.5V and VPP >13V with the pic connected. >>>>> >>>>> Regards, >>>>> >>>>> Frans >>>>> >>>>> >>>>> On 24-4-2013 13:22, ShadowCaster wrote: >>>>> >>>>> Hello, >>>>> >>>>> I implemented the programmer based on the designs and it >>>>> works flawlessly with a PIC 18F2550 and a 18F1320. >>>>> The thing is that i tried to program a 16F628A that should be >>>>> compatible, although it is properly detected it doesn't write any data to >>>>> it. When i read it i get a repeated pattern : FF 3F FF 3F. >>>>> >>>>> I tried the same pic with a old serial programmer and it is written >>>>> without a problem so it is not a pic problem >>>>> >>>>> I tried both the latest stable as well as the latest devel >>>>> firmware/software. Is the functionality for this model broken in the latest >>>>> versions? Can somebody verify? >>>>> >>>>> Regards >>>>> Nick >>>>> >>>>> >>>>> ------------------------------------------------------------------------------ >>>>> Try New Relic Now & We'll Send You this Cool Shirt >>>>> New Relic is the only SaaS-based application performance monitoring service >>>>> that delivers powerful full stack analytics. Optimize and monitor your >>>>> browser, app, & servers with just a few lines of code. Try New Relic >>>>> and get this awesome Nerd Life shirt! http://p.sf.net/sfu/newrelic_d2d_apr >>>>> >>>>> >>>>> >>>>> _______________________________________________ >>>>> Usbpicprog-technical mailing lis...@li...https://lists.sourceforge.net/lists/listinfo/usbpicprog-technical >>>>> >>>>> >>>>> >>>>> >>>>> ------------------------------------------------------------------------------ >>>>> Try New Relic Now & We'll Send You this Cool Shirt >>>>> New Relic is the only SaaS-based application performance monitoring >>>>> service >>>>> that delivers powerful full stack analytics. Optimize and monitor your >>>>> browser, app, & servers with just a few lines of code. Try New Relic >>>>> and get this awesome Nerd Life shirt! >>>>> http://p.sf.net/sfu/newrelic_d2d_apr >>>>> _______________________________________________ >>>>> Usbpicprog-technical mailing list >>>>> Usb...@li... >>>>> https://lists.sourceforge.net/lists/listinfo/usbpicprog-technical >>>>> >>>>> >>>> >>>> >>>> -- >>>> When a man lies, he murders some part of the world.. >>>> These are the pale deaths which men miscall their lives.. >>>> All these I cannot bear to witness any longer.. >>>> Cannot the kingdom of salvation take me home? >>>> >>>> >>>> ------------------------------------------------------------------------------ >>>> Try New Relic Now & We'll Send You this Cool Shirt >>>> New Relic is the only SaaS-based application performance monitoring service >>>> that delivers powerful full stack analytics. Optimize and monitor your >>>> browser, app, & servers with just a few lines of code. Try New Relic >>>> and get this awesome Nerd Life shirt! http://p.sf.net/sfu/newrelic_d2d_apr >>>> >>>> >>>> >>>> _______________________________________________ >>>> Usbpicprog-technical mailing lis...@li...https://lists.sourceforge.net/lists/listinfo/usbpicprog-technical >>>> >>>> >>>> >>>> >>>> ------------------------------------------------------------------------------ >>>> Try New Relic Now & We'll Send You this Cool Shirt >>>> New Relic is the only SaaS-based application performance monitoring service >>>> that delivers powerful full stack analytics. Optimize and monitor your >>>> browser, app, & servers with just a few lines of code. Try New Relic >>>> and get this awesome Nerd Life shirt! http://p.sf.net/sfu/newrelic_d2d_apr >>>> >>>> >>>> >>>> _______________________________________________ >>>> Usbpicprog-technical mailing lis...@li...https://lists.sourceforge.net/lists/listinfo/usbpicprog-technical >>>> >>>> >>>> >>>> >>>> ------------------------------------------------------------------------------ >>>> Try New Relic Now & We'll Send You this Cool Shirt >>>> New Relic is the only SaaS-based application performance monitoring service >>>> that delivers powerful full stack analytics. Optimize and monitor your >>>> browser, app, & servers with just a few lines of code. Try New Relic >>>> and get this awesome Nerd Life shirt! http://p.sf.net/sfu/newrelic_d2d_apr >>>> >>>> >>>> >>>> _______________________________________________ >>>> Usbpicprog-technical mailing lis...@li...https://lists.sourceforge.net/lists/listinfo/usbpicprog-technical >>>> >>>> >>>> >>>> >>>> ------------------------------------------------------------------------------ >>>> Try New Relic Now & We'll Send You this Cool Shirt >>>> New Relic is the only SaaS-based application performance monitoring >>>> service >>>> that delivers powerful full stack analytics. Optimize and monitor your >>>> browser, app, & servers with just a few lines of code. Try New Relic >>>> and get this awesome Nerd Life shirt! >>>> http://p.sf.net/sfu/newrelic_d2d_apr >>>> _______________________________________________ >>>> Usbpicprog-technical mailing list >>>> Usb...@li... >>>> https://lists.sourceforge.net/lists/listinfo/usbpicprog-technical >>>> >>>> >>> >>> >>> -- >>> When a man lies, he murders some part of the world.. >>> These are the pale deaths which men miscall their lives.. >>> All these I cannot bear to witness any longer.. >>> Cannot the kingdom of salvation take me home? >>> >>> >>> ------------------------------------------------------------------------------ >>> Try New Relic Now & We'll Send You this Cool Shirt >>> New Relic is the only SaaS-based application performance monitoring service >>> that delivers powerful full stack analytics. Optimize and monitor your >>> browser, app, & servers with just a few lines of code. Try New Relic >>> and get this awesome Nerd Life shirt! http://p.sf.net/sfu/newrelic_d2d_apr >>> >>> >>> >>> _______________________________________________ >>> Usbpicprog-technical mailing lis...@li...https://lists.sourceforge.net/lists/listinfo/usbpicprog-technical >>> >>> >>> >>> >>> ------------------------------------------------------------------------------ >>> Try New Relic Now & We'll Send You this Cool Shirt >>> New Relic is the only SaaS-based application performance monitoring >>> service >>> that delivers powerful full stack analytics. Optimize and monitor your >>> browser, app, & servers with just a few lines of code. Try New Relic >>> and get this awesome Nerd Life shirt! >>> http://p.sf.net/sfu/newrelic_d2d_apr >>> _______________________________________________ >>> Usbpicprog-technical mailing list >>> Usb...@li... >>> https://lists.sourceforge.net/lists/listinfo/usbpicprog-technical >>> >>> >> >> >> -- >> When a man lies, he murders some part of the world.. >> These are the pale deaths which men miscall their lives.. >> All these I cannot bear to witness any longer.. >> Cannot the kingdom of salvation take me home? >> >> >> ------------------------------------------------------------------------------ >> Try New Relic Now & We'll Send You this Cool Shirt >> New Relic is the only SaaS-based application performance monitoring service >> that delivers powerful full stack analytics. Optimize and monitor your >> browser, app, & servers with just a few lines of code. Try New Relic >> and get this awesome Nerd Life shirt! http://p.sf.net/sfu/newrelic_d2d_apr >> >> >> >> _______________________________________________ >> Usbpicprog-technical mailing lis...@li...https://lists.sourceforge.net/lists/listinfo/usbpicprog-technical >> >> >> >> >> ------------------------------------------------------------------------------ >> Try New Relic Now & We'll Send You this Cool Shirt >> New Relic is the only SaaS-based application performance monitoring >> service >> that delivers powerful full stack analytics. Optimize and monitor your >> browser, app, & servers with just a few lines of code. Try New Relic >> and get this awesome Nerd Life shirt! >> http://p.sf.net/sfu/newrelic_d2d_apr >> _______________________________________________ >> Usbpicprog-technical mailing list >> Usb...@li... >> https://lists.sourceforge.net/lists/listinfo/usbpicprog-technical >> >> > > > -- > When a man lies, he murders some part of the world.. > These are the pale deaths which men miscall their lives.. > All these I cannot bear to witness any longer.. > Cannot the kingdom of salvation take me home? > -- When a man lies, he murders some part of the world.. These are the pale deaths which men miscall their lives.. All these I cannot bear to witness any longer.. Cannot the kingdom of salvation take me home? |
