Post by thread:[PIC]: Programming a PIC16F628 using a JDM Program

is it possible to program a PIC16F628 with a JDM programmer? in IC-Prog 1.04, i can select the 16F628 for the JDM programmer, and it indicates that i have to place it in the socket like a 16F84. but when i try to program the 16F628, it seems to stay empty. what's wrong? thanks for your help! tino spam_OUTnbuehmTakeThisOuTascom.ch -- http://www.piclist.com hint: To leave the PICList .....piclist-unsubscribe-requestKILLspam@spam@mitvma.mit.edu

Martin Buehler wrote: > > is it possible to program a PIC16F628 with a JDM programmer? > in IC-Prog 1.04, i can select the 16F628 for the JDM programmer, and it > indicates that i have to place it in the socket like a 16F84. > but when i try to program the 16F628, it seems to stay empty. > what's wrong? > thanks for your help! > tino > > nbuehmKILLspamascom.ch I'm not familiar with this programmer, but possibly RB4 which is the LVP pin. Try tying it low with a 10K resistor. -- Best regards Tony mICros http://www.bubblesoftonline.com .....salesKILLspam.....bubblesoftonline.com -- http://www.piclist.com hint: To leave the PICList EraseMEpiclist-unsubscribe-requestspam_OUTTakeThisOuTmitvma.mit.edu

> is it possible to program a PIC16F628 with a JDM programmer? > in IC-Prog 1.04, i can select the 16F628 for the JDM programmer, and > it indicates that i have to place it in the socket like a 16F84. but > when i try to program the 16F628, it seems to stay empty. what's > wrong? thanks for your help! tino Yeah, like Tony said, RB4 (pin 10 for PDIP & SOIC) needs to be tied low but iin the JDM design is connected to +5V. With this fixed I have had success programming PIC16F627's.-- Brent Brown, Electronic Design Solutions 16 English Street, Hamilton, New Zealand Ph/fax: +64 7 849 0069 Mobile/txt: 025 334 069 eMail: brent.brownspam_OUTclear.net.nz -- http://www.piclist.com hint: To leave the PICList @spam@piclist-unsubscribe-requestKILLspammitvma.mit.edu

Yes... It works, but you need to modify the LVP pin in the JDM socket... I just made a 18 pin dip socket with the LVP pin cut off and soldered to gnd. I plug this into the programmer and the pic into it... It works fine... I tend to use ISCP now and that works every time... Andrew {Original Message removed}

Hello Martin, >is it possible to program a PIC16F628 with a JDM programmer? yes it's possible, but the schematic should be modified >in IC-Prog 1.04, i can select the 16F628 for the JDM programmer, and it >indicates that i have to place it in the socket like a 16F84. >but when i try to program the 16F628, it seems to stay empty. >what's wrong? nothing is wrong with ICProg we are going to release very soon our PIC-PG2B serial port programmer based on JDM design which will program 8,18,28,40 pin PICs and 24Cxx EEPROMS. you can see the schematics at http://www.olimex.com/dev/pic-pg2b-sch.gif and the board layout at http://www.olimex.com/dev/pic-pg2b.gif Best regards Tsvetan --- PCB prototypes for $26 at http://run.to/pcb (http://www.olimex.com/pcb) Development boards for PIC, AVR and MSP430 (http://www.olimex.com/dev) -- http://www.piclist.com hint: To leave the PICList KILLspampiclist-unsubscribe-requestKILLspammitvma.mit.edu