jdm programmer for 16f877a

falleaf · Joined: 23 May 2004 Posts: 48

I would like to build my own programmer for 16f877a and 16f876a. I would like to use JDM programmer. Anyone support the schemes for meeh?

falleaf · Joined: 23 May 2004 Posts: 48

may anyone help?

future · Joined: 14 May 2004 Posts: 330

www.ic-prog.com

The programmer and lots of schematics.

I have used JDM to program 18f452, 16f867 and 16f877a with no problems.

falleaf · Joined: 23 May 2004 Posts: 48

may you give me the clear scheme? I'm in doubt about my circuit. pls send me via email: [email protected]

Thanks muchie.

rwyoung · Joined: 12 Nov 2003 Posts: 563 Location: Lawrence, KS USA

Click on the screen capture of the software in the middle of the page. Then look at the left hand side list. One of the first links takes you to a list of links pointing to schematics.
_________________
Rob Young
The Screw-Up Fairy may just visit you but he has crashed on my couch for the last month!

falleaf · Joined: 23 May 2004 Posts: 48

I got that scheme and built it long time ago, and I did program it with 16f84 and 628... all small chip is oki. However, as I connect to the larger socket, it caused problems. And I would like to be sure about that.

socket 18 = socket 40:

pin 4 = pin 1 = mclr
pin 5 = pin 12 = vss
pin 14 = pin 11 = vdd
pin 13 = pin 40 = rb7
pin 12 = pin 39 = rb6

I connect it directly, so is it right?

future · Joined: 14 May 2004 Posts: 330

You need to connect rb3 to gnd through a 100ohms resistor.

falleaf · Joined: 23 May 2004 Posts: 48

Thanks future, I'll try and tell you the results.