ICSP using a 16F84a to program 24CXX

[aftab]

Now I guess I don't know what you really want...you start off talking about 24xxx eeproms and now throw a DS1624 into the mix.
What do you really want here?

I only want to program 24Cxx. The DS1624 is just an example.

I was able to program the 24C04 ic as shown in manual. But I cannot do it in ICSP mode. The example with DS1624 shows how to read/write(?) in ICSP mode(?).

So, for now need to figure out how to program the 24Cxx using i2c commands - as i2cwrite does not seem to work in ICSP mode.

Thanks
Aftab.

[skimask]

I only want to program 24Cxx. The DS1624 is just an example.

I was able to program the 24C04 ic as shown in manual. But I cannot do it in ICSP mode. The example with DS1624 shows how to read/write(?) in ICSP mode(?).

So, for now need to figure out how to program the 24Cxx using i2c commands - as i2cwrite does not seem to work in ICSP mode.

Thanks
Aftab.

Are you using MeLabs PicBasic or PicBasicPro?
Program the 24C04 as shown in which manual?

[aftab]

Are you using MeLabs PicBasic or PicBasicPro?
Program the 24C04 as shown in which manual?

This is microEngineering Labs Picbasic Pro v 2.46

The sample code is on pp 53~56 of the spiral bound booklet that comes with it.

An older PDF version of this is downloadable.

thanks
Aftab.

[skimask]

This is microEngineering Labs Picbasic Pro v 2.46

The sample code is on pp 53~56 of the spiral bound booklet that comes with it.

An older PDF version of this is downloadable.

thanks
Aftab.

Ok, so you want to use the ICSP header, running into the PIC as it would be when you are re-programming the PIC using the JDM programmer...to pass the signals thru to "write to the 24xxx" (as opposed to calling it programming the 24xxx).

As far as pp 53-56 in the manual goes, all I see is info on DATA, DEBUGIN and DEBUGOUT.

[mister_e]

http://www.ic-prog.com/index1.htm

http://www.ic-prog.com/index1.htm

If you're looking for a simple solution, you could skip the PIC and USE ic-PROG (or PONY-PROG) with a SI- Interface

http://www.lancos.com/siprogsch.html

[aftab]

http://www.ic-prog.com/index1.htm

http://www.ic-prog.com/index1.htm

If you're looking for a simple solution, you could skip the PIC and USE ic-PROG (or PONY-PROG) with a SI- Interface

http://www.lancos.com/siprogsch.html

Hi Steve,

Thanks for the links.

What I am trying to do is - I guess you can say that a stand alone i2c programmer for 24Cxx using ICSP.

The following link has the schematic on pp 35:
http://www.imagesco.com/microcontroller/pbc_man.pdf
(the same is on pp 54 of my book)
Also on:
http://www.melabs.com/resources/pbpmanual/

I have successfully wrote/write/programmed 24CXX using that. BUT I want to make one that can do the same in ICSP (In-Circuit Serial Programming).

And I guess that is more complicated. I can do the ICSP using ponyprog/icprog using the ICSP header of olimex board. Interestingly it needs only 3(three wires) - ground,data and clock -- that goes to pin 4, 5 and 6 respectively-- But cannot do the same with my 16f84a programmer. There are few caps, resistors and transistors on the board on which the 24CX is mounted and with drawing power from these three pins, power are supplied to rest of the pins of 24CXX. I want to do the same that olimex icsp is doing. Do the same using my 16f84a.

---------|....................................|--------|
My ........|---------------gnd--------|.24cxx..|
16f84a ...|---------------dat--------|..........|
---------|---------------clk--------|--------|
[DOTS are actually blanks i.e. nothing]

I presume I need to do something like start,stop,ack,... that is used in i2c programming. Some lead would help me.

My knowledge of the exciting world of pic is till now limited to blinking leds and prog one 24cxx on board using the schematic that comes e pbp.

Thanks
Aftab.

[skimask]

I guess I'm still missing something here...

1) Do you want to build a stand-alone (no PC required at all) 24xxx programmer that would have a program already loaded into it, ready to program more 24xxx chips? Basically nothing more than a 24xxx chip copier...

2) Do you want to build you own programmer, capable of only doing 24xxx type chips with a PC connected?

3) Am I still missing a piece of the picture?