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There was an error in the diagram. This is the good one. Sorry.

mr Sarma - if both links were identical, why one stoopped at size X and the other did not ?
Ok - let's be positive and enjoy life in every drop.
Thanks for the support - I did appreciate it;...

mr Sarma : the file is there (2.177.632 bytes without a problem)

c: >wget http://ww1.microchip.com/downloads/en/DeviceDoc/51553E.pdf
--03:17:11-- ...

Mr_E : you are very kind.
But while I was waiting for your help,
I did some patch tests and ... it works

( I open'd a thread called "LVP for 18f452" ...)

What it says is I melted 2 designs...

Gentlemen, please find attached the schematics for a LVP "cable" (?) for 18F452 PIC.
I did "melt" mr's Lothar (1) design with mr's Jose Pino (2) design, and yes, it works.

(1) =...

mr Sarma : (I think) I did not say I can not use it (because of my design).
I was trying to say I can not use it because I don't know the electric diagram for it !
(All that stuff about...

Well, let me explain a bit my environment. I am not in a "industrial" situation.
We want to build a solar intensity detector, so the solar cell provides some analog voltage, the PIC converts it to...

YES, all you people are telling me again and again
there is something called "5-pin-header for ICSP"
I stll did not understand at all.

LET ME READ THE BOOKS (thanks, mack) and I SHALL BE BACK !...

mr-E : the 12 USD card seems to require some "Programmer" (there is such a connector on the board", and the picture says "PICFLASH-2" ... What is the cost of this piece ?

MackRackit : I also do...

Thank you, mr Skimask ... I do agree on all your opinions, except on what I have to do !
All I have is a proto-board with a PIC on it.
There is no way I plug a 5/6pin header in it - I don't have...

Thank you all, true !

I did write to Microchip again, saying 136 € was too expensive and all I wanted was to program a 18F452 (old chip) and/or a 18F4520 (new chip).

They answer is clear :
...

Here I have a LVP-cable, very similar to yours ...

>>> http://home.vrweb.de/~lotharstolz/stolz.de.be/lvpc/index.html

It does NOT work for me, and my RS-232 provides 10 volts.

Is this a...

OK - if you 3 agree in that, maybe I shall skip those "cheap" programmers ..

I was about to buy this one :

PIC-PG2C @ http://www.olimex.com/dev/pic-pg2c.html = 19 €.

OK - I go to the page...

mister-e : what one do you recomend then ?
I can spend 30 - 50 euros, but dont want to buy

>>> http://www.microchipdirect.com/productsearch.aspx?Keywords=DV003001++

Part Number: DV003001 -...

mr ACETRONICS : thanks for the sample.

Here is my code ( I am using MPLAB IDE v 8.0, just downloaded from MicroPic ),
which says basically the same : a value for configuration bits.

My...

Xcuse my poor english, mr Raflex, but ... what does "Just one time" mean ?
I HAVE TO SET "CONFIG1H" or NOT ?

And to the second part ... when you say "IMPORT THE HEX FILE" ...
... you mean...

I am very sorry I posted few (general) questions in the "basic" forum

Can the moderator move them to the apropiate place ?

Thanks.

Then either :

a) your Vdd is 2,5 volts

b) your PIC is gone nuts

c) any other I dont know right now - time to sleep here

Cheers.

I am trying (without success, of course) to use ICSP, using Low Voltage.

To help to make it work, would some sweet soul answer some of my questions ?

a) can I use RS-232 to program a 18F452 ?...

a) instead of trying to imagine the possible combinations,
I would go and program it !

b) if you "select" Port A mode, why don't you specify the Port B mode of operation ?
It is NOT so large...

I have read lots of old posts about my question,
and I would like to ask it again in April 2008 ...

If I want to use Microchip PIC 18F452, what is the best programmer to use ?

Ok ... tell...

I see no code saying "port b shall be used for output" .... do you ?
Ramon.

Can you update the schematic to be used with 18F452 ?
Ramon.

Good evening. I want to use 18F452 with "XT" oscillator mode (4 MHz xtal)

I have read the thread "18F Config fuses", and there is just one question in my mind :

If I use the statement "config...