Very Simple ICSP Programmer

[mister_e]

Yet another reason why you should consider PICKit2. Along with it's ICD capability, EEPROM, Keeloq and device programming list, The standalone application give you USART tool (no need for MAX232)... AND NOW, the new V2.50 add this nifty 3 channel LogicAnalyser (logic signal stimulus and monitoring) tool... for free!

As if wasn't enough... >>>PICkit 2 Programmer-To-Go support for programming devices without a PC.<<<

http://www.microchip.com/stellent/id...cName=en023805

How about that?

~40$ for that... even if you don't use it as a daily/main programmer... only the free tools worth it no? I really like the Programmer-To-Go option....

[Ramonetnet]

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

[Ramonetnet]

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

>>> http://home.vrweb.de/~lotharstolz/st...vpc/index.html

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

Is this a problem ?
I thought LVP got "L" from "LOW" voltage, only 5 volts all around.
Am I wrong ?

The resistors here are 10 K, whilst yours are 4K7. Is this important ?
I see 2 mA shall flow in your circuit, and only 1 mA in the LOTHAR desing ...

[Leccy-Lee]

Forgive me for dragging an old topic, but i found this thread via Google and am new to the forum ( HI )..

I am trying to get this to work on a PIC16F88, it was posted that it worked fine but i have been trying for hours.

I have no experience of PICs at all, and all i am simply trying to do is build a design i got online that comes with the .hex firmware already. I simply need to get this firmware onto the PIC and away i can go.

Have read the datasheet for the pic, and about ICSP in circuit, and read this topic 3-4 times now. Heres how i have it so far, but i think its wrong?

9pin serial 16F88 pin
------------- ------------
3 4.7k 4 (vpp/mclr)
5 -- 5 (Grd)
4 4.7k 13 (Data ? PGD)
8 -- 12 (Data ? PGC)
7 4.7k ?? (which port?)

Then i use my circuits 5v to supply 5v to vdd, i measured my PC serial port on pin 3 as 10v, is that enough or is that my problem? I see in datasheet about low-voltage programming is an option but wasn't sure how to connect that up?

I have then tried both Ic-Prog and Winpic to "upload" the .hex firmware to my pic (still in circuit but connected as above) but neither seems to be working? Cant even tell if its connecting to the pic? In Winpic it says "failed to initialise programmer" and in Ic-Prog it just fails on verify. I have set both softwares to programmer "JDM" type as instructed.

Where am i going wrong, and what are the correct pins and settings for PIC16F88 please?

[nomad]

pins are wrong. pgd is data and pgc is clock. so is like this: 3-4.7k-4, 5--5, 4-4.7k-13, 8---13, 7-4.7k-12. sorry for formatting, am on my phone. also, if code protect is on, it will fail verify as it will not be able to read the code back from the pic (protected).