Searching \ for 'need help' in subject line. ()
Make payments with PayPal - it's fast, free and secure! Help us get a faster server
FAQ page: www.piclist.com/techref/index.htm?key=need+help
Search entire site for: 'need help'.

Truncated match.
PICList Thread
'need help'
1999\06\20@073748 by yasser osman

picon face
<x-flowed>hello,
I am going to construct my first 16c54 & 16c84 programmers
I found many on different sites,which one should I start with?






______________________________________________________
Get Your Private, Free Email at http://www.hotmail.com

</x-flowed>

1999\06\20@074409 by Benjamin Marsh

flavicon
picon face
On Sun, 20 Jun 1999, yasser osman wrote:

> hello,
> I am going to construct my first 16c54 & 16c84 programmers
> I found many on different sites,which one should I start with?
>
I used michael covingtons no part pic programmer, I don't think it does
54's though, worked first go. am happy now :)
Ben

>
>
>
>
>
> ______________________________________________________
> Get Your Private, Free Email at http://www.hotmail.com
>

1999\06\20@092317 by paulb

flavicon
face
Benjamin Marsh wrote, quoting Yasser Osman:

>> I am going to construct my first 16c54 & 16c84 programmers
>> I found many on different sites, which one should I start with?

> I used michael covingtons no part pic programmer, I don't think it
> does 54's though, worked first go. am happy now :)

 The 16C54 requires a parallel programming algorithm.  AFAIK, the only
kit approaches to this are the PICALL by Bojan Dobaj
http://www.geocities.com/SiliconValley/Peaks/9620/ and some of Jim
Robertson's programmers http://www.pipeline.com.au/users/newfound/

 These use a pre-programmed PIC to perform the parallel interface and
so are *slightly* dearer than the simple parallel-port-based ones.
--
 Cheers,
       Paul B.

1999\06\20@101213 by Byron A Jeff

face picon face
>
> hello,
> I am going to construct my first 16c54 & 16c84 programmers
> I found many on different sites,which one should I start with?

Two or three thoughts.

16c54 vs. 16C/F84 - no brainer. The 16C/F84 (C is the older part and it out
of production now I believe. F is the newer part, is cheaper, and has more
memory) is the winner. Serial programming algorithm, erasable without a
programmer, doesn't require precise time delays to program, and has more
program and data memory. The only advantage going for the 16C54 is that
the top speed (20Mhz) is twice as fast as the 16F84 (10Mhz).

16F84 vs. 16F877 - Now this is interesting. The 16F877 is Microchip's new 40
ping Flash based offering. Has the following features and more:

- 20 Mhz operation
- 368 bytes of RAM
- 8K of program flash
- 256 bytes of data flash
- 30 I/O pins
- 5V only programming. Can program both program and data flash
- 3 timers + capture registers
- Sync/Async UART
- I2C/SPI serial interfaces

Now it's pricey, $14.25 in singles. But compared to the $6 16F84 is looks like
a Rolls Royce compared to a Ford Aspire.

>From the discussion here, it's pretty much programmable with the same tools
and software as the 16F84. Only the config registers are significantly
different.

I also think that the the 5V only programming aspect is really interesting.
I'm slightly annoyed that they took and dedicated what I consider a useful
pin (Port B, pin 3) to the programming process, but getting an extra 17 pins
and all the other goodies more than makes up for it. But with 5V only that
means no programmable power supply is necessary. You can program it directly
from a parallel port, though the paranoid in me would probably still steal
5V power from the keyboard, just like I did for my 16C/F84 programmer I
built.

And lastly for Tjaart:

Microchip vs. Atmel - Also interesting. Atmel has some flash parts that are
in the same quality class as the 16F877 but in the 16F84 price range.
Programmers and tools are available. If you have not yet committed to Microchip
as many of us have, then the Atmel offerings look really really attractive.
See Tjaart, I have been listening! ;-)

Just some thoughts? Anyone else?

BAJ

1999\06\20@190929 by Don McKenzie

flavicon
face
Byron A Jeff wrote:

snip---

> 16F84 vs. 16F877 - Now this is interesting. The 16F877 is Microchip's new 40
> ping Flash based offering. Has the following features and more:

> I also think that the the 5V only programming aspect is really interesting.
> I'm slightly annoyed that they took and dedicated what I consider a useful
> pin (Port B, pin 3) to the programming process, but getting an extra 17 pins

Err.... You mean the RB3/PGM pin can't be used for normal RB3 I/O,
Byron?

> And lastly for Tjaart:
> Microchip vs. Atmel - Also interesting. Atmel has some flash parts that are
> in the same quality class as the 16F877 but in the 16F84 price range.
> Programmers and tools are available. If you have not yet committed to Microchi
p
> as many of us have, then the Atmel offerings look really really attractive.
> See Tjaart, I have been listening! ;-)
> Just some thoughts? Anyone else?

In my position, as we say at the track, I have 50 cents each way just to
be sure, but I think now that MicroChip has finally come up with other
flash alternatives, it should change the direction many users have been
heading. Pricing? Well, that speaks for itself, and is something
MicroChip should also closely examine.

Don McKenzie  spam_OUTdonTakeThisOuTspamdontronics.com http://www.dontronics.com

Don's Download Dungeon:   http://www.dontronics.com/download.html
Australian Electronics Ring http://www.dontronics.com/aering.html
Win $500USD Cash. Micro design contest:  http://www.simmstick.com

More... (looser matching)
- Last day of these posts
- In 1999 , 2000 only
- Today
- New search...