44 TQPF ZIF socket

Started by Eirik Karlsen February 14, 2004
Hi,
my project is nearing completion, and I will be producing maybe a hundred PCB's.
I'll be using the PIC18F442 in a 44 lead TQPF (10x10mm square chip). The chip will have a bootloader,
but to get the bootloader into the chip I'll need a ZIF socket.
I've been looking all over for such a socket but couldn't find any.

Anyone know where to get it? --
*******************************************
VISIT MY HOME PAGE:
<http://home.online.no/~eikarlse/index.htm>
LAST UPDATED: 23/08/2003
*******************************************
Best Regards
Eirik Karlsen



why not build in an ICSP header? then you can program the bootloader
directly into the installed PIC. That will save you time since you
can probably build the programming sequence into your testing
procedures.

--- In , Eirik Karlsen <eikarlse@o...> wrote:
> Hi,
> my project is nearing completion, and I will be producing maybe a
hundred PCB's.
> I'll be using the PIC18F442 in a 44 lead TQPF (10x10mm square
chip). The chip will have a bootloader,
> but to get the bootloader into the chip I'll need a ZIF socket.
> I've been looking all over for such a socket but couldn't find any.
>
> Anyone know where to get it? > --
> *******************************************
> VISIT MY HOME PAGE:
> <http://home.online.no/~eikarlse/index.htm>
> LAST UPDATED: 23/08/2003
> *******************************************
> Best Regards
> Eirik Karlsen




Ooops....
 

Phil wrote:

 why not build in an ICSP header?  then you can program the bootloader
directly into the installed PIC.  That will save you time since you
can probably build the programming sequence into your testing
procedures.

--- In p...@yahoogroups.com, Eirik Karlsen <eikarlse@o...> wrote:
> Hi,
> my project is nearing completion, and I will be producing maybe a
hundred PCB's.
> I'll be using the PIC18F442 in a 44 lead TQPF (10x10mm square
chip). The chip will have a bootloader,
> but to get the bootloader into the chip I'll need a ZIF socket.
> I've been looking all over for such a socket but couldn't find any.
>
> Anyone know where to get it?
>
>
> --
> *******************************************
> VISIT MY HOME PAGE:
> <http://home.online.no/~eikarlse/index.htm>
> LAST UPDATED: 23/08/2003
> *******************************************
> Best Regards
> Eirik Karlsen
 
 

to unsubscribe, go to http://www.yahoogroups.com and follow the instructions

--
*******************************************
VISIT MY HOME PAGE:
<http://home.online.no/~eikarlse/index.htm>
LAST UPDATED: 23/08/2003
*******************************************
Best Regards
Eirik Karlsen
 

Yes, but ICSP still requires that there be a (boot) program in the chip doesn't it?
Or can a dead(blank) chip move data to FLASH??
 

Phil wrote:

 why not build in an ICSP header?  then you can program the bootloader
directly into the installed PIC.  That will save you time since you
can probably build the programming sequence into your testing
procedures.

--- In p...@yahoogroups.com, Eirik Karlsen <eikarlse@o...> wrote:
> Hi,
> my project is nearing completion, and I will be producing maybe a
hundred PCB's.
> I'll be using the PIC18F442 in a 44 lead TQPF (10x10mm square
chip). The chip will have a bootloader,
> but to get the bootloader into the chip I'll need a ZIF socket.
> I've been looking all over for such a socket but couldn't find any.
>
> Anyone know where to get it?
>
>
> --
> *******************************************
> VISIT MY HOME PAGE:
> <http://home.online.no/~eikarlse/index.htm>
> LAST UPDATED: 23/08/2003
> *******************************************
> Best Regards
> Eirik Karlsen
 
 

to unsubscribe, go to http://www.yahoogroups.com and follow the instructions

--
*******************************************
VISIT MY HOME PAGE:
<http://home.online.no/~eikarlse/index.htm>
LAST UPDATED: 23/08/2003
*******************************************
Best Regards
Eirik Karlsen
 


ICSP is used to program a totally blank chip.  No program is required, as ICSP support is built into the chip (well, provided it is one of the PIC that supports ICSP, anyway.)
-----Original Message-----
From: Eirik Karlsen [mailto:e...@online.no]
Sent: Saturday, February 14, 2004 2:55 PM
To: p...@yahoogroups.com
Subject: Re: [piclist] Re: 44 TQPF ZIF socket

Yes, but ICSP still requires that there be a (boot) program in the chip doesn't it?
Or can a dead(blank) chip move data to FLASH??
 

Phil wrote:

 why not build in an ICSP header?  then you can program the bootloader
directly into the installed PIC.  That will save you time since you
can probably build the programming sequence into your testing
procedures.

--- In p...@yahoogroups.com, Eirik Karlsen <eikarlse@o...> wrote:
> Hi,
> my project is nearing completion, and I will be producing maybe a
hundred PCB's.
> I'll be using the PIC18F442 in a 44 lead TQPF (10x10mm square
chip). The chip will have a bootloader,
> but to get the bootloader into the chip I'll need a ZIF socket.
> I've been looking all over for such a socket but couldn't find any.
>
> Anyone know where to get it?
>
>
> --
> *******************************************
> VISIT MY HOME PAGE:
> <http://home.online.no/~eikarlse/index.htm>
> LAST UPDATED: 23/08/2003
> *******************************************
> Best Regards
> Eirik Karlsen
 
 

to unsubscribe, go to http://www.yahoogroups.com and follow the instructions

--
*******************************************
VISIT MY HOME PAGE:
<http://home.online.no/~eikarlse/index.htm>
LAST UPDATED: 23/08/2003
*******************************************
Best Regards
Eirik Karlsen
 

to unsubscribe, go to http://www.yahoogroups.com and follow the instructions

And you can't afford to have a small 6 pin header, or 6 in-line pads
for programming via ICSP? ICSP also gives you the ability to debug
once the chip is mounted, so you'll know if it's a misprogrammed device
or a fabrication problem (shorts/opens etc.). It would also allow you
change the bootloader if you need to (adding encryption for example).
The overhead to support ICSP is minimal.
A few resistors, and a diode for /MCLR isolation.
Don't forget the pulldown R on LVP to ensure that you don't unintentionally
end up in LVP mode.
Robert
If you don't have time to do it right, when will you have time to do it over?

Eirik Karlsen wrote:
>
> Hi,
> my project is nearing completion, and I will be producing maybe a hundred PCB's.
> I'll be using the PIC18F442 in a 44 lead TQPF (10x10mm square chip). The chip will have a bootloader,
> but to get the bootloader into the chip I'll need a ZIF socket.
> I've been looking all over for such a socket but couldn't find any.
>
> Anyone know where to get it?



100 pieces will probably be at minimum charge for most distributors to
do the programming, nothing to fuss with then.

Chad

--- Eirik Karlsen <> wrote:
> Hi,
> my project is nearing completion, and I will be producing maybe a
> hundred PCB's.
> I'll be using the PIC18F442 in a 44 lead TQPF (10x10mm square chip).
> The chip will have a bootloader,
> but to get the bootloader into the chip I'll need a ZIF socket.
> I've been looking all over for such a socket but couldn't find any.
>
> Anyone know where to get it? > --
> *******************************************
> VISIT MY HOME PAGE:
> <http://home.online.no/~eikarlse/index.htm>
> LAST UPDATED: 23/08/2003
> *******************************************
> Best Regards
> Eirik Karlsen >


=====
My software has no bugs. Only undocumented features.

__________________________________



Hi,

To answer your original question, look here:

http://www.mqpelectronics.co.uk/adapters/adapters.php3?display_cat&formactiondisplay

They have adapters to almost any footprint known to man....well, that may be
an overstatement, but they do have a lot.

Regards, and good luck with your project,

Mike ----- Original Message -----
From: "Eirik Karlsen" <>
To: <>
Sent: Saturday, February 14, 2004 8:41 PM
Subject: [piclist] 44 TQPF ZIF socket > Hi,
> my project is nearing completion, and I will be producing maybe a hundred
PCB's.
> I'll be using the PIC18F442 in a 44 lead TQPF (10x10mm square chip). The
chip will have a bootloader,
> but to get the bootloader into the chip I'll need a ZIF socket.
> I've been looking all over for such a socket but couldn't find any.
>
> Anyone know where to get it? > --
> *******************************************
> VISIT MY HOME PAGE:
> <http://home.online.no/~eikarlse/index.htm>
> LAST UPDATED: 23/08/2003
> *******************************************
> Best Regards
> Eirik Karlsen > to unsubscribe, go to http://www.yahoogroups.com and follow the
instructions
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