On Fri, Jun 08, 2001 at 07:04:36AM -0600, Ronald G Minnich wrote:
> I'm looking at PLCC to DIP adapters. Here are some URLs for the rest of
> you :-)
>
> http://www.users.qwest.net/~oricom/plc-adpt.htm
>
>
>http://rom-emulator.com/cgi-bin/index/index.cgi/Adapters-with-ZIF-DIP-socket/01152104.htm
I have a list of adapter companies at
http://www.drzyzgula.org/bob/electronics/adapters.shtml
Two that you hadn't listed that might have what you are
looking for are
Logicical Systems, Inc, http://www.logicalsys.com/index.asp
-- see in particular http://www.logicalsys.com/cgi-bin/painfo.pl?PA32-32-DP-PP
Ironwood Electronics, http://www.ironwoodelectronics.com/
Winslow AdaptICs, http://www.winslow.co.uk
Beyond the price -- over $100 for most of these -- one of
the hassles in something like this is getting the right
height and orientation so as to not hit the other parts
on the board or the chassis. Depending on the situation,
it may be necessary to design a custom part. Some of these
companies sell just the PLCC plug that you can use in your
own board design. It isn't too hard to design something
like this, a little adapter board is well within the
capabilities of something like the free version of Eagle
(http://www.cadsoft.de) which has the added advantage of
being well-supported under Linux. An order of little 2 sq in
boards from a production board house should cost around
$300-400 (regardless of quantity up to around 100 or so :-)
and the PLCC plugs and DIP sockets should together run
around $30-50 for each adapter.
As for Nikolai's question, If M-Systems is selling the
TSOP-I to DIP adapter for $50, that's a bargain as
far as these things go. I've looked at the DOC Millenium Plus
pinout, and to plug one of those things into a 32-pin
DIP socket, you'd need an application-specific adapter,
since among other things you have to tie some of the
input pins to the power and ground nets in order to set
the device into 8-bit mode. Even generic TSOP-to-DIP
adapters will cost $150 or more, so a custom one for
the DOC at $50 is a Good Deal, as painful as it is.
Again, you can design your own. Forgoing the ZIF socket
and having the TSOP-I chip to a board, populating it with
Mil-Max pins for the DIP side, you might be able to
get the cost down to $10 or so per adapter; the cost is
likely to be more like $40 or more if you need to adapt
the TSOP-I into a PLCC socket, because you'll need a
PLCC plug which will cost maybe $30.
--Bob
