I do not
dispute htat. My main comment was to the poster who suggested
an ARM-based microocntroller (I have never seen seen such a device in
a DIL package)
No, but there's at least one in a PLCC package, sockets for which
Do you haappen to have the part number for that? And know of a supplier
that sells 1-off qunanitites. When I looked at the commpon suppliers in
the UK< I couldn't find any prototypiong-friemndly ARMs :-)
The reason I ask about the supplier is that I rememebr som years ago
when I was doing a commerical design, findin the ideal chip for the job.
I thn found that _nobody_ would sell me less than a tube quantity (which
as they wwre nearly \pounds 200 each was way over budget). This was after
I'd done all the rest of the design...
have contacts on 0.100" centers, so in my mind, a
PLCC is about the
same as a DIL socket regarding ease of use. If I'm really dead-set
Actually, it's signlly harder to wire (you can't put a PLCC socket on
stripboard, for example), but certianly no real problem.
on a through-hole package (perhaps I want to wire-wrap
the design),
SMT adapters are inexpensive are easy to use.
You can plug the PLCC socket into wire-wrap pin strips (eitehr the proper
ones, or cut apart DIL wire-wrap sockets) and then wire-wrap to that.
Yes, you ahve an extra contact which may reduce long-time reliability,
but this is a prototype, right?
If you're making things for your own use,
fine--use whatever works
for you. But don't expect others to use galena-and-catwhisker diodes
or ammonium sulphate and aluminum wet rectifiers.
DOn't worry, I won't :-)
Consider a project to convert a PC AT-type keyboard to a PC XT one.
I could do this with a Z80, an SIO chip, some ROM and some RAM--and
the "glue" to interface it all, or I could do it with an 8 pin PIC
microcontroller that costs less than a dollar. The choice to me is a
no-brainer--my design debugging time will be substantially less.
And I would fully agree with you there.
-tony