At 04:43 AM 3/15/2004, jisak wrote: >Hi all > >Do you know if it is possible to make ICSP with Picstart+ for 12fxxx, >and how ? Yes. First: search for "ICSP" at the Microchip website and build up the buffer circuit shown in several of the app notes. This takes care of Vdd + Vpp. You may also need to buffer the serial clk and data lines. I've mentioned previously my "stoopid buffer circuit" - search the archives for that string. Note the silly spelling of "stoopid" - it should be easy to find. This very simple buffer is neat in that it allows bi-directional communications with the programmer while having enough current gain to drive fairly heavy loads connected to those PIC pins. In my case, these are 820 Ohm loads to Vdd - far too much load for the PS+ programmer to drive. We've done up a little card that sits on top of the PS+ and comes out to a connector that mates with one of our products. I'll see if I can get the files converted to GIF or JPG or whatever (right now, they are in HPGL format). The card works well with 12c508, 12c671 and 12F675 parts. It should work with all 12 bit & 14 bit parts but I have only used with the 3 part numbers mentioned. dwayne -- Dwayne Reid Trinity Electronics Systems Ltd Edmonton, AB, CANADA (780) 489-3199 voice (780) 487-6397 fax Celebrating 20 years of Engineering Innovation (1984 - 2004) .-. .-. .-. .-. .-. .-. .-. .-. .-. .- `-' `-' `-' `-' `-' `-' `-' `-' `-' Do NOT send unsolicited commercial email to this email address. This message neither grants consent to receive unsolicited commercial email nor is intended to solicit commercial email. -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body