Hi On May 25, 2013, at 11:26 PM, Herbert Poetzl <[email protected]> wrote:
> On Sat, May 25, 2013 at 09:26:02PM -0400, Bob Camp wrote: >> Hi > >> I realize this is a bit like water torture - sorry about that. > >> If I go to Microchip Direct and ask for a PIC 18F with two >> UARTS and two A/D's I get the PIC18F86J72 and PIC 18F87J72. >> To me the second one is the obvious winner. It's got twice >> the flash for next to nothing more money. 1-25 piece price is >> $6.04. > >> Same search, 1 A/D, 4 UARTS, lowest cost this time. PIC18F65J94 >> is the winner. Lowest price package is $3.30 in 1-25 pieces. > > 4 UARTS are untypical for PICs and result in higher price > as the device usually has more pins (which makes them more > expensive) The ARM that the thread was looking at was a 6 UART / 4 A/D part. Thus the "load up the UARTS". Also the starting point for all this did involve serial i/o. > >> Are those some *very* arbitrary choices - you bet they are. >> They are random picks, and were not optimized to show any >> particular thing. Only to target an application that had some >> serial i/o and a bit of A/D involvement. > >> Bottom line - not all PIC's are $1. once you start adding >> peripherals. For $6 over in ARM land, you can get a lot of >> chip. To be fair, my experience has been that you can do better >> in the PIC24 line once you start adding stuff. Searching the >> PIC24's is hard enough that my brief search tonight did not >> show up a lower cost part. > > PIC24F04KA200 1 UART, 10 ADC, XLP, 1.38 USD (1.05 USD @1k) > PIC24EP32GP202 2 UART, 6 ADC, 2.76 USD (1.86 USD @1k) I knew they had to be there. Again suggesting that the PIC24's probably are a better starting point these days. > > One (dis)advantage of the Microchip PICs is that there > are so many different families and parts. Indeed Bob > > best, > Herbert > >> Bob > >> On May 25, 2013, at 9:05 PM, Bob Camp <[email protected]> wrote: > >>> Hi > >>> I just realized the "buy direct" button on that page requires a login. The >>> single piece direct price is $9.70. First price break is at 25 pieces (to >>> $8.95). > >>> Bob > >>> On May 25, 2013, at 8:56 PM, Bob Camp <[email protected]> wrote: > >>>> Hi > >>>> It's one of the Freescale K60's they have them in several speeds and >>>> packages. Others have similar parts. > >>>> http://www.freescale.com/webapp/sps/site/prod_summary.jsp?code=K60_120&nodeId=01624698C9DE2DDDAF&tab=Buy_Parametric_Tab&fromSearch=false > >>>> hopefully shows the family information > >>>> The first part on the list is the MK60FN1M0VLQ12 for 8% more money you can >>>> get the 150 MHz core rather than the 120 MHz core version. Both have >>>> enough pins that you can get at a lot of the peripherals at once. Both >>>> have enough pins that they are not a lot of fun to solder by hand. Of >>>> course their BGA cousins are even less hand solder friendly…. > >>>> Bob > > >>>> On May 25, 2013, at 6:48 PM, Graham / KE9H <[email protected]> wrote: > >>>>> On 5/25/2013 3:40 PM, Bob Camp wrote: >>>>>> You can get a part with 1MB of flash, 128KB of ram, 6 UARTS, 4 16 bit >>>>>> A/D's, 10/100 Ethernet, USB, and a bunch of other stuff for less than >>>>>> $10. Drop this and that, go to half the flash, and yup, the price is >>>>>> 1/2. Comes with a free toolchain and two very capable free versions of >>>>>> RTOS. > > >>>>> Bob: > >>>>> I was wondering which manufacturer/part you were referring to. > >>>>> Thanks, >>>>> --- Graham > >>>>> == > >>>> _______________________________________________ >>>> time-nuts mailing list -- [email protected] >>>> To unsubscribe, go to >>>> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >>>> and follow the instructions there. > >>> _______________________________________________ >>> time-nuts mailing list -- [email protected] >>> To unsubscribe, go to >>> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >>> and follow the instructions there. > >> _______________________________________________ >> time-nuts mailing list -- [email protected] >> To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >> and follow the instructions there. > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
