Hi Michael, Hmm, Atmel 89C55WD cost about same (or higher) price of Freescale Kinetis microcontrollers:
http://www.mouser.com/Search/Refine.aspx?Keyword=kinetis&Ns=Pricing|0&FS=True These Kinetis are ARM Cortex-M0 and its power consumption is very low. I'm currently using KL25Z128 running a POSIX RTOS called NuttX and I'm impressed with both (Microcontroller and RTOS). This is just my opinion (my 2 cents). Best Regards, Alan On 8/30/13, Michael Hawkins <korgpolyex...@yahoo.com> wrote: > Jon, > > thanks for the feedback. The product I am developing has zero need for > anything except Ethernet/IP/primitive web server and 8 low voltage relays. > > The device will retail for 99 bucks USD. So it has to be absolutely minimal. > > The AT89C55WD will do fine even if I have to add a 6264 for an extra 8K of > RAM. > > The ENC28J60 is darn cheap too. > > I shall need 8 transistors and eight relays. > > it all goes into a simple box. > > So I don't want any of the Rasberry Pi or other types of entire SBC's. I've > used the TS7200 type LINUX boards for other more complex products that > require an entire OS and numerous ancillary hardware. That's not what I am > building this time around. > > > Mike > > > > ________________________________ > From: jon <j...@jonshouse.co.uk> > To: Michael Hawkins <korgpolyex...@yahoo.com>; > sdcc-user@lists.sourceforge.net > Sent: Friday, August 30, 2013 2:20 PM > Subject: Re: [Sdcc-user] Alternates to Atmel 89C55WD > > > On Fri, 2013-08-30 at 10:53 -0700, Michael Hawkins wrote: >> Thanks to all that replied to my shockingly newbie question! I googled >> more and found the answers I needed. I love SDCC! But all of my work >> with SDCC so far has been Z80 because I've worked with Z80 for well >> over 25 years now. >> >> I wanted to switch to more modern chips. I liked the Atmel 89C55WD >> because it has four IO ports plus 24K flash and 256 SRAM. It seemed to >> be darn cheap for all of what it has built in. > If your going to go modern then why not use an ARM core. STM32 for > example. > > I used to program Z80 on CP/M, then Z80 on embedded boards. These days I > don't bother with anything much smaller than a full ARM board with > Linux. The price of ARM SOC is so low, compare a beagle board or > Raspberry Pi or one of the generic ARM boards what other hardware you > can buy for the money and its a no contest. Plus having a linux kernel > gives me networking, filesystems, displays etc. > > For small jobs I use Microchip PIC. I often combine an ARM board and > PIC and offload anything real time parts onto the PIC then use a serial > channel back to the ARM board for communication. The PIC had great real > world I/O and in the years i've used them I have never had one fail in > service. > > Jon > > PS The raspberry Pi is good board to experiment but a poor choice for > real products. ------------------------------------------------------------------------------ Learn the latest--Visual Studio 2012, SharePoint 2013, SQL 2012, more! Discover the easy way to master current and previous Microsoft technologies and advance your career. Get an incredible 1,500+ hours of step-by-step tutorial videos with LearnDevNow. Subscribe today and save! http://pubads.g.doubleclick.net/gampad/clk?id=58040911&iu=/4140/ostg.clktrk _______________________________________________ Sdcc-user mailing list Sdcc-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/sdcc-user
