Rich Webb <bbew.ar@mapson.nozirev.ten> wrote:> One thing to watch out for while you're getting started. Many AVRs > have on-board RC oscillators. For those that do, most (all?) come from > the factory with their fuses set to use the RC oscillator and NOT an > external clock/crystal. If you don't realize this and attempt to > program them with too high a programming CLK (> 1/8 the chip's master > clock) it may appear that the chip is dead. It isn't; just slow down > the ISP a little bit. > > http://www.sparkfun.com/commerce/categories.php > http://www.imagecraft.com/ > http://www.olimex.com/ > http://www.avrfreaks.net/ > http://www.digikey.com/I'd like to thank all of you for this wonderful information. I appreciate it very much. -pete
Atmel
Started by ●September 23, 2008
Reply by ●September 26, 20082008-09-26
Reply by ●October 2, 20082008-10-02
>Hello, > >I've done some PIC development before, with the PIC16F690, PIC18F4321, >etc. and I'm thinking about trying out the Atmel processors since I've >heard they have a flat memory space (no banks), a software stack, and >other things I am interested in. What would be a good entry level atmelDon't forget to look at the Renesas R8C series chips. They have all the features you are interested in, and best free development tools out there. The HEW IDE can be downloaded from the website, and offers GNU (unlimited) or Renesas Compiler (free up to 64k). Debug is done via a one wire connection. They are code compatible with the Renesas M16C chips that have large 1MB memory maps. http://www.renesas.com/en/r8ctiny
Reply by ●October 2, 20082008-10-02
On Oct 2, 5:47 am, "vinnie" <ckgri...@mailcan.com> wrote:> >Hello, > > >I've done some PIC development before, with the PIC16F690, PIC18F4321, > >etc. and I'm thinking about trying out the Atmel processors since I've > >heard they have a flat memory space (no banks), a software stack, and > >other things I am interested in. What would be a good entry level atmel > > Don't forget to look at the Renesas R8C series chips. They have all the > features you are interested in, and best free development tools out there. > The HEW IDE can be downloaded from the website, and offers GNU (unlimited) > or Renesas Compiler (free up to 64k). Debug is done via a one wire > connection. They are code compatible with the Renesas M16C chips that have > large 1MB memory maps. > > http://www.renesas.com/en/r8ctinyWhat is their CPU core based on, or similar to? Thanks.
Reply by ●October 2, 20082008-10-02
linnix wrote:>> >> http://www.renesas.com/en/r8ctiny > > What is their CPU core based on, or similar to? Thanks.Looks like its their own design: Page 15 of: http://documentation.renesas.com/eng/products/mpumcu/rej03b0144_r8c1a1bds.pdf donald
Reply by ●October 2, 20082008-10-02
donald wrote:> linnix wrote: >>> >>> http://www.renesas.com/en/r8ctiny >> >> What is their CPU core based on, or similar to? Thanks. > > Looks like its their own design: > > Page 15 of: > > http://documentation.renesas.com/eng/products/mpumcu/rej03b0144_r8c1a1bds.pdf > > > donaldIf you can evaluate a CPU by its instruction set: http://documentation.renesas.com/eng/products/mpumcu/rej09b0001_r8csm.pdf donald
Reply by ●October 2, 20082008-10-02
What Atmel? There is no more such company. http://www.microchip.com/stellent/groups/sitecomm_sg/documents/market_communication/en537504.pdf Vladimir Vassilevsky DSP and Mixed Signal Design Consultant http://www.abvolt.com
Reply by ●October 2, 20082008-10-02
On 2008-10-02, Vladimir Vassilevsky <antispam_bogus@hotmail.com> wrote:> > > What Atmel? There is no more such company. > > http://www.microchip.com/stellent/groups/sitecomm_sg/documents/market_communication/en537504.pdfMicrochip proposes an acquisition, and Atmel ceases to exist regardless of whether there's a deal or not? -- Grant Edwards grante Yow! Is this going to at involve RAW human ecstasy? visi.com
Reply by ●October 2, 20082008-10-02
Vladimir Vassilevsky <antispam_bogus@hotmail.com> wrote:> What Atmel? There is no more such company. > > http://www.microchip.com/stellent/groups/sitecomm_sg/documents/market_communication/en537504.pdfI thought you were being facetious until I read that link. That's very interesting. There seemed to be such a rivalry between the adherents the respective architectures, I wonder how they are all going to take it. I guess it is bank switching forever then for me. :) -pete
Reply by ●October 2, 20082008-10-02
Peter Keller wrote:> Vladimir Vassilevsky <antispam_bogus@hotmail.com> wrote: > >>What Atmel? There is no more such company. >> >>http://www.microchip.com/stellent/groups/sitecomm_sg/documents/market_communication/en537504.pdf > > > I thought you were being facetious until I read that link. > > That's very interesting. There seemed to be such a rivalry between the > adherents the respective architectures, I wonder how they are all going > to take it. > > I guess it is bank switching forever then for me. :)Seems a strange move for Microchip. Maybe they are simply cashed up, and see a fire-sale price in an industry they know ? On-Semi did just buy AMIS, but Microchip have always been more of a loner. Is the MIPS32 not getting the traction they hoped, so they need a side-door to ARM, Cortex, or even AVR32 ? Automotive AVR's ? The ATxmega is an interesting family, tho not yet in small packages. No mention is made of Atmel's CPLDs ? ( or of Atmel's R&D efforts...) - The omission of Atmel Roadmaps, suggests this is a cynical harvesting effort ? -jg
Reply by ●October 2, 20082008-10-02
On Oct 2, 2:45 pm, Jim Granville <no.s...@designtools.maps.co.nz> wrote:> Peter Keller wrote: > > Vladimir Vassilevsky <antispam_bo...@hotmail.com> wrote: > > >>What Atmel? There is no more such company. > > >>http://www.microchip.com/stellent/groups/sitecomm_sg/documents/market... > > > I thought you were being facetious until I read that link. > > > That's very interesting. There seemed to be such a rivalry between the > > adherents the respective architectures, I wonder how they are all going > > to take it. > > > I guess it is bank switching forever then for me. :) > > Seems a strange move for Microchip. Maybe they are simply cashed up, and > see a fire-sale price in an industry they know ?Microchip has a much higher price to sale ratio vs. Atmel. They can lower their P/S with this deal, even if they pay a premium. Atmel is a dog with their money losing fabs and many businesses.> > On-Semi did just buy AMIS, but Microchip have always been > more of a loner. > > Is the MIPS32 not getting the traction they hoped, so they need > a side-door to ARM, Cortex, or even AVR32 ? > Automotive AVR's ? > > The ATxmega is an interesting family, tho not yet in small packages. > > No mention is made of Atmel's CPLDs ? ( or of Atmel's R&D efforts...) > - The omission of Atmel Roadmaps, suggests this is a cynical > harvesting effort ?It will probably be in the RF/ASIC group, to be sold to a third company. Microchip and On-Semi do not want the RF/ASIC stuffs. Atmel should have spinned off these earlier and concentrates on the AVR. One thing I would like Microchip to do is to bring on ROM AVRs. ROM PICs are available for many years. Atmel does not understand the uC business.