I have started a study about the MSP430...i did some little programs and the speed is exceptional... Miguel -----Mensagem original----- De: Kris Wilk Para: PICLIST@MITVMA.MIT.EDU Data: Sexta-feira, 13 de Outubro de 2000 15:53 Assunto: Re: [OT]: MSP430F112 / 149 16 bit Micro from TI >Dave, > >Rob Severson (here on PIClist) has mentioned the MSP430 series a couple of >times, once in response to a question of mine regarding low power and >flexible clock options I needed for a project. I looked into them and got >the flash emulation kit (MSP-FET430X110 I think...) for $49 direct from TI, >which is a fabulous deal. Comes with everything you need to develop/burn >software for their flash chips including a slick development software set >that does Assembler and C (though the C compiler is a limited version that >compiles up to 1kb of generated code...still very nice). There is very >little outside information about these chips, but if you look at the TI >website, there's plenty of (quite well written) documentation, several >sample applications, and a lot of useful tidbits of code for various maths, >I/O (I2C, UART, SPI.....), etc. > >I have now used both the MSP430F1101 and MSP430F1121 flash devices with >beautiful results. I can keep an RTC going in software and wake up every >once in a while to process data at 1MHz or so on an internal RC Osc (tuned >using the 32kHz watch crystal as a solid reference), and I use about 1-2 uA >in doze mode, or 0.4 mA when fully active at 1 MHz. Very low power, to say >the least! Hell, I can put the thing to sleep at 0.1 uA and it'll come to >life from an interrupt in < 6 uS to full active state... > >I also like the instruction set. Very clean, lots of addressing modes to >play with, and ends up making my code a lot more human friendly than my PIC >code for most tasks. Plus I can run on the full clock speed rather than >clk/4, though some instructions do take a couple or three cycles to >complete. Remember that if you run the 430 at 5 Mhz with a crystal, that's >pretty much like running a PIC at 20 MHz, so they're really on par with the >PIC speed-wise. > >I can also fiddle with all sorts of clock modes that divide down and use >either the crystal or the onboard RC. I can even change which source the >CPU uses on the fly, so if I need to process data with time accuracy I can >switch the CPU to the xtal and then back to the RC for fast, regular code. >Cool. Very cool. > >If you can't tell yet, I love these chips. And the price is right: I can >get the 4kb FLASH F1121 for about $3-4 or better in *ones*. At 10000 pcs, >the F1101 (1 kb flash) is supposed to be $0.99 each. That's with 16 i/o >lines, ADC, UART, flash reprogrammable, in-circuit reprogrammable, blah >blah blah, and it's a 16-bit uC rather than 8-bit. Beat that Microchip. >Availability is not great but Arrow, Allied, Rochester, Wyle and even >Digikey have in-stock a few varieties, and lead times don't appear to be >too bad for others, at least for the 1101 and 1121 that I've tried. I think >(hope) this will get better... > >Don't get me wrong...the PIC is really nice for a lot of things, but I'm >discovering the MSP430 is often even nicer. > >By the way, thanks Rob for pointing me toward the 430...well worth it. Do >you use them?? > >Kris Wilk >ReefNet Inc. >www.reefnet.on.ca > >At 10:43 AM 10/13/00, you wrote: >>Hi, >> Has anyone had any experience with the MSP430F112 or MSP430F149 micros?. >>They look interesting. Low power. OK speed. 12 bit A/D. >>Has anyone actually bought any? If so, how much are they and where did >>you get >>them? >>I'm looking for a lower power micro than the PIC. Any info on the TI parts is >>appreciated. >> >>Regards, >>Dave >> >>-- >>http://www.piclist.com hint: To leave the PICList >>mailto:piclist-unsubscribe-request@mitvma.mit.edu > >-- >http://www.piclist.com hint: To leave the PICList >mailto:piclist-unsubscribe-request@mitvma.mit.edu > > > > -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu