Hi Said, Thanks for the info, I did check the Philips (and Sparkfun) web site(s) and I must admit the ARM chip is cheap and has impressive specifications. With the GNU tools, I know it will work and it will fit my homebrewer's budget :-) I used to consider $99 for a development kit cheap, but $29 beats it with good margin.
At that price, I don't see how I could pass on a chance to evaluate it, if not for the fact that I have so much 8051 code (and a Franklin compiler, wich is similar to the Keil) I agree that the Silab chips are somewhat expensive, at least for high volume consumer stuff. However, I do not consider 64k of Flash memory (and several kB of RAM for most parts) as small for an 8 bit micro, but there again, if you are considering applications that require large buffers, such as data compression, you probably would not want to use an 8 bit chip anyhow. Also, on the 8051, addressing RAM above the customary 128 bytes of DATA space (XDATA) takes a lot longer. On the 8051, RAM is not always equal :-) Thanks again. Didier KO4BB [EMAIL PROTECTED] wrote: > In a message dated 8/8/2006 19:51:06 Pacific Daylight Time, [EMAIL PROTECTED] > > writes: > > Hi Didier, > > I used their 8051F310 in many devices, it's a great little chip :) > > There are two issues that made me change to the Philips LPC2000 Arms though: > the SIL parts are somewhat expensive, and they don't have much memory, > especially SRAM. For the Arm's, there are GNU compilers (no need to pay > Keil), and > a bunch of great open-source RTOS'. > > Also, the Arm's are extremely low-power, and run up to a true 60Mips at 32 > bits. Plus they have lot's of memory and code compression (Thumb mode). > > Then there is Olimex and Sparkfun, they sell these Arms very cheap. Last > time I checked, SIL wanted to have $99 for an 8051F310 eval kit - the Arm > starts > at $29.99 at Sparkfun - no need to buy any software development tools for the > Arm either. > > Philips has parts with up to 512KB internal Flash and at least 64Kbytes SRAM > I believe, some of them pin-compatible to each other. > > On the PLL: Philips typically does very well on their PLL's - jitter is very > low. Certainly I've seen some of their PLL's in the ps range, which would > put the 1PPS output at probably better than 1E-11, 1s accuracy. I can > measure > the unit I have, and let you know later... > > bye, > Said > > > _______________________________________________ time-nuts mailing list time-nuts@febo.com https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts