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Richard Erlacher
12/08/11 10:02
Read: 894 times
Denver, Co
USA


 
#185035 - Looks good, so far, eh?
Responding to: David Prentice's previous message
David Prentice said:
These single-clockers average out at about 6x a regular 8051. i.e. a lot of 12cycle ops take 2 cycles on the new core.

Do you mean that the part takes two cycles to execute a "single-cycle" instruction, or do you mean that many instructions are "two-cycle" instructions anyway?

The best feature is the double buffered TX, RX on the SPI, so your SPI slave can run without any gaps.

This seems to be a good feature. Have you pressed the rate limit on the SPI? I wonder how fast it can actually run.

The SPI shares its IRQ with the UART, which seems a bit pointless since it could have a vector of its own.

The PWM and push-pull outputs are nothing better than any other 8-bit controller.

The 89LP51RD2 looks quite attractive. If it is limited to 20 or 24MHz, it will be slower than the 35MHz Chinese STC12C5AxxS2 chips. It appears to have similar features. Their 'singe-clock' feature means several 12 cycle ops are 3 cycles.

Has anyone here had a play with these STC chips? At least they are available off the shelf. (I am waiting for some to arrive from China). Atmel is good at vapourware.

Indeed!

David.



List of 76 messages in thread
TopicAuthorDate
AT89LP51xD2 ... coming?        Jan Waclawek      08/29/11 02:45      
   Sounds brilliant!      Andy Neil      08/29/11 03:25      
      Was it AVR who made low-quantity available? Or just spin-off      Per Westermark      08/29/11 05:18      
         Probably true      Andy Neil      08/29/11 07:25      
            Hobbyists and students are really important      Per Westermark      08/29/11 07:37      
               Also...      Andy Neil      08/29/11 07:42      
         That wasn't the only thing ...      Richard Erlacher      08/29/11 08:35      
            Assembler      Per Westermark      08/29/11 09:09      
               'LP simulator      Jan Waclawek      08/29/11 10:06      
                  Good      Per Westermark      08/29/11 10:15      
                  No ... I doubt he means that ...      Richard Erlacher      08/29/11 11:14      
               That may have been the case, but ...      Richard Erlacher      08/29/11 11:12      
               While that may be the case ...      Richard Erlacher      09/20/11 09:10      
                  Never used C - planned to but had to settle for half memsize      Per Westermark      09/20/11 09:54      
                     See ... 'C' can make the memory requirement greater      Richard Erlacher      09/20/11 19:56      
                        But it ain't *necessarily* so      Andy Neil      09/21/11 00:13      
                           Yes, that's a valid basis for the choice of 'C'      Richard Erlacher      09/22/11 10:59      
                        Just don't kick in open doors      Per Westermark      09/21/11 02:50      
                           Again, you may be totally correct about that ...      Richard Erlacher      09/22/11 11:14      
                        sure, and so friggin what if ...      Erik Malund      09/21/11 07:53      
                           well ... that's not exactly what I did ...      Richard Erlacher      09/22/11 11:33      
      On chip debug      Robert Revens      09/15/11 01:12      
         Why unlikely?      Per Westermark      09/15/11 01:26      
            That's true.      Robert Revens      09/15/11 02:01      
            Yes, that's what I meant!      Andy Neil      09/15/11 02:28      
         Missed the point!      Andy Neil      09/15/11 02:27      
            Ah, sorry.      Robert Revens      09/15/11 13:53      
   Single Clocker LP Chips From Atmel      Michael Karas      08/29/11 05:55      
   Samples      Andy Neil      08/29/11 07:44      
      Samples      Michael Karas      08/29/11 08:19      
         Samples      Andy Neil      09/02/11 02:47      
            Samples Not...      Michael Karas      09/02/11 05:30      
               they are good at that      Erik Malund      09/02/11 08:38      
               Atmel says...      Andy Neil      09/02/11 16:22      
               Samples Yes!!      Michael Karas      09/14/11 14:33      
                  Nothing here yet      Andy Neil      09/14/11 15:48      
                     you are not in the US      Jan Waclawek      09/15/11 12:07      
                        No excuse!      Andy Neil      09/15/11 12:55      
                        Envelope?      Michael Karas      09/15/11 18:29      
                      ... "coming" ...      Andy Neil      09/20/11 05:08      
                        Yet another missed opportunity.      Andy Neil      10/31/11 12:28      
                           Sorry thought this thread closed ...      Phillip M Gallo      10/31/11 13:11      
                              Now maybe you guys will see why I don't use 'em      Richard Erlacher      11/06/11 12:04      
                              hard to tell, but...      Jan Waclawek      11/07/11 01:45      
                                 They're thrashing about, but ...      Richard Erlacher      11/07/11 07:35      
                                    why the sigh ...        Erik Malund      11/07/11 07:52      
                                       Probably not ... but you never know ...      Richard Erlacher      11/08/11 09:58      
                                    datasheets      Jan Waclawek      11/07/11 15:25      
                                       I'm glad they're there ...      Richard Erlacher      11/08/11 10:00      
                                          Sad, but true.      Andy Neil      11/08/11 15:51      
                                             Too much "designers"      Per Westermark      11/08/11 16:03      
                                                it's that old bugaboo ... appearance over substance ...      Richard Erlacher      11/08/11 19:45      
                                                I'd say      Erik Malund      11/09/11 06:29      
                           "The part will only be available in about 3 weeks"      Andy Neil      11/09/11 14:36      
                              I've heard/read that comment from them before ...      Richard Erlacher      11/09/11 21:01      
                                 Common with delays for new chips        Per Westermark      11/10/11 03:26      
                                    Quite so!      Andy Neil      11/10/11 12:21      
                                    I have to remind the public-at-risk      Richard Erlacher      11/11/11 14:19      
                                       Again      Per Westermark      11/11/11 14:41      
                                          There's a purpose ...      Richard Erlacher      11/11/11 23:34      
                                 I agree with Per !!        Michael Karas      11/10/11 06:15      
                                    Not so, but it probably applies to every one of ATMEL's      Richard Erlacher      11/11/11 14:23      
                           samples      Jan Waclawek      12/07/11 22:43      
                              I tested...      Michael Karas      12/08/11 04:42      
                                 The AT89LP4052 works very well      David Prentice      12/08/11 09:33      
                                    Looks good, so far, eh?      Richard Erlacher      12/08/11 10:02      
                                       A typical op      David Prentice      12/08/11 12:11      
                                          singleclockers      Jan Waclawek      12/08/11 15:48      
                                          impressive      Maarten Brock      12/10/11 03:20      
                                             I will wait and see.      David Prentice      12/10/11 09:40      
                                                Transistors are cheap      Per Westermark      12/10/11 13:06      
                                          I can't find that      Jan Waclawek      12/11/11 09:41      
                                             Sorry. I thought it was unlikely.      David Prentice      12/11/11 10:19      
                                                copy/paste      Jan Waclawek      12/11/11 15:02      
                                 thanks      Jan Waclawek      12/08/11 11:23      
                              Have you received those samples, Andy?      Andy Neil      12/09/11 03:52      

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