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???
02/17/11 21:36
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 		 #181166 - You have a point, but...
Responding to: ???'s previous message
Richard Erlacher said:
He wouldn't be going on about DIP-availability if he knew much about this industry at all. One of the "problems" that has, with the increase of speed, plagued DIP-packaged parts is the length of the leads, particularly power and gnd. Long wires inside the component package can't be improved by clever layout or thoughtful supply bypass.


Hi Richard,

Check the supply and crystal oscillator pin positions on the ATmega AVR pdips, assuming the glass is central in the dip chip the power and oscillator pins are situated dead central on the AVR. Also, I have overclocked one of my AVR's by 50%(30mips) with no crashing or problems on breadboard. I tried 40MHz and 48MHz crystals to check if they would work and they only work at 1/3 frequency for the reason, the crystals(any) above about 30MHz are not fundamental but 3rd overtone or harmonic.
JA

List of 84 messages in thread
TopicAuthorDate
upcoming AT89LP chips            01/01/70 00:00      
   Interesting..            01/01/70 00:00      
      MCS-251            01/01/70 00:00      
   I wouldn't hold my breath ...            01/01/70 00:00      
   Why bother waiting?            01/01/70 00:00      
      Says who?            01/01/70 00:00      
         says me!            01/01/70 00:00      
            Doing oneself a favour?            01/01/70 00:00      
               RE: Tie-ins            01/01/70 00:00      
               Yes,but...            01/01/70 00:00      
                  Who else manufactures '51 in PDIL40 at low cost?            01/01/70 00:00      
                     Nobody can beat STC in the field of low cost 8051            01/01/70 00:00      
                        Nice link            01/01/70 00:00      
                           yes so fast            01/01/70 00:00      
                        Nice stuff in PDIL 40 aswell eh!            01/01/70 00:00      
                  Low cost DIP's..            01/01/70 00:00      
                     Who uses DIPs?            01/01/70 00:00      
                        The hobbyist connection..            01/01/70 00:00      
                           Things to like            01/01/70 00:00      
                              Free Tools..            01/01/70 00:00      
                                 ARM            01/01/70 00:00      
                                    Re: ARM            01/01/70 00:00      
                                       Intel            01/01/70 00:00      
                                          Never did            01/01/70 00:00      
                                             it wasn't always like that            01/01/70 00:00      
                                                actively promoting the core?            01/01/70 00:00      
                                                   things were different then ...            01/01/70 00:00      
                                       define "abandoned"            01/01/70 00:00      
                                          Managers            01/01/70 00:00      
                                          Re: Intel            01/01/70 00:00      
                                             actually, Intel *used to make* ARMs...            01/01/70 00:00      
                                                I know..            01/01/70 00:00      
                                                   Loved the efficient 68k emulation in newer Palms            01/01/70 00:00      
                                                      Re: 68K virtualisation            01/01/70 00:00      
                                          Abandoned            01/01/70 00:00      
                                             intel museum            01/01/70 00:00      
                                                 request historical documents            01/01/70 00:00      
                                                   what link?            01/01/70 00:00      
                                                      here            01/01/70 00:00      
                                                   wayback machine            01/01/70 00:00      
                                                      unfortunately not - in this case            01/01/70 00:00      
                                                         ftp://download.intel.com/            01/01/70 00:00      
                                                      I've found it increasingly rare ...            01/01/70 00:00      
                                                   museum            01/01/70 00:00      
                           re: the hobbyist connection            01/01/70 00:00      
                              Re: the hobbyist connection            01/01/70 00:00      
                              My experience            01/01/70 00:00      
                        Multitude of packages            01/01/70 00:00      
                           In that case..            01/01/70 00:00      
                           AVR - only limited DIP availability.            01/01/70 00:00      
                              Limited needs for full set of DIL chips            01/01/70 00:00      
                                 Unfortunately, there are stumbling blocks            01/01/70 00:00      
                           "Breadboards" ?            01/01/70 00:00      
                              Yes I do,            01/01/70 00:00      
                              Lovely example!            01/01/70 00:00      
                                 A thing of beauty, eh?            01/01/70 00:00      
                                    What's crazy is that many of these seem to work            01/01/70 00:00      
                     RE: Check long-term availability of any DIP variants            01/01/70 00:00      
                        DIP            01/01/70 00:00      
                           And your point is...?            01/01/70 00:00      
                              I'm not convinced that's real reason ...            01/01/70 00:00      
                                 Prototyping methods            01/01/70 00:00      
                                    You can say that again!            01/01/70 00:00      
                                       Not really            01/01/70 00:00      
                                 You have a point, but...            01/01/70 00:00      
                                    Have you counted the oscillator?            01/01/70 00:00      
                              Look at the package pin-count.            01/01/70 00:00      
                                 Pin counts            01/01/70 00:00      
                                    Haven't seen skinny 40-pin DIL            01/01/70 00:00      
                                    I've got to agree            01/01/70 00:00      
                                       high pin-count DIP            01/01/70 00:00      
                                          I'm not sure what the constraints were, but ...            01/01/70 00:00      
                                             Oops. I meant 0.6" DIL            01/01/70 00:00      
                                                Shrink DIP            01/01/70 00:00      
                                                   I remember,,,            01/01/70 00:00      
                                                      Yes, it was 0.9 inches as was that 68000            01/01/70 00:00      
            maybe not, but            01/01/70 00:00      
               Yep,but...            01/01/70 00:00      
                  Is it 1998 already?            01/01/70 00:00      
                  something everybody will have to learn to live with            01/01/70 00:00      
                     I'm not so certain of that ...            01/01/70 00:00      
                        also disappearing            01/01/70 00:00      
                           Well, once again, I have to agree ...            01/01/70 00:00      
            Re: AVR/xmega            01/01/70 00:00      

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