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Does anyone know a resource for the naming conventions Motorla uses for its microprocessors, or even better yet, all of its ICs? |
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Motorola naming conventions
Started by ●September 12, 2004
Reply by ●September 12, 20042004-09-12
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--- In , "Daniel L Newhouse" <misterscary2001@y...> wrote: > Does anyone know a resource for the naming conventions Motorla uses > for its microprocessors, or even better yet, all of its ICs? I want to add a real specific question, what does the 'HC' in m68HC11 mean? I'd still like to know about the general naming conventions. |
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Reply by ●September 12, 20042004-09-12
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At 12:31 AM 9/13/2004 +0000, you wrote: >--- In , "Daniel L Newhouse" ><misterscary2001@y...> wrote: > > Does anyone know a resource for the naming conventions Motorla uses > > for its microprocessors, or even better yet, all of its ICs? > >I want to add a real specific question, what does the 'HC' in m68HC11 >mean? > >I'd still like to know about the general naming conventions. The 'HC" stands for Highspeed Cmos. Motorola's older cpus i.e. 6800, 6801, 6802, 6803, and 6809 were all made using Nmos, and so they didn't have an 'HC' in the name. Also, HC technology didn't come out until much later then these older cpu's. The HC stuff was first out as 74HCxx stuff, as one of many alternatives to the original 7400 stuff, although not quite as fast as the 7400 stuff, still faster than the 74Cxx stuff, which is the old-technology Cmos. Steve |
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Reply by ●September 13, 20042004-09-13
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If you take a look at the Reference Manual for the 68HC11, it shows the
different meanings for the different part numbers. When I say reference manual,
I mean the 620 page PDF file, and not the Reference Guide, which is considerably
smaller. LF Steve Tabler <> wrote: At 12:31 AM 9/13/2004 +0000, you wrote: >--- In , "Daniel L Newhouse" ><misterscary2001@y...> wrote: > > Does anyone know a resource for the naming conventions Motorla uses > > for its microprocessors, or even better yet, all of its ICs? > >I want to add a real specific question, what does the 'HC' in m68HC11 >mean? > >I'd still like to know about the general naming conventions. The 'HC" stands for Highspeed Cmos. Motorola's older cpus i.e. 6800, 6801, 6802, 6803, and 6809 were all made using Nmos, and so they didn't have an 'HC' in the name. Also, HC technology didn't come out until much later then these older cpu's. The HC stuff was first out as 74HCxx stuff, as one of many alternatives to the original 7400 stuff, although not quite as fast as the 7400 stuff, still faster than the 74Cxx stuff, which is the old-technology Cmos. Steve --------------------------------- Yahoo! Groups Links To --------------------------------- |
