https://community.nxp.com/t5/8-bit-Microcontrollers/Part-Number-Naming-Conventions/m-p/1346059#M23411 <P>How does one decode the various letters in old Motorola obsolete part numbers? Example the microcontroler&nbsp; MC68705R3CS? What do the "C" and "S" letters stand for?&nbsp; Where do you find documentation or a key for this part number information?</P><P>Thank you for any any help or guidance.</P> Fri, 24 Sep 2021 23:53:05 GMT Trebor 2021-09-24T23:53:05Z https://community.nxp.com/t5/8-bit-Microcontrollers/Part-Number-Naming-Conventions/m-p/1346059#M23411 <P>How does one decode the various letters in old Motorola obsolete part numbers? Example the microcontroler&nbsp; MC68705R3CS? What do the "C" and "S" letters stand for?&nbsp; Where do you find documentation or a key for this part number information?</P><P>Thank you for any any help or guidance.</P> Fri, 24 Sep 2021 23:53:05 GMT https://community.nxp.com/t5/8-bit-Microcontrollers/Part-Number-Naming-Conventions/m-p/1346059#M23411 Trebor 2021-09-24T23:53:05Z https://community.nxp.com/t5/8-bit-Microcontrollers/Part-Number-Naming-Conventions/m-p/1346971#M23412 <P>The&nbsp;<SPAN>MC68705R3CS is a very old device and no longer manufactured so all the information is obsoleted, but as I remember the CS is the package type and the temperature range&nbsp;</SPAN></P> <P>&nbsp;</P> <P><SPAN>Regards</SPAN></P> <P>&nbsp;</P> Mon, 27 Sep 2021 15:24:06 GMT https://community.nxp.com/t5/8-bit-Microcontrollers/Part-Number-Naming-Conventions/m-p/1346971#M23412 vicentegomez 2021-09-27T15:24:06Z