now i plan to use TMS470,but you advice give up it instead of SM470, is there any different between TMS470 and SM470, are they pin to pin compatible ,same register they have? do i need change my program when i imigrant from TMS470 to SM470?

now i plan to use TMS470,but you advice give up it instead of SM470, is there any different between TMS470 and SM470, are they pin to pin compatible ,same register they have? do i need change my program when i imigrant from TMS470 to SM470?

TKS