SWCU191 February 2022 CC1311P3 , CC1311R3 , CC2651P3 , CC2651R3 , CC2651R3SIPA
The processor implements a subset of the instruction set and features provided by the ARMv7-M architecture profile, and is binary compatible with the instruction sets and features implemented in other Cortex®-M profile processors. You can move software, including system level software, from the Arm® Cortex®-M4 processor to other Cortex®-M profile processors.
To ensure a smooth transition, Arm® recommends that code designed to operate on other Cortex®-M profile processor architectures obey the following rules and configure the Configuration and Control Register (CCR) appropriately: