ARM的官方参考手册.是英文版本. ARMv6-M supports the Thumb instruction set including a small number of 32-bit instructions introduced to the architecture as part of the Thumb-2 technology in ARMv6T2. ARMv6-M supports the 16-bit Thumb instructions from ARMv7-M alo
This manual documents the Microcontroller profile of version 7 of the ARM® Architecture, the ARMv7-M architecture profile. For short definitions of all the ARMv7 profiles see About the ARMv7 architecture, and architecture profiles on page A1-32.
