The core thrust of Architecture has been to define core business requirements,
and then construct the IT solution to meet those requirements, typically as
instances of software. While this seems like a simple concept, many in enter-
prise IT went way off course in the last 10 to 15 years.
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 A1-20.ARMv7 is documented as a set of Architecture profiles. The profiles are defined as follows: ARMv7-A The application profile for systems supporting the ARM and Thumb instruction sets, and requiring virtual address support in the memory management model. ARMv7-R The realtime profile for systems supporting the ARM and Thumb instruction sets, and requiring physical address only support in the memory management model ARMv7-M The microcontroller profile for systems supporting only the Thumb instruction set, and where overall size and deterministic operation for an implementation are more important than absolute performance. While profiles were formally introduced with the ARMv7 development, the A-profile and R-profile have implicitly existed in earlier versions, associated with the Virtual Memory System Architecture (VMSA) and Protected Memory System Architecture (PMSA) respectively.
■ High Performance, Low Power AVR? 8-Bit Microcontroller
■ Advanced RISC Architecture
–120 Powerful Instructions – Most Single
Clock Cycle Execution
–32 x 8 General Purpose Working Registers
–Fully Static Operation
