architectural level optimizations and extensions. This allows the manufacturer to achieve custom design goals, such as higher clock speed, very low power consumption, instruction set extensions (including floating point), optimizations for size, debug support, etc. To determine which components have been included in a particular ARM CPU chip, consult the manufacturer datasheet and related documentation.

Some of the silicon options for the Cortex-M cores are:
* SysTick timer: A 24-bit system timer that extends the functionality of