说明：  Cortex-M3是一个32位的核，在传统的单片机领域中，有一些不同于通用32位CPU应用的要求。谭军举例说，在工控领域，用户要求具有更快的中断速度，Cortex-M3采用了Tail-Chaining中断技术，完全基于硬件进行中断处理，最多可减少12个时钟周期数，在实际应用中可减少70%中断。
(Cortex-M3 is a 32 bit core. In the field of traditional MCU, there are some differences from the requirements of universal 32 bit CPU application. Tan Jun for example, in the industrial control field, users require faster interruption speed, Cortex-M3 uses Tail-Chaining interrupt technology, completely based on hardware interrupt processing, can reduce the maximum number of 12 clock cycles, in practical applications can reduce 70% interrupts.)