그것을 알아보자 - ARM Cortex-M3

ARM Cortex-M3

Cortex-M3 프로세서는 마이크로 컨트롤러, 자동차 시스템, 산업 제어 시스템 및 무선 네트워킹 등

다양한 범위의 분야에서 사용할 수 있는 고성능, 저가의 플랫폼을 위해 개발된 프로세서입니다.

Specifications

Architecture : ARMv7-M

Bus Interface : 3x AMBA AHB-Lite interface (Harvard bus architecture)

AMBA ATB interface for CoreSight debug components

ISA Support : Thumb/Thumb-2 subset

Pipeline : 3-stages

Memory Protection : Optional 8 region MPU with sub regions and background region

Bit Manipulation : Integrated Bit-field Processing Instructions and Bus Level Bit Banding

Interrupts : Non-maskable Interrupt (NMI) + 1 to 240 physical interrupts

Interrupt Priority Levels : 8 to 256 priority levels

Wakeup Interrupt Controller : Optional

Enhanced Instructions : Hardware Divide (2~2 Cycles), single-cycle (32x32) multiply,

Saturated Adjustments Support

Sleep Modes :

- Integrated WFI and WFE Instructions and Sleep On Exit capability

- Sleep and Deep Sleep Signals

- Optional Retention Mode with Arm Power Management Kit

Debug : Optional JTAG and Serial Wire Debug ports, Up to 8 Breakpoints and 4 Watchpoints

Trace : Optional Instruction (ETM), Data Trace (DWT), and Instrumentation Trace (ITM)

DMIPS/MHz range : 1.25 ~ 1.89

CoreMark®/MHz : 3.34

MPU(Memory Protection Unit) : Yes (option)

Maximum MPU Regions : 8

Trace (ETM or MTB) : ETMv3 (option)

DSP(Digital Signal Processing) : No

Floating Point Hardware : No

Systick Timer : Yes

Built-in Caches : No

Tightly Coupled Memory : No

Bus Protocol : AHB Lite, APB

Single Cycle Multiply : Yes (option)

CMSIS Support : Yes

Dual Core Lock-Step Support : No