Cache Two 32K caches, one for instructions and one for data, are used to speedīranch Prediction Cortex-M7 is the first ARM microcontroller to use branch prediction. These extremely high speedīuses are separate from M7's main AXI bus, which accesses other memory and peripherals. Perform up to 2 separate memory accesses in the same cycle. The DTCM bus is actually a pair of 32 bit paths, allowing M7 to The ITCM bus provides a 64 bit path toįetch instructions. Tightly Coupled Memory Tightly Coupled Memory is a special feature which allows Cortex-M7 fast single cycleĪccess to memory using a pair of 64 bit wide buses. 64 bitĭouble precision runs at half the speed of 32 bit float. Floating Point Unit The FPU performs 32 bit float and 64 bit double precision math in hardware.ģ2 bit float speed is approximately the same speed as integer math. Numerically intensive work using integers and pointers. Initial benchmarks have shown C++ code compiled byĪrduino tends to achieve 2 instructions about 40% to 50% of the time while performing Per clock cycle, at 600 MHz! Of course, executing 2 simultaneously depends upon the compiler Dual Issue Superscaler Architecture Cortex-M7 is a dual-issue superscaler processor, meaning M7 can execute 2 instructions CPU performance is many times faster than typical 32 bit microcontrollers.
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