hardware multiplication / division support in STM32F215xx

vedprakash · ‎2011-10-12

Posted on October 12, 2011 at 12:29

Does STM32F215xx/ STM32F217xx supports Single-cycle multiplication and hardware division ?

Tesla DeLorean · ‎2011-10-12

Posted on October 12, 2011 at 13:45

Doesn't the M3 and M4 core have a single cycle multiply? And the M4 a hardware divider capable of 2-12 cycle? Not sure why the STM parts would be any different.

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infoinfo989 · ‎2011-10-12

Posted on October 12, 2011 at 17:38

Take a look at the Cortex-M3 instruction set:

http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.ddi0337i/CHDDIGAC.html

There are several multiplies, including a single-cycle. Also a couple of divide instructions, which take between 2 and 12 cycles.