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Architectures and Processors forum Current Variation due to Functional Unit activation or deactivation

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Current Variation due to Functional Unit activation or deactivation

HimanshuDoshi19 over 8 years ago

Hello to all,

I would like to measure the current variation due to Functional Unit activation and deactivation. Can anyone help me out with the assembly program or the code through which I can measure this? I am using LPCXpresso 54114 board(ARM Cortex-M4).

Kindly, help me out with this. I read the various documentation but didn't get a clear picture.

Thanking you,

Regards,

Himanshu

Top replies

Joseph Yiu over 8 years ago in reply to HimanshuDoshi19 +1 verified

Hi Himanshu, This will be challenging as the power consumption of each small parts in the processor is insignificant when compared to power consumption of memories, oscillator, clock buffers, etc. Don...
Joseph Yiu over 8 years ago in reply to HimanshuDoshi19 +1 verified

In NOP instruction sequence there is no write to register bank so all registers could be clock gated. When a sequence of ADD instructions are executed, the result of the ADD need to be stored and hence...