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Quick Question on Waveform Sampling with ADE7758 and ADE7753

Question asked by pico20191 on Apr 12, 2015
Latest reply on Apr 15, 2015 by dlath

We are using these devices in multiple energy meter designs.  They continuously sample V, I, Watts and VA using a mircocontroller which reads those values from the SPI port based in the device IRQ.  I now need to be able set up a mode where I collect values from the Waveform registers of these ADE devices.  What is not clear to me from the spec is,

 

How fast (often) will I need to read the Waveform register in order to get every sample, so that none are overwritten and lost?

 

Does changing the sample rate change the frequency with which I would need to be able to read the Waveform register?

 

Thanks!

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