Hello Ibrahem, At a high level, I suspect that the issue you're observing is being caused by one of the key improvements to the esp430ce1a compared to the esp430ce1. I've included a summary of these in the snippet below from the ESP430CE1, ESP430CE1A, ESP430CE1B Peripheral Modules User's Guide ( SLAU134 ). Please spend some time reading through this document. Also, I would recommend looking into the differences between the STARTCURR (Energy Measurement Start Current) thresholds discussed on pages 24 and 25 in SLAU134 . Due to the differences between these devices, I would recommend that you re-calibrate the esp430ce1 as well instead of using the esp430ce1a calibration configuration. Regards, James MSP Customer Applications
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