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TM4C129DNCPDT: current consumption in deep sleep mode

Jo Chen
Intellectual 2895 points
Part Number: TM4C129DNCPDT

Hi Tiva team,

My customer found that current consumption of TM4C129DNCPDT in deep sleep mode varies significantly from part to part.

From datasheet we can learn that the current is between 0.454 - 2.16 mA with different peripheral configuration. (as shown below)

However, my customer got result of 0.75 - 1.75 mA from part to part with same software, same peripheral configuration. The attached is the test result from customer, they tested two TM4C129DNCPDT and measured the current at three different points (marked as A, B, C). They also did the A-B-A swap test, the phenomenon is with particular chips. Is this variance normal?

PB2_SLEEP_Current.xlsx

Thanks, 

Jo