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TMS320C6657: Device power down sequence

Koichiro Tashiro
Mastermind 22945 points

Part Number: TMS320C6657

Hi,

My customer wants to confirm the device power down sequence requirements.
The shut off sequence is reverse order of power up sequence.
So power rails are shut off 1.5V => 1.8V => 1.1V. This is aligned to the device datasheet.

The waveform is below. As you can see, the shut off sequence is correct,
but 1.5V rail voltage slightly higher than 1.8V rail voltage around 400mV level.
Is this acceptable?  


Thanks and regards,
Koichiro Tashiro