Voltage Tampering Detection (SNVS) of iMX7

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Voltage Tampering Detection (SNVS) of iMX7

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takita
Contributor I

We use i.MX7 solo (MCIMX7D5EVM10SD).
VDD_SNVS_IN is connected to coin battery.

Our iMX7 can detect voltage tampering with SNVS_LP Status Register (LPSR) during power off.
But I cannot find what voltage of SNVS_IN can be detected as voltage tampering during power off in following documents.
 -"i.MX 7Dual Applications Processor Reference Manual"
 -"Security Reference Manual for i.MX7Dual and 7Solo Applications Processors"
 -"i.MX 7Dual Family of Applications Processors Datasheet"

What voltage of SNVS_IN can iMX7 detect "VTD" (1b) of "LPSR" during power off?
I'd like to know hardware specification of Voltage Tampering  during power off.

Thank you for your support.

Best Regards,
Takita

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igorpadykov
NXP Employee
NXP Employee

Hi Takita

 

additional data were sent you via mail.

 

Best regards
igor

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