S32M276XX LVR(low voltage reset) function test

[Ted_Qiao]

Hi NXP technician,

I want to make a hardware test about the LVR(Low voltage reset) function on VDD_HV_A pin of S32M276 IC. The S32M276 is SoC IC, all power are generated internally, So How could I verify this function on PCBA level? Kindly ask you for any suggestion.

Ted_Qiao_0-1787054923749.png

[Julián_AragónM]

Hi @Ted_Qiao,

LVR is enabled by default, and generates a POR. After a chip POR event, you can determine which power domain caused it by reading the PORF and LVRx flags in Low Voltage
Status And Control (LVSC) register.

You can externally limit the IC's voltage supply to try and generate a LVD event, or LVR POR, and check the LVRAF flag.

Best regards,
Julián