What is VRC_CTRL?

[malove]

Hello

I have a question regarding the power management section of the S32K314 MCU.

studyseok8466_1-1729586150245.png

[Figure1]

In [Figure 1], it appears that VRC_CTRL is the signal responsible for determining whether to supply 1.5V to the internal core. My question is, does VRC_CTRL enter the BASE through GPIO, or is it input as a different waveform?

Thank you for your help!

[malove]

Thank you @PavelL 

If I am using VRC_CTRL, is the output of VRC_CTRL PWM?

[PavelL · Accepted solution]

Hi @malove ,

No, it is an analog signal which controls base of external BJT, as it is depicted on your picture.

Best regards,

Pavel

[malove]

Thank you!!

[PavelL]

Hi @malove ,

if VRC_CTRL is not used (please refer to S32K3XXRM rev9 chapter 42.7.3 PMC Configuration Register (CONFIG), bits LMBCTLEN and LMEM), the pin can be used as PTE13. 

Best regards,

Pavel