MPC5746C exit fromstandby mode problem

[yankuang1]

My T-BOX product requires very low power consumption,  STOP mode can not meet the demand.

if most of the device is unpowered during the standby,I want to save some register or variable values,Is it necessary to configure the chip to boot from the backup RAM?But I can not find some configuration methods in the user's manual.Can you provide me the relevant reference code or information?

[petervlna]

Hi,

for storing register values trough reset you can use core registers.

Refer to core reference manual chapter 2.6 Reset setting:

Peter

[yankuang1]

Hi,

I looked at the manual, these registers have a special purpose. Can users use it to store their own variables?Which register is recommended if it can be used?

[petervlna]

Hi,

You can use for example SPRG registers.

Peter

[yankuang1]

Hi,

I want to configure the chip to boot from the backup RAM,what should I do?