Is there ram/register that will survive through reset R274

[michael_chien1]

I am using MPC5746C. Is there kind of register in MPC5746C? no function and data is able to store with resetting.

[michael_chien1]

update the status.

I found USPRG0 register. it look like I can use this register to store the data and not change after functionality reset.

But I can't find the definition in MPC5746C.h.

Would you advise how to access this register?

[davidtosenovjan]

Hi, The USPRG0 register is are provided for application and operating system use so yes, it can be used for this purpose.

Use the MC_ME module to enter the RESET mode (SW functional reset):

/* software reset */    
ME.MCTL.R = 0x00005AF0;
ME.MCTL.R = 0x0000A50F;