SW functional reset execution time of MPC5745B

cancel
Showing results for 
Show  only  | Search instead for 
Did you mean: 

SW functional reset execution time of MPC5745B

774 Views
shijie_zheng
Contributor III

Hi,

I want to trigger the MCU Functional Long Reset with the following statement:

/* software reset */   

ME.MCTL.R = 0x00005AF0;

ME.MCTL.R = 0x0000A50F;

The Reset action was executed successfully,but, I found that it took more than 5 seconds for the CPU restart again,

I don't know what caused it to take so long time. Anybody had a problem like this?

Is there a way to make the CPU reset  faster?I hope to complete the reset in 2 seconds.

Labels (1)
Tags (1)
0 Kudos
Reply
2 Replies

709 Views
lukaszadrapa
NXP TechSupport
NXP TechSupport

Hi,

it doesn't sound realistic, the reset sequence is much shorter:

pastedImage_1.png

What is connected to reset pin?

Regards,

Lukas

0 Kudos
Reply

709 Views
shijie_zheng
Contributor III

Hi Lukas,

Thank you for your answer,I use the current consumed to watch if the CPU is restarted finish.

I have ran the time test again,In fact, the CPU has completed the restart quickly,

Because the peripheral circuit power supply is not completed, so CPU Restart feels slow.

Thanks for your explanation.

0 Kudos
Reply