SRAM_CE and UCE

[Jamber_H]

Hi

I enabled SRAM_UCE and disabled SRAM_CE in FCCU, and set the error reaction of SRAM_UCE as Long Reset, shown in Fig.1.

At running time, I inject a SRAM_UCE and MCU reset, shown in Fig.2.

After reset, I read the FCCU Fault Flag, but there are 3 Flags SRAM_CE，SRAM_UCE and MachineCheckIndication, shown in Fig.3.

So why SRAM_CE and MachineCheckIndication be asserted while I only inject a SRAM_UCE error?

I tried Flash_UCE, only Flash_UCE is asserted after reset

 

 

[petervlna]

Hello,

I hope you are clearing FCCU NCFSx registers in initialization phase of device.

I did some tests and here is the result after Uncorrectable error injection:

I see set NCF14, NCF15 + some other like SWT but thats because of my test SW.

I am not sure, but I expect that when you have multibit error it will report also single bit with it.

I need to check this internally.

I will feedback you ASAP.

Best regards,

Peter

[Jamber_H]

Hi Peter,

Thank you for your test and reply. Yes, I clear the FCCU in initilization phase, but before that I record the FCCU error Flag to determin the reset reason, because the FCCU is not reset when a Short or Long reset occured on MCU.

 

Best regards

Jamber