What memory type is the best for code storing?(SOC design)

[tavidu]

question about soc

the code of cpu core is stored at DRAM.
but as we know, DRAM has soft error(SE).
When SE occured, the chip will die.
So We can use ECC to correct 1 bit soft error of DRAM.
my question is :
Among SDR, DDR, DDR2, which one is more stable for code storage according to your SOC design experience.

 

[bigrice911]

question about soc

SDR may be better/

 

[power-twq]

Re: question about soc

These DRAM have same core and different shell,

I think there is no major difference between them.

you can choose any one of them.

the code of cpu core is stored at DRAM.
but as we know, DRAM has soft error(SE).
When SE occured, the chip will die.
So We can use ECC to correct 1 bit soft error of DRAM.
my question is :
Among SDR, DDR, DDR2, which one is more stable for code storage according to your SOC design experience.

 

[lijian_18]

question about soc

In general, good SDR DDR or DDR2 chips will handle ECC and error correction automatically. Vendor will guarantee the quality of these SDRAMs. We need not to concern about this.