AnsweredAssumed Answered

LPC55S69 : flash prefetch bit is dropped after PowerDown

Question asked by Eugene Hiihtaja on Jan 30, 2020
Latest reply on Feb 7, 2020 by Eugene Hiihtaja

Hello !

 

I'm setting Flash prefetch bit for accelerate performance.

Testing show that it set to 0 while PowerDown mode.

 

Is this true ?

 

Before :

+SYSCON->FMCCR 0xB03A  -> 150Mhz, prefetch ON

 

After:
-SYSCON->FMCCR 0x101A -> 12Mhz, prefetch OFF

 

Setting on FMCCCR in BOARD_BootClockFRO12M(); 

done in correct way.

 

Regards,

Eugene

Outcomes