How to configurate the flash optimization of MPC5646C

[Chenlong]

I am using MPC5646C with clock 120MHz, and there are lots of task to excute in this cpu. I want to configure the flash optimization  to make MPC5646C run faster. Can you tell me how to do it?

[davidtosenovjan · Accepted solution]

Hi, if you are using CodeWarrior, flash optimization is included in the file __ppc_eabi_init.c.

PFCR0 register contains setting of particular number of wait states according datasheet (please check whether it fits to recommended values):

In principle it is quite well described in AN2865, section 25, description for MPC56xxB/P/S

http://www.nxp.com/files/32bit/doc/app_note/AN2865.pdf 

Also MPC5646C Microcontroller Reference Manual, Rev. 5 has chapter "Performance Optimization" that is quite well described on this device.

Hope it helps

[Chenlong]

Thanks very much, your relply is very timely and helpful. ^_^