KEAZ128 Clock Problem

[fanziyu]

Mcu: s9keaz128amlh

Tool: S32 Design Studio for ARM Version 2018.R1

Problem1:What is wrong with my following calculation? I think it's 20Mhz core clock in the example. 

ICSFLLCLK = 8Mhz/256*1280 = 40Mhz;

Core/System Clock = ICSOUTCLK = ICSFLLCLK / BDIV = 20Mhz;   

Problem2:Which clock should i  use to calculate the time Program takes, Bus clock or core clock?

Because there's a lot of computation in my project, and I need to know how long it takes to run.

Thanks!

[jingpan · Accepted solution]

Hi @fanziyu ,

1. Yes, the core clock is 20Mhz. If you want core clock to be 40M, SIM_CLKDIV should bd 0x01000000.

jingpan_0-1634020456714.png

2. Core clock.

Regards,

Jing

[fanziyu]

the example code is right,I am too careless.Sorry for bothering!