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S08RN Trim values

Question asked by Jochen Gerster Employee on Nov 20, 2017
Latest reply on Nov 27, 2017 by vicentegomez



I found following information about S08RN trimming but I have some question were I'm not 100% sure and if my understanding is correct:

1) Factory reserved memory location is not accessible (read/write) by user?

2) The conventional location at 0xFF6E is blank 0xFFs when part is shipped?

3) If conventional location 0xFF6E is used the user SW must read it and write it to ICS_C3?


"For S08RN, All MCU devices are factory programmed with a trim value in a factory reserved memory location. This value is uploaded to the ICS_C3 register and ICS_C4 register during any reset initialization. That means you don't need to initialize ICS_C3 in your software.

However, if you want to use other trim values, the conventional location is 0xFF6E-0xFF6F, P&E tools will program new trim value in those addresses.

By the way, the RN60 factory trim value is 39.0625 kHz"


Thanks for your help

best regards