[i]When using the download software provided by STC to download the user program, the system will automatically set the VRTRIM and IRTRIM registers according to the frequency set by the user.[/i] - stc8h datasheet, 7.4.4 Interpretation of high precision parameters in chip.
feature
[i]When using the download software provided by STC to download the user program, the system will automatically set the VRTRIM and IRTRIM registers according to the frequency set by the user.[/i] - stc8h datasheet, 7.4.4 Interpretation of high precision parameters in chip.
possible solution
Port the calibration routine from stcgal.