When reset, the software reset in which the CBS  (Config0 ) is not loaded into the BS (ISPCTL ) is used. Thus, the user needs to use MCU Reset or CPU Reset.
Reset the entire chip, but retain the BS setting.
Function call: NVIC_SystemReset();
Reset only the CPU and Flash controller, but retain the BS setting.
Function call: SYS_ResetCPU();
What software reset should be used when switching from APROM to LDROM to execute program updates, or switching from LDRO
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