Error occurrence conditions
1. When the microcontroller has "write-prohibit" security set, the PROGRAM command, or the ERASE or EPR command that specifies a part of the flash memory is executed.
→If the EPR command targets the entire flash memory area, the entire area is erased and then the configuration setting is cleared, so reprogramming is possible. (The security setting after reprogramming depends on the YDD file used during reprogramming.)
2. When the microcontroller has "erase-prohibit" security set, the ERASE command, PROGRAM command, or EPR command is executed.
→There is no workaround (erasing or programming with a programmer is impossible.)
※If reprogramming is required in the programming process, do not set the security setting to "erase-prohibit" when programming.
3. When the microcontroller has "read-prohibit" security set, the COPY command is executed.
→There is no workaround (data cannot be read with a programmer.)
※The READ command is a resend verify method (verify data is sent from the programmer and checked by the microcontroller), so data is not read from the microcontroller, so it can be executed.