Crack ATMEGA48PA Locked Microcontroller Flash fuse bit, the tamper resistance of microprocessor atmega48pa will be broken, then readout embedded binary file from MCU atmega48pa flash memory;
However, if the Analog Comparator is set up to use the Internal Voltage Reference as input, the Analog Comparator should be disabled in all sleep modes. Otherwise, the Internal Voltage Reference will be enabled, independent of sleep mode.
If the Brown-out Detector is not needed in the application, this module should be turned off. If the Brown-out Detector is enabled by the BODEN Fuse when copy atmega48v secured mcu flash code, it will be enabled in all sleep modes, and hence, always consume power. In the deeper sleep modes, this will contribute significantly to the total current consumption.
The Internal Voltage Reference will be enabled when needed by the Brown-out Detector, the Analog Comparator or the ADC. If these modules are disabled as described in the sections above, the internal voltage reference will be disabled and it will not be consuming power.
When turned on again, the user must allow the reference to start up before the output is used by replicating atmega48p mcu flash code. If the reference is kept on in sleep mode, the output can be used immediately.