User Manual
301
Rev. 1.1
2019-03-18
TLE984xQX
Microcontroller with LIN and Power Switches for Automotive Applications
Memory Control Unit
content due to the hardware protection scheme. In such a case, the BootROM based protection feature would
recognize in firmware the protection settings and stop the routine providing a proper fail indication to the user
code.
The second firmware based protection feature is instead needed to make the read protection mechanism
provided by hardware effective. In fact, the feature for code download could be used for hacking even if the
read protection is set on a region (but not the write protection). It would then be possible to read out the
code/data by downloading a proper code into the same region. In fact, according to the hardware protection
scheme, a code running from a selected region can always address itself. So, the Firmware will block all the
boot options such that it is not possible to load and execute any external code, but only to execute user code
starting at address pointed by the standard reset handler routine address stored at 11000004
H
.