ST STM8S207K6 Locked Microcontroller Memory Breaking is a process to reverse engineering stm8s207k6 microcontroller structure and disable its protection and reset the status from locked to unlocked, copy embedded firmware from stm8s207k6 mcu flash content;
Write protection of Flash program memory and data EEPROM is provided to avoid unintentional overwriting of memory that could result from a user software malfunction.
There are two levels of write protection. The first level is known as MASS (memory access security system). MASS is always enabled and protects the main Flash program memory, data EEPROM and option bytes and we have to use technique to reverse mcu stm8s005c6 flash memory code.
ST STM8S207K6 gesperrter Mikrocontroller-Speicherbruch ist ein Prozess zum Reverse Engineering von STM8S207K6-Mikrocontrollern
Strukturieren und deaktivieren Sie den Schutz und setzen Sie den Status von gesperrt auf entsperrt zurück, kopieren Sie die eingebettete Firmware aus dem MCU-Flash-Inhalt STM8S207K6
To perform in-application programming (IAP), this write protection can be removed by writing a MASS key sequence in a control register. This allows the application to write to data EEPROM, modify the contents of main program memory or the device option bytes.
A second level of write protection, can be enabled to further protect a specific area of memory known as UBC (user boot code).
The size of the UBC is programmable through the UBC option byte, in increments of 1 page (512 bytes) by programming the UBC option byte in ICP mode when break mcu stm8s103f3 flash memory.
This divides the program memory into two areas:
Main program memory: Up to 128 Kbytes minus UBC
User-specific boot code (UBC): Configurable up to 128 Kbytes
The UBC area remains write-protected during in-application programming. This means that the MASS keys do not unlock the UBC area. It protects the memory used to store the boot program, specific code libraries, reset and interrupt vectors, the reset routine and usually the IAP and communication routines.