Reverse Engineering Microcontroller STM8S105K6U3 Structure can help us to figure out the security fuse bit of MCU stm8s105k6 location, then we can crack mcu stm8s105k6 memory protective system and readout embedded firmware from MCU;
Single wire interface module (SWIM) and debug module (DM)
The single wire interface module and debug module permits non-intrusive, real-time in- circuit debugging and fast memory programming.
SWIM
Single wire interface module for direct access to the debug module and memory programming. The interface can be activated in all device operation modes to copy stm8s003f3 mcu flash memory content, The maximum data transmission speed is 145 bytes/ms.
Debug module
The non-intrusive debugging module features a performance close to a full-featured emulator. Beside memory and peripherals, also CPU operation can be monitored in real- time by means of shadow registers.
La structure du microcontrôleur d’ingénierie inverse STM8S105K6U3 peut nous aider à comprendre le bit de fusible de sécurité de l’emplacement du MCU stm8s105k6, puis nous pouvons craquer le système de protection de la mémoire mcu stm8s105k6 et lire le micrologiciel intégré du MCU
R/W to RAM and peripheral registers in real-time
R/W access to all resources by stalling the CPU
Breakpoints on all program-memory instructions (software breakpoints)
Two advanced breakpoints, 23 predefined configurations
unlock encrypted STM8S105K6U3 mcu and clone binary data of flash memory
Interrupt controller
Nested interrupts with three software priority levels,
32 interrupt vectors with hardware priority in the process of breaking microprocessor stm8s105k4 flash memory,
Up to 27 external interrupts on 6 vectors including TLI,
Trap and reset interrupts
Flash program and data EEPROM memory
8 Kbyte of Flash program single voltage Flash memory,
640 byte true data EEPROM,
User option byte area.