Microprocessor STM8S903F3M6 Embedded Firmware Extraction needs to break the protection over STM8S903F3 MCU security fuse bit, clone the flash code out from 8 bit microcontroller stm8s903f3;
The system window watchdog is based on a 7-bit downcounter that can be set as free running. It can be used as a watchdog to reset the device when a problem occurs. It is clocked from the APB clock (PCLK). It has an early warning interrupt capability and the counter can be frozen in debug mode.
This timer is dedicated to real-time operating systems, but could also be used as a standard down counter. It features:
A 24-bit down counter
Autoreload capability
Maskable system interrupt generation when the counter reaches
Programmable clock source (HCLK or HCLK/8) to copy protective stm8s103f3 microprocessor flash heximal file
The RTC and the 5 backup registers are supplied through a switch that takes power either on VDD supply when present or through the VBAT pin. The backup registers are five 32-bit registers used to store 20 bytes of user application data when VDD power is not present. They are not reset by a system or power reset, or when the device wakes up from Standby mode.
The RTC is an independent BCD timer/counter. Its main features are the following:
Calendar with subsecond, seconds, minutes, hours (12 or 24 format), week day, date, month, year, in BCD (binary-coded decimal) format.
Automatically correction for 28, 29 (leap year), 30, and 31 day of the
Programmable alarm with wake up from Stop and Standby mode when extract program from secured stm8s193k3 microcontroller
On-the-fly correction from 1 to 32767 RTC clock This can be used to synchronize it with a master clock.
Digital calibration circuit with 1 ppm resolution, to compensate for quartz crystal
2 anti-tamper detection pins with programmable The MCU can be woken up from Stop and Standby modes on tamper event detection.
Timestamp feature which can be used to save the calendar This function can triggered by an event on the timestamp pin, or by a tamper event. The MCU can be woken up from Stop and Standby modes on timestamp event detection.
