The maximum clock frequency of the STM8S103F3P3 is 16 MHz, but it can be overclocked to 24 MHz with a reduced voltage supply.
The clock source can be configured using the Clock Security System (CSS) and the Clock Control Register (CKR). The internal RC oscillator can be used as the clock source, or an external clock source can be used.
The NPOR (Number of Pages in One Row) and NPER (Number of Pages per Row) bits are used to configure the Flash memory organization. NPOR defines the number of pages in a row, and NPER defines the number of rows in the Flash memory.
A delay function can be implemented using a software loop or by using the timer peripheral. The timer peripheral can be configured to generate a delay using the timer counter and the clock frequency.
The BOR feature is used to reset the microcontroller when the voltage supply drops below a certain threshold. This helps to prevent the microcontroller from operating erratically or unpredictably during power-on or power-down sequences.