STR912FAZ46H6 datasheet by STMicroelectronics

STR912FAZ46H6 Frequently Asked Questions (FAQs)

• What is the maximum clock frequency that can be used with the internal oscillator?
  The maximum clock frequency that can be used with the internal oscillator is 32 MHz. However, it's recommended to use a clock frequency of 24 MHz or lower to ensure reliable operation.
• How do I configure the watchdog timer?
  The watchdog timer can be configured using the WWDG_CR register. You need to set the WWDG_CR_WDGA bit to enable the watchdog timer, and then set the WWDG_CR_T bit to set the timeout period. The timeout period can be set to 1.5, 7.5, 15, 30, 60, 120, or 250 ms.
• What is the maximum current that can be sourced or sunk by the GPIO pins?
  The maximum current that can be sourced or sunk by the GPIO pins is 20 mA. However, it's recommended to limit the current to 10 mA or less to ensure reliable operation.
• How do I use the ADC converter?
  The ADC converter can be used by configuring the ADC_CSR register. You need to set the ADC_CSR_ADON bit to enable the ADC, and then set the ADC_CSR_CH bit to select the channel. You can then read the ADC conversion result from the ADC_DR register.
• What is the purpose of the BOR (Brown-Out Reset) circuit?
  The BOR circuit is used to reset the microcontroller when the supply voltage falls below a certain threshold (typically 1.9 V). This helps to prevent the microcontroller from operating erratically or unpredictably during power-on or power-down sequences.