The maximum clock frequency that can be used with the internal oscillator is 16 MHz, but it depends on the voltage and temperature range. Refer to the datasheet for more information on the oscillator frequency ranges.
To configure the WDT, you need to set the WDP bits in the WDT control register (WDT_CR) to select the timeout period, and then enable the WDT by setting the WDTE bit. Make sure to follow the correct sequence to avoid accidental resets.
No, the UART in asynchronous mode is limited to a maximum baud rate of 115200 bps. For higher baud rates, you need to use synchronous mode or an external UART module.
To enable the internal pull-up resistors, you need to set the corresponding bit in the port configuration register (PORTx_CR1) to '1'. Note that not all pins have internal pull-up resistors, so check the datasheet for specific pin capabilities.
The minimum voltage required for the microcontroller to operate in low-power mode (Halt or Low-Power Run mode) is 2.4 V. However, the voltage range for low-power mode operation depends on the specific mode and frequency, so refer to the datasheet for more information.
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