The recommended crystal oscillator frequency for the MSP53C391NI2D is between 3.5 MHz and 4.5 MHz, with a typical value of 4 MHz.
To configure the MSP53C391NI2D for low-power operation, set the LPM (Low Power Mode) bits in the Status Register (SR) to 1, and adjust the clock frequency and voltage regulator settings according to the application's requirements.
The maximum current that can be sourced or sunk by the MSP53C391NI2D's I/O pins is 4 mA per pin, with a total current limit of 100 mA for all I/O pins combined.
The MSP53C391NI2D has a built-in watchdog timer that can be enabled by setting the WDTCTL (Watchdog Timer Control) register. The watchdog timer can be configured to reset the device or generate an interrupt if the timer expires.
The maximum operating temperature range for the MSP53C391NI2D is -40°C to 85°C, with a storage temperature range of -40°C to 150°C.