The maximum clock frequency that can be used with the internal oscillator is 48 MHz, but it's recommended to use a lower frequency to ensure stability and reduce power consumption.
The pin muxing can be configured using the SIM_SCGC5 and PORTx_PCRn registers. Refer to the device's reference manual and the pin muxing chapter for more information.
The minimum voltage required for the device to operate is 1.71V, but it's recommended to use a voltage between 1.8V and 3.6V for optimal performance.
The device has several low-power modes, including STOP, VLPR, and VLPW. These modes can be entered using the SMC_PMCTRL register. Refer to the device's reference manual for more information on how to use these modes.
The maximum amount of current that can be sourced or sunk by a GPIO pin is 4mA, but it's recommended to limit the current to 2mA to ensure reliable operation.