The maximum clock frequency that can be used with the internal oscillator is 12 MHz. However, it's recommended to use a clock frequency of 10 MHz or lower to ensure reliable operation.
The pin multiplexing can be configured using the PINSELx registers. Each peripheral function has a specific pin assignment, and the PINSELx registers allow you to select which function is assigned to each pin. Refer to the datasheet and the user manual for more information.
The minimum voltage required for the ADC to operate correctly is 2.4 V. However, it's recommended to use a voltage of 2.7 V or higher to ensure accurate ADC conversions.
The LPC1114FN28/102 has several low-power modes, including Sleep, Deep Sleep, and Power-Down modes. These modes can be implemented using the Power Management Controller (PMC) and the System Control Register (SCR). Refer to the datasheet and the user manual for more information.
The maximum current that can be sourced or sunk by the GPIO pins is 4 mA. However, it's recommended to limit the current to 2 mA or less to ensure reliable operation and to prevent overheating.