The maximum clock frequency for the LPC2148FBD64 is 60 MHz, but it can be overclocked up to 70 MHz with some limitations. However, it's recommended to follow the datasheet specifications to ensure reliable operation.
The pin multiplexing on the LPC2148FBD64 is configured using the PINSELx registers. Each peripheral function has a corresponding PINSELx register that determines which pins are used for that function. Consult the datasheet and user manual for specific register settings and pin assignments.
The minimum voltage required for the LPC2148FBD64 to operate is 2.4V, but it's recommended to use a voltage between 2.7V and 3.6V for optimal performance and reliability.
The ADC on the LPC2148FBD64 is a 10-bit successive approximation ADC. To use it, configure the ADC clock, select the ADC channel, and start the conversion. The ADC result can be read from the AD0DR register. Consult the datasheet and user manual for specific register settings and conversion sequences.
Yes, the LPC2148FBD64 can be used with an external crystal oscillator. The external crystal oscillator can be connected to the XTAL1 and XTAL2 pins, and the PLL can be configured to use the external clock source. Consult the datasheet and user manual for specific configuration and setup requirements.