The maximum clock frequency for the LPC2194 is 60 MHz, but it can be overclocked up to 70 MHz with some limitations.
The pin multiplexing on the LPC2194 can be configured using the PINSEL registers. Each peripheral function has a corresponding PINSEL register that determines which pins are used for that function.
The maximum amount of current that can be sourced or sunk by the GPIO pins on the LPC2194 is 4 mA. However, it's recommended to limit the current to 2 mA to ensure reliable operation.
The ADC on the LPC2194 can be used by configuring the ADC registers, selecting the analog input channel, and starting the conversion. The ADC result can be read from the ADCR register.
The bootloader on the LPC2194 is used to load the application code into the flash memory. It can also be used to update the firmware in the field.