LPC11U14FBD48/201 datasheet by NXP Semiconductors

LPC11U14FBD48/201 Frequently Asked Questions (FAQs)

• What is the maximum clock frequency that can be used with the internal oscillator?
  The maximum clock frequency that can be used with the internal oscillator is 12 MHz. However, it's recommended to use a crystal oscillator for frequencies above 4 MHz for better accuracy and stability.
• How do I configure the pin multiplexing to use the I2C interface?
  To configure the pin multiplexing for I2C, you need to set the PINSEL0 register to select the I2C function for the desired pins. For example, to use P0.27 as SCL and P0.28 as SDA, set PINSEL0[27:27] = 0x02 and PINSEL0[28:28] = 0x02.
• What is the minimum voltage required for the ADC to operate correctly?
  The minimum voltage required for the ADC to operate correctly is 2.4V. However, it's recommended to use a voltage of at least 2.7V for optimal performance.
• How do I enable the brown-out detection (BOD) feature?
  To enable the BOD feature, set the BODCTRL register to 0x01. This will enable the BOD and reset the microcontroller if the voltage drops below the threshold voltage (which can be set using the BODVOLTAGE register).
• What is the maximum current that can be sourced or sunk by a GPIO pin?
  The maximum current that can be sourced or sunk by a GPIO pin is 4mA. However, it's recommended to limit the current to 2mA to ensure reliable operation.