LPC1347FHN33,551 datasheet by NXP Semiconductors

LPC1347FHN33,551 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 72 MHz. However, it's recommended to use a clock frequency of 48 MHz or lower to ensure reliable operation.
• 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 2.7V or higher to ensure accurate ADC conversions.
• 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 feature and allow the microcontroller to reset when the voltage drops below the programmed threshold.
• 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 or less to ensure reliable operation.