LPC1768FET100 datasheet by NXP Semiconductors

LPC1768FET100 Frequently Asked Questions (FAQs)

• What is the maximum clock frequency that can be achieved with the internal oscillator?
  The maximum clock frequency that can be achieved with the internal oscillator is 25 MHz. However, it's recommended to use an external crystal oscillator for frequencies above 12 MHz for better accuracy and stability.
• How do I configure the pin multiplexing to use the desired peripherals?
  The pin multiplexing can be configured using the PINSELx registers. Each peripheral function has a specific pin multiplexing setting, which can be found in the datasheet or the user manual. The PINSELx registers need to be programmed accordingly to enable the desired peripheral function on a specific pin.
• What is the maximum current that can be sourced or sunk by the GPIO pins?
  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.
• How do I implement a bootloader using the LPC1768FET100?
  A bootloader can be implemented using the ISP (In-System Programming) mode of the LPC1768FET100. The ISP mode allows the microcontroller to be programmed using a serial interface. The bootloader can be developed using the LPC1768FET100's ROM-based ISP driver and a communication protocol such as UART or USB.
• What is the power consumption of the LPC1768FET100 in different operating modes?
  The power consumption of the LPC1768FET100 varies depending on the operating mode. In active mode, the power consumption is around 100 mA at 25 MHz. In sleep mode, the power consumption is around 10 mA, and in deep sleep mode, it's around 1 mA. The exact power consumption can be found in the datasheet or the user manual.