LPC2138FHN64/01 datasheet by NXP Semiconductors

LPC2138FHN64/01 Frequently Asked Questions (FAQs)

• What is the maximum clock frequency that can be used with the LPC2138FHN64/01?
  The maximum clock frequency is 60 MHz, but it can be overclocked up to 70 MHz with some limitations. However, it's not recommended to exceed the specified maximum frequency to ensure reliable operation.
• How do I configure the pin multiplexing on the LPC2138FHN64/01?
  The pin multiplexing on the LPC2138FHN64/01 is configured using the PINSEL registers. Each peripheral function has a corresponding PINSEL register that determines which pins are used for that function. Consult the user manual and the datasheet for specific register settings and pin assignments.
• What is the minimum voltage required for the LPC2138FHN64/01 to operate?
  The minimum voltage required for the LPC2138FHN64/01 to operate is 2.4V, but it's recommended to use a voltage regulator to maintain a stable 3.3V supply for optimal performance and reliability.
• How do I use the ADC on the LPC2138FHN64/01?
  The ADC on the LPC2138FHN64/01 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 user manual and the datasheet for specific register settings and conversion sequences.
• Can I use the LPC2138FHN64/01 with an external crystal oscillator?
  Yes, the LPC2138FHN64/01 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 user manual and the datasheet for specific configuration and setup requirements.