P89LPC954FA,529 datasheet by NXP Semiconductors

P89LPC954FA,529 Frequently Asked Questions (FAQs)

• What is the maximum clock frequency that can be used with the P89LPC954FA,529?
  The maximum clock frequency for the P89LPC954FA,529 is 12 MHz, but it can be overclocked up to 18 MHz with some limitations.
• How do I configure the oscillator for the P89LPC954FA,529?
  The oscillator can be configured using the OSCCFG register. The oscillator frequency can be set to either 12 MHz or 18 MHz, and the oscillator mode can be set to either internal or external.
• What is the purpose of the watchdog timer in the P89LPC954FA,529?
  The watchdog timer is used to reset the microcontroller if it becomes stuck in an infinite loop or if there is a software fault. It can be enabled or disabled using the WDTE bit in the WDTMOD register.
• How do I use the UART in the P89LPC954FA,529?
  The UART can be used for serial communication. The UART is configured using the UART registers, and the baud rate can be set using the UARTBSEL and UARTBREG registers.
• What is the maximum current that can be sourced or sunk by the I/O pins of the P89LPC954FA,529?
  The maximum current that can be sourced or sunk by the I/O pins is 20 mA. However, the total current sourced or sunk by all I/O pins should not exceed 100 mA.