The maximum clock frequency for the P89LPC936FA is 12 MHz, but it can be overclocked up to 18 MHz with some limitations.
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.
The watchdog timer is used to reset the microcontroller if it becomes stuck in an infinite loop or if it fails to respond within a certain time period. This helps to prevent the system from becoming unresponsive.
The UART in the P89LPC936FA can be used for serial communication. The UART is configured using the UART registers, and the baud rate can be set using the UART_BAUD register.
The maximum current that can be sourced or sunk by the GPIO pins of the P89LPC936FA is 20 mA.
P89LPC936FA datasheet
by NXP Semiconductors
Findchips
