The maximum clock frequency for the P89LPC932A1FDH is 3.875 MHz, but it can be overclocked up to 4 MHz with some limitations.
The oscillator can be configured using the OSCCFG register. The register settings depend on the crystal frequency and the desired clock frequency. Refer to the application note AN10216 for more information.
The minimum voltage required for the P89LPC932A1FDH to operate is 2.4V, but it is recommended to use a minimum of 2.7V for reliable operation.
The watchdog timer can be enabled and configured using the WDTCON register. The watchdog timer can be used to reset the microcontroller in case of a software or hardware failure.
The maximum current that can be sourced or sunk by the I/O pins of the P89LPC932A1FDH is 20mA. However, it is recommended to limit the current to 10mA to ensure reliable operation.
