MC9S12XA512CAL datasheet by Freescale Semiconductor

MC9S12XA512CAL Frequently Asked Questions (FAQs)

• What is the maximum operating frequency of the MC9S12XA512CAL?
  The maximum operating frequency of the MC9S12XA512CAL is 50 MHz, but it can be overclocked to 60 MHz with careful consideration of power consumption and thermal management.
• How do I configure the internal clock source?
  The internal clock source can be configured using the Clock Monitor Unit (CMU) registers. The CMU allows selection of the clock source, clock frequency, and clock mode. Refer to the MC9S12XA512CAL reference manual for detailed information on CMU register settings.
• What is the maximum amount of current that can be sourced/sunk by the GPIO pins?
  The maximum amount of current that can be sourced by the GPIO pins is 20 mA, and the maximum amount of current that can be sunk is 25 mA. However, it's recommended to limit the current to 10 mA to ensure reliable operation.
• How do I implement a watchdog timer on the MC9S12XA512CAL?
  The MC9S12XA512CAL has a built-in Computer Operating Properly (COP) watchdog timer. The COP timer can be enabled and configured using the COP control registers. The COP timer can be used to reset the microcontroller in case of a software fault or hang-up.
• What is the minimum and maximum voltage rating for the MC9S12XA512CAL?
  The minimum voltage rating for the MC9S12XA512CAL is 2.7V, and the maximum voltage rating is 5.5V. Operating the microcontroller outside of this voltage range may cause damage or unreliable operation.