MC9S12DG128BCFU datasheet by Freescale Semiconductor

MC9S12DG128BCFU Frequently Asked Questions (FAQs)

• What is the maximum operating frequency of the MC9S12DG128BCFU?
  The maximum operating frequency of the MC9S12DG128BCFU is 25 MHz, but it can be overclocked to 30 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 Generation Module (CGM) registers. The CGM module allows selection of the clock source, clock frequency, and clock mode. Refer to the MC9S12DG128BCFU reference manual for detailed information on CGM register settings.
• What is the maximum amount of current that can be sourced or sunk by the GPIO pins?
  The maximum amount of current that can be sourced or sunk by the GPIO pins is 25 mA per pin, with a total current limit of 100 mA for all GPIO pins combined.
• How do I implement a watchdog timer on the MC9S12DG128BCFU?
  The MC9S12DG128BCFU has a built-in Computer Operating Properly (COP) watchdog timer that can be enabled and configured using the COP control register. The COP timer can be set to timeout after a specified period of inactivity, and can be reset by writing to the COP control register.
• What is the minimum and maximum voltage rating for the MC9S12DG128BCFU?
  The minimum voltage rating for the MC9S12DG128BCFU is 2.7V, and the maximum voltage rating is 5.5V. Operating the device outside of this voltage range may cause damage or unpredictable behavior.