MC9S12XS128MAL datasheet by Freescale Semiconductor

MC9S12XS128MAL Frequently Asked Questions (FAQs)

• What is the maximum operating frequency of the MC9S12XS128MAL?
  The maximum operating frequency of the MC9S12XS128MAL 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) module. The CMU module allows you to select the clock source, divide the clock frequency, and enable or disable the clock output.
• 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?
  The MC9S12XS128MAL has a built-in Computer Operating Properly (COP) module that can be used as a watchdog timer. The COP module can be configured to generate a reset signal if the microcontroller fails to refresh the COP timer within a specified time period.
• What is the maximum amount of flash memory that can be programmed?
  The MC9S12XS128MAL has 128 KB of flash memory, but only 124 KB is available for user programming due to the reserved space for the boot loader and other system functions.