MC9S12XA256CAAR datasheet by Freescale Semiconductor

MC9S12XA256CAAR Frequently Asked Questions (FAQs)

• What is the maximum operating temperature range for this microcontroller?
  The MC9S12XA256CAAR can operate from -40°C to 125°C, but the recommended operating temperature range is -40°C to 105°C.
• How do I configure the clock settings for this microcontroller?
  The clock settings can be configured using the Clock Generation Module (CGM) registers. The CGM provides a flexible clock generation system that allows the user to select from various clock sources, including the internal oscillator, external oscillator, and PLL.
• What is the maximum frequency of the CPU and peripherals?
  The maximum frequency of the CPU is 25 MHz, and the maximum frequency of the peripherals is 50 MHz.
• How do I implement a watchdog timer in this microcontroller?
  The MC9S12XA256CAAR 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 maximum amount of flash memory that can be programmed?
  The MC9S12XA256CAAR has 256 KB of flash memory, and the maximum amount of flash memory that can be programmed is 248 KB, leaving 8 KB for the bootloader.