MC908LJ12CFBE datasheet by Freescale Semiconductor

MC908LJ12CFBE Frequently Asked Questions (FAQs)

• What is the maximum operating temperature range for this microcontroller?
  The MC908LJ12CFBE can operate from -40°C to 105°C, but it's recommended to operate within -20°C to 85°C for optimal performance.
• How do I configure the clock source for the MCU?
  The clock source can be configured using the Clock Generator Module (CGM) registers. You can choose between internal clock sources (e.g., internal RC oscillator) or external clock sources (e.g., crystal oscillator). Refer to the CGM chapter in the datasheet for more information.
• What is the maximum current consumption of the MCU?
  The maximum current consumption of the MC908LJ12CFBE depends on the operating mode and clock frequency. According to the datasheet, the maximum current consumption is around 25mA at 4MHz clock frequency and 3.3V supply voltage.
• How do I program the flash memory of the MCU?
  The flash memory of the MC908LJ12CFBE can be programmed using the Serial Monitor Interface (SMI) or the Background Debug Mode (BDM) interface. You can use a programming tool like the Freescale Codewarrior or a third-party programmer to program the flash memory.
• What is the purpose of the COP (Computer Operating Properly) watchdog timer?
  The COP watchdog timer is a safety feature that resets the MCU if it fails to periodically reset the COP timer. This ensures that the MCU is operating properly and prevents it from getting stuck in an infinite loop or malfunctioning due to software errors.