MC9S08LL16CLH datasheet by Freescale Semiconductor

MC9S08LL16CLH Frequently Asked Questions (FAQs)

• What is the maximum clock frequency that can be used with the internal oscillator?
  The maximum clock frequency that can be used with the internal oscillator is 20 MHz.
• How do I configure the watchdog timer?
  The watchdog timer can be configured using the WDTCSR register. Set the WDTS bit to enable the watchdog timer, and set the WDTCLK bit to select the clock source. The watchdog timer timeout period can be set using the WDTPS bits.
• What is the purpose of the COP (Computer Operating Properly) module?
  The COP module is a watchdog timer that monitors the operation of the microcontroller and resets it if it fails to periodically refresh the COP timer. This ensures that the microcontroller is operating properly and prevents it from getting stuck in an infinite loop.
• How do I use the SCI (Serial Communication Interface) module?
  The SCI module can be used for asynchronous serial communication. Configure the SCI module by setting the baud rate, data bits, stop bits, and parity using the SCI registers. Then, use the SCI transmit and receive registers to send and receive data.
• What is the purpose of the reset pin?
  The reset pin is an active-low input that resets the microcontroller when it is driven low. The reset pin can be used to reset the microcontroller externally, such as when a power-on reset is required.