MCF51CN128CLH datasheet by Freescale Semiconductor

MCF51CN128CLH Frequently Asked Questions (FAQs)

• What is the maximum clock frequency of the MCF51CN128CLH?
  The maximum clock frequency of the MCF51CN128CLH is 50 MHz.
• How do I configure the clock source for the MCF51CN128CLH?
  The clock source for the MCF51CN128CLH can be configured using the SYNR and REFS bits in the SMC1 register. The clock source can be set to either the internal oscillator, external oscillator, or the PLL clock.
• What is the purpose of the COP (Computer Operating Properly) timer in the MCF51CN128CLH?
  The COP timer is a watchdog timer that resets the microcontroller if it does not receive a refresh signal within a certain time period. This is used to prevent the microcontroller from getting stuck in an infinite loop or other abnormal operation.
• How do I use the ADC (Analog-to-Digital Converter) on the MCF51CN128CLH?
  The ADC on the MCF51CN128CLH can be used by configuring the ADCSC1 and ADCSC2 registers to select the analog input channel, conversion mode, and clock source. The ADC result can be read from the ADCRH and ADCRL registers.
• What is the maximum current that can be sourced or sunk by the GPIO pins on the MCF51CN128CLH?
  The maximum current that can be sourced or sunk by the GPIO pins on the MCF51CN128CLH is 25 mA.