MCF51JM128EVLK datasheet by Freescale Semiconductor

MCF51JM128EVLK Frequently Asked Questions (FAQs)

• What is the maximum operating frequency of the MCF51JM128EVLK?
  The maximum operating frequency of the MCF51JM128EVLK is 50 MHz.
• How do I configure the clock source for the MCF51JM128EVLK?
  The clock source for the MCF51JM128EVLK can be configured using the System Integration Module (SIM) registers. The SIM_CLKDIV register controls the clock divider, and the SIM_SOPT1 register selects the clock source (e.g., internal oscillator, external oscillator, or PLL).
• What is the purpose of the Low-Voltage Detect (LVD) module in the MCF51JM128EVLK?
  The LVD module in the MCF51JM128EVLK is used to detect when the voltage supply falls below a certain threshold (e.g., 2.5V). This can be used to trigger a reset or interrupt to prevent the device from operating in an unstable voltage condition.
• How do I use the 16-bit Timer/Pulse-Width Modulator (TPM) module in the MCF51JM128EVLK?
  The TPM module in the MCF51JM128EVLK can be used to generate PWM signals, measure pulse widths, or count events. The TPM is configured using the TPM_SC, TPM_CNT, and TPM_MOD registers. The TPM can also be used in conjunction with the DMA module to transfer data.
• What is the maximum amount of current that can be sourced or sunk by the GPIO pins of the MCF51JM128EVLK?
  The maximum amount of current that can be sourced or sunk by the GPIO pins of the MCF51JM128EVLK is 25 mA. However, it is recommended to limit the current to 10 mA or less to ensure reliable operation.