MK20DX128VLH7 datasheet by Freescale Semiconductor

MK20DX128VLH7 Frequently Asked Questions (FAQs)

• What is the maximum operating frequency of the MK20DX128VLH7?
  The maximum operating frequency of the MK20DX128VLH7 is 50 MHz, but it can be overclocked to 60 MHz with reduced voltage and temperature ranges.
• How do I configure the internal clock source?
  The internal clock source can be configured using the MCG (Multipurpose Clock Generator) module. The MCG module allows you to select the clock source, configure the clock frequency, and enable/disable the clock output.
• What is the purpose of the VLLS (Very Low Leakage Stop) mode?
  The VLLS mode is a low-power mode that reduces power consumption to a minimum while still allowing the device to wake up quickly in response to an interrupt. It is useful for battery-powered applications where power consumption needs to be minimized.
• How do I use the DMA (Direct Memory Access) controller?
  The DMA controller can be used to transfer data between peripherals and memory without involving the CPU. You need to configure the DMA channel, set the source and destination addresses, and enable the DMA transfer. The DMA controller will then handle the data transfer automatically.
• What is the difference between the various low-power modes (LLS, VLLS, etc.)?
  The different low-power modes (LLS, VLLS, etc.) offer varying levels of power reduction and wake-up times. LLS (Low Leakage Stop) mode reduces power consumption while still allowing the device to wake up quickly, while VLLS mode reduces power consumption even further but requires a longer wake-up time. The choice of low-power mode depends on the specific application requirements.