MK20DX64VLH7 datasheet by Freescale Semiconductor

MK20DX64VLH7 Frequently Asked Questions (FAQs)

• What is the maximum operating frequency of the MK20DX64VLH7?
  The maximum operating frequency of the MK20DX64VLH7 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 various power modes (RUN, WAIT, STOP, VLPS) in the MK20DX64VLH7?
  The power modes in the MK20DX64VLH7 are used to reduce power consumption when the device is not actively executing code. RUN mode is the normal operating mode, WAIT mode reduces power consumption by stopping the CPU clock, STOP mode reduces power consumption further by stopping the system clock, and VLPS (Very Low Power Stop) mode reduces power consumption to a minimum by stopping the system clock and disabling most peripherals.
• How do I use the DMA (Direct Memory Access) controller in the MK20DX64VLH7?
  The DMA controller in the MK20DX64VLH7 can be used to transfer data between peripherals and memory without CPU intervention. You need to configure the DMA channel, set the source and destination addresses, and enable the DMA transfer. The DMA controller will then transfer the data automatically.
• What is the maximum amount of current that can be sourced/sunk by the GPIO pins?
  The maximum amount of current that can be sourced by the GPIO pins is 4 mA, and the maximum amount of current that can be sunk is 8 mA. However, it's recommended to limit the current to 2 mA for sourcing and 4 mA for sinking to ensure reliable operation.