MKL15Z128VLK4 datasheet by Freescale Semiconductor

MKL15Z128VLK4 Frequently Asked Questions (FAQs)

• What is the maximum clock frequency of the MKL15Z128VLK4?
  The maximum clock frequency of the MKL15Z128VLK4 is 48 MHz, which can be achieved using an external crystal oscillator or a high-frequency internal clock source.
• How do I configure the MKL15Z128VLK4 to use an external crystal oscillator?
  To configure the MKL15Z128VLK4 to use an external crystal oscillator, you need to set the CLKOSRC_SEL bits in the SIM_SOPT1 register to select the external clock source, and then configure the oscillator pads (OSC0 and OSC1) as inputs. You may also need to add external components such as capacitors and resistors to the oscillator circuit.
• What is the maximum amount of current that the MKL15Z128VLK4 can source or sink on its GPIO pins?
  The maximum amount of current that the MKL15Z128VLK4 can source or sink on its GPIO pins is 4 mA per pin, with a total current limit of 100 mA for all GPIO pins combined.
• How do I use the MKL15Z128VLK4's low-power modes to reduce power consumption?
  The MKL15Z128VLK4 has several low-power modes, including Stop, VLPR, and VLPW. To use these modes, you need to set the corresponding bits in the SMC_PMCTRL register and configure the system clock to a low-frequency mode. You can also use the MCU's power gating feature to turn off power to individual peripherals when not in use.
• Can I use the MKL15Z128VLK4 with an external memory device?
  Yes, the MKL15Z128VLK4 has an external memory interface that allows it to access external memory devices such as flash memory or SRAM. You need to configure the MCU's external memory interface by setting the correct pins as outputs and configuring the memory timing parameters in the SIM_SOPT2 register.