The block diagram shown on this slide represents a fully loaded Kinetis KL4. The KL series ranges from 8K to 256K of Flash with a Flash/RAM ratio of 8/1 across all devices with a broad peripheral set that includes low power clock options, multiple timers, ADC and DAC options, display options, as well as full speed and low speed USB. The important thing here is the color coding; the peripherals coded in different shades of green are able to operate even when the main clock is off, allowing smart functions to take place with very little power consumption.