Information

Chapter 33
Voltage Reference (VREFV1)
33.1 Introduction
NOTE
For the chip-specific implementation details of this module's
instances see the chip configuration chapter.
The Voltage Reference(VREF) is intended to supply an accurate voltage output that can
be trimmed in 0.5 mV steps. The VREF can be used in applications to provide a reference
voltage to external devices or used internally as a reference to analog peripherals such as
the ADC, DAC, or CMP. The voltage reference has three operating modes that provide
different levels of supply rejection and power consumption..
The following figure is a block diagram of the Voltage Reference.
K20 Sub-Family Reference Manual, Rev. 2, Feb 2012
Freescale Semiconductor, Inc. 661