K60P100M100SF2RM Datasheet, PDF (898/1809 Pages) Freescale Semiconductor, Inc – K60 Sub-Family Reference Manual

Introduction
SC[VREFST]
TRM
6 BITS
SC[VREFEN]
SC[MODE_LV]
2 BITS
1.75 V Regulator
1.75 V
BANDGAP
VDDA
REGULATION
BUFFER
DEDICATED
OUTPUT PIN
VREF_OUT
100nF
VSSA
Figure 37-1. Voltage reference block diagram
37.1.1 Overview
The Voltage Reference provides a buffered reference voltage with high output current for
use as an external reference. In addition, the buffered reference is available internally for
use with on chip peripherals such as ADCs and DACs. Refer to the chip configuration
chapter for a description of these options. The reference voltage is output on a dedicated
output pin when the VREF is enabled. The Voltage Reference output can be trimmed
with a resolution of 0.5mV by means of the TRM register TRIM[5:0] bitfield.
37.1.2 Features
The Voltage Reference has the following features:
• Programmable trim register with 0.5 mV steps, automatically loaded with factory
trimmed value upon reset
• Programmable buffer mode selection:
• Off
K60 Sub-Family Reference Manual, Rev. 6, Nov 2011
898
Freescale Semiconductor, Inc.