PIC18F44J50-I Datasheet, PDF (391/562 Pages) Microchip Technology – 28/44-Pin, Low-Power, High-Performance USB Microcontrollers

PIC18F46J50 FAMILY
24.0 COMPARATOR VOLTAGE
REFERENCE MODULE
The comparator voltage reference is a 16-tap resistor
ladder network that provides a selectable reference
voltage. Although its primary purpose is to provide a
reference for the analog comparators, it may also be
used independently of them.
Figure 24-1 provides a block diagram of the module.
The resistor ladder is segmented to provide two ranges
of CVREF values and has a power-down function to
conserve power when the reference is not being used.
The module’s supply reference is provided by VDD/VSS.
FIGURE 24-1:
COMPARATOR VOLTAGE REFERENCE BLOCK DIAGRAM
VDD
CVREN
CVRR
8R
R
R
R
R
16 Steps
R
R
R
CVR<3:0>
CVREF
8R
 2011 Microchip Technology Inc.
DS39931D-page 391