PIC32MX210F016B-I/SO Microchip Technology, PIC32MX210F016B-I/SO Datasheet - Page 215

• Manufacturer Part Number: PIC32MX210F016B-I/SO
• Description: PIC32, 16KB Flash, 4KB RAM, 40 MHz, USB, CTMU, 4 DMA 28 SOIC .300in TUBE
• Manufacturer: Microchip Technology

23.0
FIGURE 23-1:
© 2011-2012 Microchip Technology Inc.
Note 1: This data sheet summarizes the features
2: Some registers and associated bits
COMPARATOR VOLTAGE
REFERENCE (CV
of the PIC32MX1XX/2XX family of
devices. It is not intended to be a
comprehensive reference source. To
complement the information in this data
sheet, refer to Section 20. “Comparator
Voltage Reference (CV
in the “PIC32 Family Reference Manual”,
which is available from the Microchip web
site (www.microchip.com/PIC32).
described in this section may not be
available on all devices. Refer to
Section 4.0 “Memory Organization”
this data sheet for device-specific register
and bit information.
V
AV
REF
V
AV
CVREN
DD
REF
CVRR
+
SS
-
COMPARATOR VOLTAGE REFERENCE BLOCK DIAGRAM
CVRSS = 0
CVRSS = 1
REF
CVRSS = 1
CVRSS = 0
REF
)
16 Steps
)” (DS61109)
8R
R
R
R
R
R
R
R
CV
Preliminary
in
RSRC
8R
The CV
that provides a selectable reference voltage. Although
its primary purpose is to provide a reference for the
analog comparators, it also may be used independently
of them.
A block diagram of the module is illustrated in
Figure
provide two ranges of voltage reference values and has
a power-down function to conserve power when the
reference is not being used. The module’s supply refer-
ence can be provided from either device V
external voltage reference. The CV
able for the comparators and typically available for pin
output.
The comparator voltage reference has the following
features:
• High and low range selection
• Sixteen output levels available for each range
• Internally connected to comparators to conserve
• Output can be connected to a pin
device pins
23-1. The resistor ladder is segmented to
REF
CVR<3:0>
module is a 16-tap, resistor ladder network
PIC32MX1XX/2XX
CVRCON<CVROE>
CV
REF
CV
REFOUT
REF
DS61168D-page 215
output is avail-
DD
/V
SS
or an