pic32mx320f032h Microchip Technology Inc., pic32mx320f032h Datasheet - Page 99

• Manufacturer Part Number: pic32mx320f032h
• Description: 64/100-pin General Purpose And Usb 32-bit Flash Microcontrollers
• Manufacturer: Microchip Technology Inc.

24.0
The CV
vides a selectable reference voltage. Although its pri-
mary purpose is to provide a reference for the analog
comparators, it also may be used independently of
them.
FIGURE 24-1:
© 2009 Microchip Technology Inc.
Note:
REF
COMPARATOR VOLTAGE
REFERENCE (CV
is a 16-tap, resistor ladder network that pro-
reference source. Refer to the “PIC32MX
description of this peripheral.
This data sheet summarizes the features of
the PIC32MX3XX/4XX family of devices. It
is not intended to be a comprehensive
Family Reference Manual” Section 20.
“Comparator
(CV
The manual is available from the Microchip
web site (www.Microchip.com/PIC32).
V
AV
REF
V
AV
CVREN
REF
DD
REF
CVRR
+
SS
-
)”
COMPARATOR VOLTAGE REFERENCE BLOCK DIAGRAM
CVRSS = 0
CVRSS = 1
(DS61109) for a detailed
Voltage
REF
CVRSS = 1
CVRSS = 0
16 Steps
)
Reference
8R
R
R
R
R
R
R
R
Preliminary
8R
A block diagram of the module is shown in Figure 24-1.
The resistor ladder is segmented to provide two ranges
of voltage reference values and has a power-down func-
tion to conserve power when the reference is not being
used. The module’s supply reference can be provided
from either device V
ence. The CV
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
CVR3:CVR0
PIC32MX3XX/4XX
REF
CVRCON<CVROE-
output is available for the comparators
DD
/V
SS
or an external voltage refer-
CV
CV
REF
DS61143F-page 97
REF
OUT