PIC24FJ128GB MICROCHIP [Microchip Technology], PIC24FJ128GB Datasheet - Page 265

• Manufacturer Part Number: PIC24FJ128GB
• Description: 64/80/100-Pin, 16-Bit Flash Microcontrollers with USB On-The-Go (OTG)
• Manufacturer: MICROCHIP [Microchip Technology]

23.0
23.1
The voltage reference module is controlled through the
CVRCON register (Register 23-1). The comparator
voltage reference provides two ranges of output
FIGURE 23-1:
© 2008 Microchip Technology Inc.
Note:
COMPARATOR VOLTAGE
REFERENCE
Configuring the Comparator
Voltage Reference
This data sheet summarizes the features
of this group of PIC24F devices. It is not
intended to be a comprehensive reference
source. For more information, refer to the
“PIC24F
”Section 20. Comparator Voltage
Reference Module” (DS39709).
CVRR
V
AV
CVREN
V
REF
REF
DD
Family
COMPARATOR VOLTAGE REFERENCE BLOCK DIAGRAM
+
-
CVRSS = 0
CVRSS = 1
Reference
CVRSS = 1
CVRSS = 0
16 Steps
AV
SS
Manual”,
PIC24FJ256GB110 FAMILY
Preliminary
8R
R
R
R
R
R
R
R
voltage, each with 16 distinct levels. The range to be
used is selected by the CVRR bit (CVRCON<5>). The
primary difference between the ranges is the size of the
steps
(CVR3:CVR0), with one range offering finer resolution.
The comparator reference supply voltage can come
from either V
V
bit (CVRCON<4>).
The settling time of the comparator voltage reference
must be considered when changing the CV
output.
8R
REF
-. The voltage source is selected by the CVRSS
selected
CVR3:CVR0
DD
and V
by
SS
the
, or the external V
CV
CV
REF
REF
DS39897B-page 263
Selection
REF
+ and
REF
bits