AC164139 Microchip Technology, AC164139 Datasheet - Page 341

• Manufacturer Part Number: AC164139
• Description: Graphics Display Prototype Board Graphics
• Manufacturer: Microchip Technology

Specifications of AC164139

• Main Purpose: LCD Development
• Embedded: No
• Utilized Ic / Part: PICtail™ Plus Board
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Secondary Attributes: -
• Primary Attributes: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

25.0
FIGURE 25-1:
 2010 Microchip Technology Inc.
Note:
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 19. “Comparator Module”
(DS39710). The information in this data
sheet supersedes the information in the
FRM.
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”,
PIC24FJ256DA210 FAMILY
8R
R
R
R
R
R
R
R
25.1
The voltage reference module is controlled through the
CVRCON register (Register 25-1). The comparator
voltage reference provides two ranges of output
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
(CVR<3:0>), 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.
REF
8R
-. The voltage source is selected by the CVRSS
selected
Configuring the Comparator
Voltage Reference
CVR<3:0>
DD
and V
by
SS
the
, or the external V
CV
CV
REF
CVROE
REF
DS39969B-page 341
Selection
C
VREF
Pin
REF
+ and
REF
bits