PIC32MX440F256H-80I Datasheet, PDF (553/646 Pages) Microchip Technology – 64/100-Pin General Purpose and USB 32-Bit Flash Microcontrollers

PIC32MX3XX/4XX
REGISTER 25-1:
r-x
—
bit 31
CVRCON: COMPARATOR VOLTAGE REFERENCE CONTROL REGISTER
r-x
r-x
r-x
r-x
r-x
r-x
r-x
—
—
—
—
—
—
—
bit 24
r-x
—
bit 23
r-x
r-x
r-x
r-x
r-x
r-x
r-x
—
—
—
—
—
—
—
bit 16
R/W-0
r-x
r-x
r-x
r-x
r-x
r-x
r-x
ON
—
—
—
—
—
—
—
bit 15
bit 8
r-x
—
bit 7
R/W-0
CVROE
R/W-0
CVRR
R/W-0
CVRSS
R/W-0
R/W-0
R/W-0
CVR<3:0>
R/W-0
bit 0
Legend:
R = Readable bit
U = Unimplemented bit
W = Writable bit
P = Programmable bit
-n = Bit Value at POR: (‘0’, ‘1’, x = Unknown)
r = Reserved bit
bit 31-16
bit 15
bit 14-7
bit 6
bit 5
bit 4
bit 3-0
Reserved: Write ‘0’; ignore read
ON: CVREF Peripheral On bit
1 = Module is enabled; setting this bit does not affect the other bits in the register
0 = Module is disabled and does not consume current; clearing this bit does not affect the other bits
in the register
Reserved: Write ‘0’; ignore read
CVROE: CVREF Output Enable bit
1 = Voltage level is output on CVREF pin
0 = Voltage level is disconnected from CVREF pin
Note: CVROE overrides the TRIS bit setting; see Section 12.0 “I/O Ports” for more information.
CVRR: CVREF Range Selection bit
1 = 0 to 0.67 CVRSRC, with CVRSRC/24 step size
0 = 0.25 CVRSRC to 0.75 CVRSRC, with CVRSRC/32 step size
CVRSS: CVREF Source Selection bit
1 = Comparator voltage reference source, CVRSRC = (VREF+) – (VREF-)
0 = Comparator voltage reference source, CVRSRC = AVDD – AVSS
CVR<3:0>: CVREF Value Selection 0 ≤ CVR3:CVR0 ≤ 15 bits
When CVRR = 1:
CVREF = (CVR<3:0>/24) • (CVRSRC)
When CVRR = 0:
CVREF = 1/4 • (CVRSRC) + (CVR<3:0>/32) • (CVRSRC)
© 2008 Microchip Technology Inc.
Preliminary
DS61143E-page 551