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PIC24FJ128GA010_09 Datasheet, PDF (188/240 Pages) Microchip Technology – 64/80/100-Pin General Purpose, 16-Bit Flash Microcontrollers | |||
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PIC24FJ128GA010 FAMILY
REGISTER 22-1: CVRCON: COMPARATOR VOLTAGE REFERENCE CONTROL REGISTER
U-0
U-0
U-0
U-0
U-0
U-0
U-0
U-0
â
â
â
â
â
â
â
â
bit 15
bit 8
R/W-0
CVREN
bit 7
R/W-0
CVROE
R/W-0
CVRR
R/W-0
CVRSS
R/W-0
CVR3
R/W-0
CVR2
R/W-0
CVR1
R/W-0
CVR0
bit 0
Legend:
R = Readable bit
-n = Value at POR
W = Writable bit
â1â = Bit is set
U = Unimplemented bit, read as â0â
â0â = Bit is cleared
x = Bit is unknown
bit 15-8
bit 7
bit 6
bit 5
bit 4
bit 3-0
Unimplemented: Read as â0â
CVREN: Comparator Voltage Reference Enable bit
1 = CVREF circuit powered on
0 = CVREF circuit powered down
CVROE: Comparator VREF Output Enable bit
1 = CVREF voltage level is output on CVREF pin
0 = CVREF voltage level is disconnected from CVREF pin
CVRR: Comparator VREF Range Selection bit
1 = 0 to 0.625 CVRSRC, with CVRSRC/24 step size
0 = 0.25 CVRSRC to 0.72 CVRSRC, with CVRSRC/32 step size
CVRSS: Comparator VREF Source Selection bit
1 = Comparator reference source CVRSRC = VREF+ â VREF-
0 = Comparator reference source CVRSRC = AVDD â AVSS
CVR3:CVR0: Comparator VREF 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)
DS39747E-page 188
© 2009 Microchip Technology Inc.
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