DSPIC33FJ32GP302THSLASHML datasheet(275/403 Pages) MICROCHIP

275 / 403 page

 2009 Microchip Technology Inc.

Preliminary

DS70292D-page 275

dsPIC33FJ32GP302/304, dsPIC33FJ64GPX02/X04, AND dsPIC33FJ128GPX02/X04

CVRCON: COMPARATOR VOLTAGE REFERENCE CONTROL REGISTER

U-0

—

bit 15

bit 8

R/W-0

CVREN

CVROE

CVRR

CVRSS

CVR<3:0>

bit 7

bit 0

Legend:

R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

bit 15-8

Unimplemented: Read as ‘0’

bit 7

CVREN: Comparator Voltage Reference Enable bit

=CVREF circuit powered on

=CVREF circuit powered down

bit 6

CVROE: Comparator VREF Output Enable bit

=CVREF voltage level is output on CVREF pin

=CVREF voltage level is disconnected from CVREF pin

bit 5

CVRR: Comparator VREF Range Selection bit

=CVRSRC range should be 0 to 0.625 CVRSRC with CVRSRC/24 step size

=CVRSRC range should be 0.25 to 0.719 CVRSRC with CVRSRC/32 step size

bit 4

CVRSS: Comparator VREF Source Selection bit

= Comparator reference source CVRSRC = VREF+ – VREF-

= Comparator reference source CVRSRC = AVDD – AVSS

bit 3-0

CVR<3:0>: Comparator VREF Value Selection 0

 CVR<3:0>  15 bits

When CVRR = 1:

CVREF = (CVR<3:0>/ 24)

 (CVRSRC)

When CVRR = 0:

CVREF = 1/4

 (CVRSRC) + (CVR<3:0>/32)  (CVRSRC)

DSPIC33FJ32GP302TH/ML Datasheet(PDF) 275 Page - Microchip Technology

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