PIC16F1526 datasheet(156/354 Pages) MICROCHIP

156 / 354 page

PIC16(L)F1526/27

DS41458A-page 156

Preliminary

 2011 Microchip Technology Inc.

ADCON1: A/D CONTROL REGISTER 1

R/W-0/0

U-0

R/W-0/0

ADFM

ADCS<2:0>

—

ADPREF<1:0>

bit 7

bit 0

Legend:

R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

u = Bit is unchanged

x = Bit is unknown

-n/n = Value at POR and BOR/Value at all other Resets

‘1’ = Bit is set

‘0’ = Bit is cleared

bit 7

ADFM:

A/D Result Format Select bit

= Right justified. Six Most Significant bits of ADRESH are set to ‘0’ when the conversion result is

loaded.

= Left justified. Six Least Significant bits of ADRESL are set to ‘0’ when the conversion result is

loaded.

bit 6-4

ADCS<2:0>:

A/D Conversion Clock Select bits

000

=FOSC/2

001

=FOSC/8

010

=FOSC/32

011

=FRC (clock supplied from a dedicated RC oscillator)

100

=FOSC/4

101

=FOSC/16

110

=FOSC/64

111

=FRC (clock supplied from a dedicated RC oscillator)

bit 3-2

Unimplemented:

Read as ‘0’

bit 1-0

ADPREF<1:0>:

A/D Positive Voltage Reference Configuration bits

=VREF is connected to VDD

= Reserved

=VREF is connected to external VREF pin(1)

=VREF is connected to internal Fixed Voltage Reference (FVR) module(1)

Note 1:

When selecting the FVR or the VREF+ pin as the source of the positive reference, be aware that a

minimum voltage specification exists. See Section 25.0 “Electrical Specifications” for details.

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