PIC16 datasheet(142/418 Pages) MICROCHIP

142 / 418 page

PIC16(L)F1508/9

DS40001609C-page 142

 2011-2013 Microchip Technology Inc.

ADCON1: ADC 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: ADC Result Format Select bit

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

loaded.

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

loaded.

bit 6-4

ADCS<2:0>: ADC Conversion Clock Select bits

000 =FOSC/2

001 =FOSC/8

010 =FOSC/32

011 = FRC (clock supplied from an internal RC oscillator)

100 =FOSC/4

101 =FOSC/16

110 =FOSC/64

111 = FRC (clock supplied from an internal RC oscillator)

bit 3-2

Unimplemented: Read as ‘0’

bit 1-0

ADPREF<1:0>: ADC Positive Voltage Reference Configuration bits

00 =VRPOS is connected to VDD

01 = Reserved

10 =VRPOS is connected to external VREF+ pin(1)

11 = Reserved

Note 1:

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

specification exists. See Section 29.0 “Electrical Specifications” for details.

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