PIC18F2523-ISO View Datasheet(PDF) - Microchip Technology

Part Name

Description

Manufacturer

PIC18F2523-ISO

28/40/44-Pin, Enhanced Flash Microcontrollers with 12-Bit A/D and nanoWatt Technology

Microchip Technology 

PIC18F2423/2523/4423/4523

REGISTER 2-3: ADCON2: A/D CONTROL REGISTER 2

R/W-0

ADFM

bit 7

U-0

R/W-0

R/W-0

R/W-0

—

ACQT2

ACQT1

ACQT0

R/W-0

ADCS2

R/W-0

ADCS1

R/W-0

ADCS0

bit 0

Legend:

R = Readable bit

-n = Value at POR

W = Writable bit

‘1’ = Bit is set

U = Unimplemented bit, read as ‘0’

‘0’ = Bit is cleared

x = Bit is unknown

bit 7

bit 6

bit 5-3

bit 2-0

ADFM: A/D Result Format Select bit

1 = Right justified

0 = Left justified

Unimplemented: Read as ‘0’

ACQT<2:0>: A/D Acquisition Time Select bits

111 = 20 TAD

110 = 16 TAD

101 = 12 TAD

100 = 8 TAD

011 = 6 TAD

010 = 4 TAD

001 = 2 TAD

000 = 0 TAD(1)

ADCS<2:0>: A/D Conversion Clock Select bits

111 = FRC (clock derived from A/D RC oscillator)(1)

110 = FOSC/64

101 = FOSC/16

100 = FOSC/4

011 = FRC (clock derived from A/D RC oscillator)(1)

010 = FOSC/32

001 = FOSC/8

000 = FOSC/2

Note 1: If the A/D FRC clock source is selected, a delay of one TCY (instruction cycle) is added before the A/D

clock starts. This allows the SLEEP instruction to be executed before starting a conversion.

© 2009 Microchip Technology Inc.

DS39755C-page 27

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