PIC16F785 datasheet(83/178 Pages) MICROCHIP

Il numero della parte	PIC16F785

Spiegazioni elettronici	20-Pin Flash-Based 8-Bit CMOS Microcontroller with Two-Phase Asychronous Feedback PWM, Dual High-Speed Comparators and Dual Operational Amplifiers

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Produttore elettronici	MICROCHIP [Microchip Technology]

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83 / 178 page

 2004 Microchip Technology Inc.

Preliminary

DS41249A-page 81

PIC16F785

REGISTER 12-3:

ADCON0 — A/D CONTROL REGISTER (ADDRESS: 1Fh)

REGISTER 12-4:

ADCON1 — A/D CONTROL REGISTER 1 (ADDRESS: 9Fh)

R/W-0

ADFM

VCFG

CHS3

CHS2

CHS1

CHS0

GO/DONE

ADON

bit 7

bit 0

bit 7

ADFM: A/D Result Formed Select bit

1

= Right justified

0

= Left justified

bit 6

VCFG: Voltage Reference bit

1

= VREF pin

0

= VDD

bit 5-2

CHS<3:0>: Analog Channel Select bits

0000

= Channel 00 (AN0)

0001

= Channel 01 (AN1)

0010

= Channel 02 (AN2)

0011

= Channel 03 (AN3)

0100

= Channel 04 (AN4)

0101

= Channel 05 (AN5)

0110

= Channel 06 (AN6)

0111

= Channel 07 (AN7)

1000

= Channel 08 (AN8)

1001

= Channel 09 (AN9)

1010

= Channel 10 (AN10)

1011

= Channel 11 (AN11)

1100

=CVREF

1101

=VR

1110

= Reserved. Do not use.

1111

= Reserved. Do not use.

bit 1

GO/DONE: A/D Conversion Status bit

1

= A/D conversion cycle in progress. Setting this bit starts an A/D conversion cycle.

This bit is automatically cleared by hardware when the A/D conversion has completed.

0

= A/D conversion completed/not in progress

bit 0

ADON: A/D Conversion Status bit

1

= A/D converter module is operating

0

= A/D converter is shut-off and consumes no operating current

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

U-0

R/W-0

U-0

—

ADCS2

ADCS1

ADCS0

—

bit 7

bit 0

bit 7:

Unimplemented: Read as ‘0’

bit 6-4:

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

000

=FOSC/2

001

=FOSC/8

010

=FOSC/32

x11

=FRC (clock derived from a dedicated internal oscillator = 500 kHz max)

100

=FOSC/4

101

=FOSC/16

110

=FOSC/64

bit 3-0:

Unimplemented: Read as ‘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

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