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PIC16F688-E/ML Datasheet(PDF) 73 Page - Microchip Technology

No. de pieza PIC16F688-E/ML
Descripción Electrónicos  14-Pin Flash-Based, 8-Bit CMOS Microcontrollers with nanoWatt Technology
PDF  202 Pages
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Fabricante Electrónico  MICROCHIP [Microchip Technology]
Página de inicio  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

PIC16F688-E/ML Datasheet(HTML) 73 Page - Microchip Technology

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© 2007 Microchip Technology Inc.
DS41203D-page 71
PIC16F688
8.2.6
ADC REGISTER DEFINITIONS
The following registers are used to control the operation of the ADC.
REGISTER 8-1:
ADCON0: A/D CONTROL REGISTER 0
R/W-0
R/W-0
U-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
ADFM
VCFG
—
CHS2
CHS1
CHS0
GO/DONE
ADON
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 7
ADFM: A/D Conversion Result Format Select bit
1
= Right justified
0
= Left justified
bit 6
VCFG: Voltage Reference bit
1
= VREF pin
0
= VDD
bit 5
Unimplemented: Read as ‘0’
bit 4-2
CHS<2:0>: Analog Channel Select bits
000
= AN0
001
= AN1
010
= AN2
011
= AN3
100
= AN4
101
= AN5
110
= AN6
111
= AN7
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: ADC Enable bit
1
= ADC is enabled
0
= ADC is disabled and consumes no operating current
REGISTER 8-2:
ADCON1: A/D CONTROL REGISTER 1
U-0
R/W-0
R/W-0
R/W-0
U-0
U-0
U-0
U-0
—
ADCS2
ADCS1
ADCS0
—
—
—
—
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 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’



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