44-Pin Demo Board Lessons
See the Analog-to-Digital section in the PIC16F882/883/884/886/887 Data Sheet
(DS41291) for more details on the ADC module.
REGISTER 3-2:
ADCON0: A/D CONTROL REGISTER 0
R/W-0
ADCS1
R/W-0
ADCS0
R/W-0
CHS3
R/W-0
CHS2
R/W-0
CHS1
R/W-0
CHS0
R/W-0
GO/DONE
R/W-0
ADON
bit 7
Legend:
bit 0
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 7-6
bit 5-2
bit 1
bit 0
? 2007 Microchip Technology Inc.
ADCS<1:0>: A/D Conversion Clock Select bits
00 = F OSC /2
01 = F OSC /8
10 = F OSC /32
11 = F RC (clock derived from a dedicated internal oscillator = 500 kHz max)
CHS<3:0>: Analog Channel Select bits
0000 = AN0
0001 = AN1
0010 = AN2
0011 = AN3
0100 = AN4
0101 = AN5
0110 = AN6
0111 = AN7
1000 = AN8
1001 = AN9
1010 = AN10
1011 = AN11
1100 = AN12
1101 = AN13
1110 = CV REF
1111 = Fixed Ref (0.6 volt fixed reference)
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
ADON: ADC Enable bit
1 = ADC is enabled
0 = ADC is disabled and consumes no operating current
DS41296B-page 21
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