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Microchip Technology DM183021 Data Sheet

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PIC18F2331/2431/4331/4431
DS39616D-page 244
 
 2010 Microchip Technology Inc.
REGISTER 21-5:
ADCHS: A/D CHANNEL SELECT REGISTER
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
GDSEL1
GDSEL0
GBSEL1
GBSEL0
GCSEL1
GCSEL0
GASEL1
GASEL0
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 7-6
GDSEL<1:0>
: Group D Select bits
S/H-2 positive input.
00
 = AN3
01
 = AN7
(1)
1x
 = Reserved
bit 5-4
GBSEL<1:0>
: Group B Select bits
S/H-2 positive input.
00
 = AN1
01
 = AN5
(1)
1x
 = Reserved
bit 3-2
GCSEL<1:0>
: Group C Select bits
S/H-1 positive input.
00
 = AN2
01
 = AN6
(1)
1x
 = Reserved
bit 1-0
GASEL<1:0>
: Group A Select bits
S/H-1 positive input.
00
 = AN0
01
 = AN4
10
 = AN8
(1)
11
 = Reserved
Note 1:
AN5 through AN8 are available only in PIC18F4331/4431 devices.