Datasheet

PIC18F6525/6621/8525/8621
DS39612C-page 234  2003-2013 Microchip Technology Inc.
REGISTER 20-2: ADCON1: A/D CONTROL REGISTER 1
U-0 U-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0
— — VCFG1 VCFG0 PCFG3 PCFG2 PCFG1 PCFG0
bit 7 bit 0
bit 7-6 Unimplemented: Read as ‘0’
bit 5-4 VCFG1:VCFG0: Voltage Reference Configuration bits:
bit 3-0 PCFG3:PCFG0: A/D Port Configuration Control bits:
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
VCFG1
VCFG0
A/D V
REF+ A/D VREF-
00 AV
DD AVSS
01 External VREF+AVSS
10 AVDD External VREF-
11 External V
REF+External VREF-
A = Analog input D = Digital I/O
Note: Shaded cells indicate A/D channels available only on PIC18F8525/8621 devices.
PCFG3
PCFG0
AN15 AN14 AN13 AN12
AN11
AN10
AN9 AN8 AN7 AN6 AN5 AN4 AN3 AN2 AN1 AN0
0000 A A A AAAAAAAAAAAAA
0001
D D A AAAAAAAAAAAAA
0010 D D D AAAAAAAAAAAAA
0011 D D D DAAAAAAAAAAAA
0100
D D D DDAAAAAAAAAAA
0101 D D D DDDAAAAAAAAAA
0110 D D D DDDDAAAAAAAAA
0111
D D D DDDDDAAAAAAAA
1000 D D D DDDDDDAAAAAAA
1001 D D D DDDDDDDAAAAAA
1010
D D D DDDDDDDDAAAAA
1011 D D D DDDDDDDDDAAAA
1100 D D D DDDDDDDDDDAAA
1101
D D D DDDDDDDDDDDAA
1110 D D D DDDDDDDDDDDDA
1111
D D D DDDDDDDDDDDDD