Datasheet

PIC18F6390/6490/8390/8490
DS39629C-page 232 © 2007 Microchip Technology Inc.
REGISTER 18-2: ADCON1: A/D CONTROL REGISTER 1
U-0 U-0 R/W-0 R/W-0 R/W-q R/W-q R/W-q R/W-q
— —
VCFG1 VCFG0 PCFG3 PCFG2 PCFG1 PCFG0
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 Unimplemented: Read as ‘0’
bit 5 VCFG1: Voltage Reference Configuration bit (V
REF- source)
1 = VREF- (AN2)
0 = AV
SS
bit 4 VCFG0: Voltage Reference Configuration bit (VREF+ source)
1 = V
REF+ (AN3)
0 = AV
DD
bit 3-0 PCFG3:PCFG0: A/D Port Configuration Control bits:
A = Analog input D = Digital I/O
PCFG3:
PCFG0
AN11 AN10 AN9 AN8 AN7 AN6 AN5 AN4 AN3 AN2 AN1 AN0
0000
A AAAAAAAAAAA
0001 A AAAAAAAAAAA
0010 A AAAAAAAAAAA
0011 A AAAAAAAAAAA
0100 D AAAAAAAAAAA
0101 D DAAAAAAAAAA
0110 D DDAAAAAAAAA
0111 D DDDAAAAAAAA
1000 D DDDDAAAAAAA
1001 D DDDDDAAAAAA
1010 D DDDDDDAAAAA
1011 D DDDDDDDAAAA
1100 D DDDDDDDDAAA
1101 D DDDDDDDDDAA
1110 D DDDDDDDDDDA
1111 D DDDDDDDDDDD