PIC16C77X_13 Datasheet, PDF (118/202 Pages) Microchip Technology – 28/40-Pin, 8-Bit CMOS Microcontrollers w/ 12-Bit A/D

PIC16C77X
FIGURE 11-2: ADCON1 REGISTER (ADDRESS 9Fh)
R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0
ADFM VCFG2 VCFG1 VCFG0 PCFG3 PCFG2 PCFG1 PCFG0
bit7
bit 0
bit 7:
bit 6:4
ADFM: A/D Result Format Select bit
1 = Right justified
0 = Left justified
VCFG2:VCFG0: Voltage reference configuration bits
A/D VREFH
000
AVDD
001 External VREF+
A/D VREFL
AVSS
External VREF-
010
Internal VRH
011 External VREF+
100
Internal VRH
101
AVDD
110
AVDD
111
Internal VRL
Internal VRL
AVSS
AVSS
External VREF-
Internal VRL
AVSS
R=
W=
U=
-n=
Readable bit
Writable bit
Unimplemented bit, read as ‘0’
Value at POR reset
bit 3:0 PCFG3:PCFG0: A/D Port Configuration bits⁽¹⁾
AN9 AN8 AN7 AN6 AN5 AN4 AN3 AN2 AN1 AN0
0000 A A A A A A A A A A
0001 A A A A A A A A A A
0010 A A A A A A A A A A
0011 A A A A A A A A A A
0100 A A A A A A A A A A
0101 A A A A A A A A A A
0110 D A A A A A A A A A
0111 D D A A A A A A A A
1000 D D D A A A A A A A
1001 D D D D A A A A A A
1010 D D D D D A A A A A
1011 D D D D D D A A A A
1100 D D D D D D D A A A
1101 D D D D D D D D A A
1110 D D D D D D D D D A
1111 D D D D D D D D D D
A = Analog input D= Digital I/O
Note 1: Selection of an unimplemented channel produces a result of 0xFFFFFF.
DS30275B-page 118
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