PIC18F2221 MICROCHIP [Microchip Technology], PIC18F2221 Datasheet - Page 230

• Manufacturer Part Number: PIC18F2221
• Description: 28/40/44-Pin Enhanced Flash Microcontrollers with 10-Bit A/D and nanoWatt Technology
• Manufacturer: MICROCHIP [Microchip Technology]

PIC18F4321 FAMILY
REGISTER 19-2:
DS39689E-page 228
bit 7-6
bit 5
bit 4
bit 3-0
ADCON1: A/D CONTROL REGISTER 1
bit 7
Legend:
R = Readable bit
-n = Value at POR
Unimplemented: Read as ‘0’
VCFG1: Voltage Reference Configuration bit (V
1 = V
0 = V
VCFG0: Voltage Reference Configuration bit (V
1 = V
0 = V
PCFG3:PCFG0: A/D Port Configuration Control bits
PCFG3:
A = Analog input
PCFG0
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
Note 1: The POR value of the PCFG bits depends on the value of the PBADEN con-
U-0
—
REF
SS
REF
DD
(1)
(1)
2: AN5 through AN7 are available only on 40/44-pin devices.
- (AN2)
+ (AN3)
figuration bit. When PBADEN = 1, PCFG<3:0> = 0000; when PBADEN = 0,
PCFG<3:0> = 0111.
A
A
A
D
D
D
D
D
D
D
D
D
D
D
D
D
U-0
—
D
D
D
D
D
D
D
D
D
D
D
D
A
A
A
A
VCFG1
R/W-0
A
A
A
A
A
D
D
D
D
D
D
D
D
D
D
D
Preliminary
W = Writable bit
‘1’ = Bit is set
D
D
D
D
D
D
D
D
D
D
A
A
A
A
A
A
VCFG0
R/W-0
A
A
A
A
A
A
A
D
D
D
D
D
D
D
D
D
D = Digital I/O
A
A
A
A
A
A
A
A
D
D
D
D
D
D
D
D
REF
REF
R/W-0
PCFG3
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
- source)
+ source)
D
D
D
D
D
D
D
A
A
A
A
A
A
A
A
A
(1)
A
A
A
A
A
A
A
A
A
A
D
D
D
D
D
D
PCFG2
R/W
© 2007 Microchip Technology Inc.
D
D
D
D
D
A
A
A
A
A
A
A
A
A
A
A
(1)
A
A
A
A
A
A
A
A
A
A
A
A
D
D
D
D
x = Bit is unknown
PCFG1
R/W
A
A
A
A
A
A
A
A
A
A
A
A
A
D
D
D
(1)
A
A
A
A
A
A
A
A
A
A
A
A
A
A
D
D
PCFG0
R/W
D
bit 0
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
(1)