PIC18F2220_07 Datasheet, PDF (214/386 Pages) Microchip Technology – 28/40/44-Pin High-Performance, Enhanced Flash Microcontrollers with 10-Bit A/D and nanoWatt Technology

PIC18F2220/2320/4220/4320
REGISTER 19-2:
ADCON1 REGISTER
U-0
U-0
R/W-0
—
—
VCFG1
bit 7
R/W-0
VCFG0
R/W-q⁽¹⁾
PCFG3
R/W-q⁽¹⁾
PCFG2
R/W-q⁽¹⁾
PCFG1
R/W-q⁽¹⁾
PCFG0
bit 0
bit 7-6
bit 5
bit 4
bit 3-0
Unimplemented: Read as ‘0’
VCFG1: Voltage Reference Configuration bit, VREFL Source
1 = VREF- (AN2)
0 = AVSS
VCFG0: Voltage Reference Configuration bit, VREFH Source
1 = VREF+ (AN3)
0 = AVDD
PCFG3:PCFG0: A/D Port Configuration Control bits
PCFG3:
PCFG0
0000⁽¹⁾ A A A A A A A A A A A A A
0001 A A A A A A A A A A A A A
0010 A A A A A A A A A A A A A
0011 D A A A A A A A A A A A A
0100 D D A A A A A A A A A A A
0101 D D D A A A A A A A A A A
0110 D D D D A A A A A A A A A
0111^{(1) D D D D D A A A A A A A A}
1000 D D D D D D A A A A A A A
1001 D D D D D D D A A A A A A
1010 D D D D D D D D A A A A A
1011 D D D D D D D D D A A A A
1100 D D D D D D D D D D A A A
1101 D D D D D D D D D D D A A
1110 D D D D D D D D D D D D A
1111 D D D D D D D D D D D D D
A = Analog input
D = Digital I/O
Note 1: The POR value of the PCFG bits depends on the value of the PBAD bit in
Configuration Register 3H. When PBAD = 1, PCFG<3:0> = 0000; when PBAD = 0,
PCFG<3:0> = 0111.
2: AN5 through AN7 are available only in PIC18F4X20 devices.
Legend:
R = Readable bit
- n = Value at POR
W = Writable bit
‘1’ = Bit is set
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared x = Bit is unknown
DS39599F-page 212
© 2007 Microchip Technology Inc.