PIC18F87J90 Datasheet, PDF (290/450 Pages) Microchip Technology – 64/80-Pin, High-Performance Microcontrollers with LCD Driver and nanoWatt Technology

PIC18F87J90 FAMILY
REGISTER 21-2: ADCON1: A/D CONTROL REGISTER 1
R/W-0
U-0
TRIGSEL
—
bit 7
R/W-0
VCFG1
R/W-0
VCFG0
R/W-0
PCFG3
R/W-0
PCFG2
R/W-0
PCFG1
R/W-0
PCFG0
bit 0
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
bit 7
bit 6
bit 5
bit 4
bit 3-0
TRIGSEL: Special Trigger Select bit
1 = Selects the special trigger from the CTMU
0 = Selects the special trigger from the CCP2
Unimplemented: Read as ‘0’
VCFG1: Voltage Reference Configuration bit (VREF- source)
1 = VREF- (AN2)
0 = AVSS
VCFG0: Voltage Reference Configuration bit (VREF+ source)
1 = VREF+ (AN3)
0 = AVDD
PCFG<3:0>: A/D Port Configuration Control bits:
PCFG<3:0> AN11 AN10 AN9
0000
A
A
A
0001
A
A
A
0010
A
A
A
0011
A
A
A
0100
D
A
A
0101
D
D
A
0110
D
D
D
0111
D
D
D
1000
D
D
D
1001
D
D
D
1010
D
D
D
1011
D
D
D
1100
D
D
D
1101
D
D
D
1110
D
D
D
1111
D
D
D
A = Analog input
AN8 AN7 AN6 AN5
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
D
A
A
A
D
D
A
A
D
D
D
A
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D = Digital I/O
AN4
A
A
A
A
A
A
A
A
A
A
A
D
D
D
D
D
AN3
A
A
A
A
A
A
A
A
A
A
A
A
D
D
D
D
AN2
A
A
A
A
A
A
A
A
A
A
A
A
A
D
D
D
AN1
A
A
A
A
A
A
A
A
A
A
A
A
A
A
D
D
AN0
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
D
DS39933D-page 290
 2010 Microchip Technology Inc.