Datasheet

2009-2011 Microchip Technology Inc. DS41365E-page 209
PIC18(L)F1XK22
16.2.10 ADC REGISTER DEFINITIONS
The following registers are used to control the opera-
tion of the ADC.
Note: Analog pin control is performed by the
ANSEL and ANSELH registers. For
ANSEL and ANSELH registers, see
Register 8-14 and Register 8-15,
respectively.
REGISTER 16-1: ADCON0: A/D CONTROL REGISTER 0
U-0 U-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0
CHS3 CHS2 CHS1 CHS0 GO/DONE ADON
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 5-2 CHS<3:0>: Analog Channel Select bits
0000 = AN0
0001 = AN1
0010 = AN2
0011 = AN3
0100 = AN4
0101 = AN5
0110 = AN6
0111 = AN7
1000 = AN8
1001 = AN9
1010 = AN10
1011 = AN11
1100 = Reserved
1101 = Reserved
1110 = DAC
(2)
1111 = FVR
(2)
bit 1 GO/DONE: A/D Conversion Status bit
1 = A/D conversion cycle in progress. Setting this bit starts an A/D conversion cycle.
This bit is automatically cleared by hardware when the A/D conversion has completed.
0 = A/D conversion completed/not in progress
bit 0 ADON: ADC Enable bit
1 = ADC is enabled
0 = ADC is disabled and consumes no operating current
Note 1: Selecting reserved channels will yield unpredictable results as unimplemented input channels are left
floating.
2: See Section 20.0 “VOLTAGE REFERENCES” for more information.