PIC18F25K20T-ISO Datasheet, PDF (271/456 Pages) Microchip Technology – 28/40/44-Pin Flash Microcontrollers with nanoWatt XLP Technology

PIC18F2XK20/4XK20
19.2.10 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 10-2
and Register 10-3, respectively.
REGISTER 19-1: ADCON0: A/D CONTROL REGISTER 0
U-0
—
bit 7
U-0
R/W-0
R/W-0
R/W-0
—
CHS3
CHS2
CHS1
R/W-0
CHS0
R/W-0
GO/DONE
R/W-0
ADON
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 7-6
bit 5-2
bit 1
bit 0
Unimplemented: Read as ‘0’
CHS<3:0>: Analog Channel Select bits
0000 = AN0
0001 = AN1
0010 = AN2
0011 = AN3
0100 = AN4
0101 = AN5⁽¹⁾
0110 = AN6⁽¹⁾
0111 = AN7⁽¹⁾
1000 = AN8
1001 = AN9
1010 = AN10
1011 = AN11
1100 = AN12
1101 = Reserved
1110 = Reserved
1111 = FVR (1.2 Volt Fixed Voltage Reference)⁽²⁾
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
ADON: ADC Enable bit
1 = ADC is enabled
0 = ADC is disabled and consumes no operating current
Note 1: These channels are not implemented on PIC18F2XK20 devices.
2: Allow greater than 15 s acquisition time when measuring the Fixed Voltage Reference.
 2010 Microchip Technology Inc.
DS41303G-page 271