PIC18F23K22 Datasheet, PDF (300/492 Pages) Microchip Technology – 28/40/44-Pin, Low-Power, High-Performance Microcontrollers with nanoWatt XLP Technology

PIC18(L)F2X/4XK22
REGISTER 17-3: ADCON2: A/D CONTROL REGISTER 2
R/W-0
ADFM
bit 7
U-0
R/W-0
R/W-0
R/W-0
—
ACQT<2:0>
R/W-0
R/W-0
ADCS<2:0>
R/W-0
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 5-3
bit 2-0
Note 1:
ADFM: A/D Conversion Result Format Select bit
1 = Right justified
0 = Left justified
Unimplemented: Read as ‘0’
ACQT<2:0>: A/D Acquisition time select bits. Acquisition time is the duration that the A/D charge hold-
ing capacitor remains connected to A/D channel from the instant the GO/DONE bit is set until conver-
sions begins.
000 = 0⁽¹⁾
001 = 2 TAD
010 = 4 TAD
011 = 6 TAD
100 = 8 TAD
101 = 12 TAD
110 = 16 TAD
111 = 20 TAD
ADCS<2:0>: A/D Conversion Clock Select bits
000 = FOSC/2
001 = FOSC/8
010 = FOSC/32
011 = FRC⁽¹⁾ (clock derived from a dedicated internal oscillator = 600 kHz nominal)
100 = FOSC/4
101 = FOSC/16
110 = FOSC/64
111 = FRC⁽¹⁾ (clock derived from a dedicated internal oscillator = 600 kHz nominal)
When the A/D clock source is selected as FRC then the start of conversion is delayed by one instruction
cycle after the GO/DONE bit is set to allow the SLEEP instruction to be executed.
DS41412B-page 300
Preliminary
 2010 Microchip Technology Inc.