Datasheet

© 2009 Microchip Technology Inc. DS41341E-page 105
PIC16F72X/PIC16LF72X
REGISTER 9-2: ADCON1: A/D CONTROL REGISTER 1
REGISTER 9-3: ADRES: ADC RESULT REGISTER
U-0 R/W-0 R/W-0 R/W-0 U-0 U-0 R/W-0 R/W-0
—
ADCS2 ADCS1 ADCS0
— —
ADREF1 ADREF0
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 Unimplemented: Read as ‘0’
bit 6-4 ADCS<2:0>: A/D Conversion Clock Select bits
000 =F
OSC/2
001 =F
OSC/8
010 =F
OSC/32
011 =F
RC (clock supplied from a dedicated RC oscillator)
100 =F
OSC/4
101 =F
OSC/16
110 =F
OSC/64
111 =F
RC (clock supplied from a dedicated RC oscillator)
bit 3-2 Unimplemented: Read as ‘0’
bit 1-0 ADREF<1:0>: Voltage Reference Configuration bits
0x =VREF is connected to VDD
10 =VREF is connected to external VREF (RA3/AN3)
11 =V
REF is connected to internal Fixed Voltage Reference
R/W-x R/W-x R/W-x R/W-x R/W-x R/W-x R/W-x R/W-x
ADRES7 ADRES6 ADRES5 ADRES4 ADRES3 ADRES2 ADRES1 ADRES0
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 7-0 ADRES<7:0>: ADC Result Register bits
8-bit conversion result.