Datasheet

PIC16C71X
DS30272A-page 38  1997 Microchip Technology Inc.
FIGURE 7-2: ADCON0 REGISTER (ADDRESS 1Fh), PIC16C715
FIGURE 7-3: ADCON1 REGISTER, PIC16C710/71/711 (ADDRESS 88h),
PIC16C715 (ADDRESS 9Fh)
R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 U-0 R/W-0
ADCS1 ADCS0
— CHS1 CHS0 GO/DONE — ADON R =Readable bit
W = Writable bit
U =Unimplemented bit,
read as ‘0’
- n = Value at POR reset
bit7 bit0
bit 7-6: ADCS1:ADCS0: A/D Conversion Clock Select bits
00 = F
OSC/2
01 = F
OSC/8
10 = F
OSC/32
11 = F
RC (clock derived from an RC oscillation)
bit 5: Unused
bit 6-3: CHS1:CHS0: Analog Channel Select bits
000 = channel 0, (RA0/AN0)
001 = channel 1, (RA1/AN1)
010 = channel 2, (RA2/AN2)
011 = channel 3, (RA3/AN3)
100 = channel 0, (RA0/AN0)
101 = channel 1, (RA1/AN1)
110 = channel 2, (RA2/AN2)
111 = channel 3, (RA3/AN3)
bit 2: GO/DONE
: A/D Conversion Status bit
If ADON = 1
1 = A/D conversion in progress (setting this bit starts the A/D conversion)
0 = A/D conversion not in progress (This bit is automatically cleared by hardware when the A/D conver-
sion is complete)
bit 1: Unimplemented: Read as '0'
bit 0: ADON: A/D On bit
1 = A/D converter module is operating
0 = A/D converter module is shutoff and consumes no operating current
U-0 U-0 U-0 U-0 U-0 U-0 R/W-0 R/W-0
— — — — — — PCFG1 PCFG0 R =Readable bit
W = Writable bit
U =Unimplemented
bit, read as ‘0’
- n =Value at POR reset
bit7 bit0
bit 7-2: Unimplemented: Read as '0'
bit 1-0: PCFG1:PCFG0: A/D Port Configuration Control bits
A = Analog input
D = Di
g
ital I/O
PCFG1:PCFG0 RA1 & RA0 RA2 RA3 V
REF
00 A A A VDD
01 A A VREF RA3
10 A D D V
DD
11 D D D VDD