PIC16F87-E Datasheet, PDF (116/228 Pages) Microchip Technology – 18/20/28-Pin Enhan lashMicrocontrollers with nanoWatt Technology

PIC16F87/88
REGISTER 12-2:
ADCON0: A/D CONTROL REGISTER (ADDRESS 1Fh) PIC16F88 DEVICES ONLY
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 CHS2
CHS1
CHS0 GO/DONE
—
ADON
bit 7
bit 0
bit 7-6
bit 5-3
bit 2
bit 1
bit 0
ADCS<1:0>: A/D Conversion Clock Select bits
If ADCS2 = 0:
00 = FOSC/2
01 = FOSC/8
10 = FOSC/32
11 = FRC (clock derived from the internal A/D module RC oscillator)
If ADCS2 = 1:
00 = FOSC/4
01 = FOSC/16
10 = FOSC/64
11 = FRC (clock derived from the internal A/D module RC oscillator)
CHS<2:0>: 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 4 (RA4/AN4)
101 = Channel 5 (RB6/AN5)
110 = Channel 6 (RB7/AN6)
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
conversion is complete)
Unimplemented: Read as ‘0’
ADON: A/D On bit
1 = A/D converter module is operating
0 = A/D converter module is shut off and consumes no operating current
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
DS30487C-page 114
 2005 Microchip Technology Inc.