PIC17C7XX_13 Datasheet, PDF (180/306 Pages) Microchip Technology – High-Performance 8-bit CMOS EPROM Microcontrollers with 10-bit A/D

PIC17C7XX
REGISTER 16-2: ADCON1 REGISTER (ADDRESS 15h, BANK 5)
R/W-0
ADCS1
bit 7
R/W-0
ADCS0
R/W-0
ADFM
U-0
R/W-0
—
PCFG3
R/W-0
PCFG2
R/W-0
PCFG1
R/W-0
PCFG0
bit 0
bit 7-6
bit 5
bit 4
bit 3-1
bit 0
ADCS1:ADCS0: A/D Conversion Clock Select bits
00 = FOSC/8
01 = FOSC/32
10 = FOSC/64
11 = FRC (clock derived from an internal RC oscillator)
ADFM: A/D Result Format Select
1 = Right justified. 6 Most Significant bits of ADRESH are read as ’0’.
0 = Left justified. 6 Least Significant bits of ADRESL are read as ’0’.
Unimplemented: Read as '0'
PCFG3:PCFG1: A/D Port Configuration Control bits
PCFG0: A/D Voltage Reference Select bit
1 = A/D reference is the VREF+ and VREF- pins
0 = A/D reference is AVDD and AVSS
Note: When this bit is set, ensure that the A/D voltage reference specifications are met.
PCFG3:PCFG0 AN15 AN14 AN13 AN12 AN11 AN10 AN9 AN8 AN7 AN6 AN5 AN4 AN3 AN2 AN1 AN0
000x
001x
010x
011x
100x
101x
110x
111x
A
A
A
A
A
A
AAA A AA A
A
A
A
D
A
A
A
A
A
AAD A AA A
A
A
A
D
D
A
A
A
A
AADDAA A
A
A
A
D
D
D
A
A
A
AAD D DA A
A
A
A
D
D
D
D
A
A
A AD D DD A
A
A
A
D
D
D
D
D
A
A AD D DD D
A
A
A
D
D
D
D
D
D
A AD D DD D D
A
A
D
D
D
D
D
D
DDD D DD D D D D
A = Analog input
D = Digital I/O
Legend:
R = Readable bit
- n = Value at POR Reset
W = Writable bit
’1’ = Bit is set
U = Unimplemented bit, read as ‘0’
’0’ = Bit is cleared x = Bit is unknown
DS30289C-page 180
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