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PIC16LF1946_13 Datasheet, PDF (169/478 Pages) Microchip Technology – 64-Pin Flash-Based, 8-Bit CMOS Microcontrollers with LCD Driver and nanoWatt XLP Technology | |||
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PIC16(L)F1946/47
REGISTER 16-2: ADCON1: A/D CONTROL REGISTER 1
R/W-0/0
R/W-0/0
R/W-0/0
R/W-0/0
U-0
ADFM
ADCS<2:0>
â
bit 7
R/W-0/0
ADNREF
R/W-0/0
R/W-0/0
ADPREF<1:0>
bit 0
Legend:
R = Readable bit
u = Bit is unchanged
â1â = Bit is set
W = Writable bit
x = Bit is unknown
â0â = Bit is cleared
U = Unimplemented bit, read as â0â
-n/n = Value at POR and BOR/Value at all other Resets
bit 7
bit 6-4
bit 3
bit 2
bit 1-0
ADFM: A/D Result Format Select bit
1 = Right justified. Six Most Significant bits of ADRESH are set to â0â when the conversion result is
loaded.
0 = Left justified. Six Least Significant bits of ADRESL are set to â0â when the conversion result is
loaded.
ADCS<2:0>: A/D Conversion Clock Select bits
111 = FRC (clock supplied from a dedicated RC oscillator)
110 = FOSC/64
101 = FOSC/16
100 = FOSC/4
011 = FRC (clock supplied from a dedicated RC oscillator)
010 = FOSC/32
001 = FOSC/8
000 = FOSC/2
Unimplemented: Read as â0â
ADNREF: A/D Negative Voltage Reference Configuration bit
1 = VREF- is connected to external VREF- pin(1)
0 = VREF- is connected to VSS
ADPREF<1:0>: A/D Positive Voltage Reference Configuration bits
11 = VREF+ is connected to internal Fixed Voltage Reference (FVR) module(1)
10 = VREF+ is connected to external VREF+ pin(1)
01 = Reserved
00 = VREF+ is connected to VDD
Note 1: When selecting the FVR or the VREF+ pin as the source of the positive reference, be aware that a
minimum voltage specification exists. See Section 30.0 âElectrical Specificationsâ for details.
ï£ 2010-2012 Microchip Technology Inc.
DS41414D-page 169
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