PIC18F-LF1XK50 MICROCHIP [Microchip Technology], PIC18F-LF1XK50 Datasheet - Page 209

• Manufacturer Part Number: PIC18F-LF1XK50
• Description: 20-Pin USB Flash Microcontrollers
• Manufacturer: MICROCHIP [Microchip Technology]

17.0
The
conversion of an analog input signal to a 10-bit binary
representation of that signal. This device uses analog
inputs, which are multiplexed into a single sample and
hold circuit. The output of the sample and hold is
connected to the input of the converter. The converter
generates a 10-bit binary result via successive
approximation and stores the conversion result into the
ADC result registers (ADRESL and ADRESH).
The ADC voltage reference is software selectable to
either V
pins.
The ADC can generate an interrupt upon completion of
a conversion. This interrupt can be used to wake-up the
device from Sleep.
Figure 17-1
FIGURE 17-1:
 2010 Microchip Technology Inc.
Analog-to-Digital
DD
ANALOG-TO-DIGITAL
CONVERTER (ADC) MODULE
, or a voltage applied to the external reference
shows the block diagram of the ADC.
ADC BLOCK DIAGRAM
AN10
AN11
AN3
AN4
AN5
AN6
AN7
AN8
AN9
Unused
Unused
Unused
Unused
Unused
Converter
DAC
FVR
CHS<3:0>
V
REF
V
(ADC)
-
REF
FVR
AV
+
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
SS
AV
PVCFG[1:0] = 01
DD
NVCFG[1:0] = 00
NVCFG[1:0] = 01
allows
PVCFG[1:0] = 10
PVCFG[1:0] = 00
GO/DONE
Preliminary
ADON
V
SS
ADC
PIC18F/LF1XK50
ADFM
ADRESH
0 = Left Justify
1 = Right Justify
10
ADRESL
10
DS41350E-page 209