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PIC12F1822-I/MF датащи(PDF) 133 Page - Microchip Technology

номер детали PIC12F1822-I/MF
подробное описание детали  8/14-Pin Flash Microcontrollers with nanoWatt XLP Technology
PDF  398 Pages
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производитель  MICROCHIP [Microchip Technology]
домашняя страница  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

PIC12F1822-I/MF датащи(HTML) 133 Page - Microchip Technology

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 2010 Microchip Technology Inc.
Preliminary
DS41413A-page 133
PIC12F/LF1822/16F/LF1823
15.0 ANALOG-TO-DIGITAL
CONVERTER (ADC) MODULE
The
Analog-to-Digital
Converter
(ADC)
allows
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 (ADRESH:ADRESL register pair).
Figure 15-1 shows the block diagram of the ADC.
The ADC voltage reference is software selectable to be
either internally generated or externally supplied.
The ADC can generate an interrupt upon completion of
a conversion. This interrupt can be used to wake-up the
device from Sleep.
FIGURE 15-1:
ADC BLOCK DIAGRAM
Note 1: When ADON = 0, all multiplexer inputs are disconnected.
2: Not available on PIC12F/LF1822.
DAC
VDD
VREF+
ADPREF = 10
ADPREF = 00
ADPREF = 11
FVR Buffer1
ADON(1)
GO/DONE
VSS
ADC
00000
00001
00010
00011
00100
00101
00111
00110
11110
CHS<4:0>
AN0
AN1
AN2
AN4(2)
AN5(2)
AN6(2)
AN7(2)
AN3
11111
ADRESH ADRESL
10
16
ADFM
0 = Left Justify
1 = Right Justify



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