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PIC16F882-I датащи(PDF) 45 Page - Microchip Technology

номер детали PIC16F882-I
подробное описание детали  28/40/44-Pin, Enhanced Flash-Based 8-Bit CMOS Microcontrollers
PDF  328 Pages
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производитель  MICROCHIP [Microchip Technology]
домашняя страница  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

PIC16F882-I датащи(HTML) 45 Page - Microchip Technology

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© 2009 Microchip Technology Inc.
DS41291F-page 43
PIC16F882/883/884/886/887
3.2.3.2
RA1/AN1/C12IN1-
Figure 3-2 shows the diagram for this pin. This pin is
configurable to function as one of the following:
• a general purpose I/O
• an analog input for the ADC
• a negative analog input to Comparator C1 or C2
FIGURE 3-2:
BLOCK DIAGRAM OF RA1
3.2.3.3
RA2/AN2/VREF-/CVREF/C2IN+
Figure 3-3 shows the diagram for this pin. This pin is
configurable to function as one of the following:
• a general purpose I/O
• an analog input for the ADC
• a negative voltage reference input for the ADC
and CVREF
• a comparator voltage reference output
• a positive analog input to Comparator C2
FIGURE 3-3:
BLOCK DIAGRAM OF RA2
I/O Pin
VDD
VSS
D
Q
CK
Q
D
Q
CK
Q
Analog(1)
Input Mode
Data Bus
RD
PORTA
WR
PORTA
WR
TRISA
RD
TRISA
To A/D Converter
Note
1:
ANSEL determines Analog Input mode.
To Comparator
I/O Pin
VDD
VSS
D
Q
CK
Q
D
Q
CK
Q
Analog(1)
Input Mode
Data Bus
RD
PORTA
WR
PORTA
WR
TRISA
RD
TRISA
To Comparator (VREF-)
Note
1:
ANSEL determines Analog Input mode.
To Comparator (positive input)
CVREF
VROE
To A/D Converter (VREF-)
To A/D Converter (analog channel)



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