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PIC16F684 датащи(PDF) 38 Page - Microchip Technology

номер детали PIC16F684
подробное описание детали  14-Pin, Flash-Based 8-Bit CMOS Microcontrollers with nanoWatt Technology
PDF  192 Pages
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производитель  MICROCHIP [Microchip Technology]
домашняя страница  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

PIC16F684 датащи(HTML) 38 Page - Microchip Technology

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PIC16F684
DS41202F-page 36
© 2007 Microchip Technology Inc.
FIGURE 4-2:
BLOCK DIAGRAM OF RA1
4.2.5.3
RA2/AN2/T0CKI/INT/C1OUT
Figure 4-3 shows the diagram for this pin. The RA2 pin
is configurable to function as one of the following:
• a general purpose I/O
• an analog input for the ADC
• the clock input for TMR0
• an external edge triggered interrupt
• a digital output from Comparator 1
FIGURE 4-3:
BLOCK DIAGRAM OF RA2
VDD
VSS
D
Q
CK
Q
D
Q
CK
Q
D
Q
CK
Q
D
Q
CK
Q
VDD
D
EN
Q
D
EN
Q
Weak
Data Bus
WR
WPUA
RD
WPUA
RD PORTA
RD
PORTA
WR
PORTA
WR
TRISA
RD
TRISA
WR
IOCA
RD
IOCA
Interrupt-on-
To Comparator
Analog(1)
Input Mode
RAPU
Analog(1)
Input Mode
Change
Q3
Note
1:
Comparator mode and ANSEL determines Analog
Input mode.
To A/D Converter
I/O Pin
VDD
VSS
D
Q
CK
Q
D
Q
CK
Q
D
Q
CK
Q
D
Q
CK
Q
VDD
D
EN
Q
D
EN
Q
Weak
Analog(1)
Input Mode
Data Bus
WR
WPUA
RD
WPUA
RD
PORTA
WR
PORTA
WR
TRISA
RD
TRISA
WR
IOCA
RD
IOCA
To A/D Converter
0
1
C1OUT
C1OUT
Enable
To INT
To Timer0
Analog(1)
Input Mode
RAPU
RD PORTA
Interrupt-on-
Change
Q3
Note
1:
Analog Input mode is generated by ANSEL.
I/O Pin



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