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PIC16F631-E/ML датащи(PDF) 67 Page - Microchip Technology

номер детали PIC16F631-E/ML
подробное описание детали  20-Pin Flash-Based, 8-Bit CMOS Microcontrollers with nanoWatt Technology
PDF  306 Pages
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производитель  MICROCHIP [Microchip Technology]
домашняя страница  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

PIC16F631-E/ML датащи(HTML) 67 Page - Microchip Technology

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© 2008 Microchip Technology Inc.
DS41262E-page 65
PIC16F631/677/685/687/689/690
4.2.5.2
RA1/AN1/C12IN0-/VREF/ICSPCLK
Figure 4-2 shows the diagram for this pin. The
RA1/AN1/C12IN0-/VREF/ICSPCLK pin is configurable to
function as one of the following:
• a general purpose I/O
• an analog input for the ADC (except PIC16F631)
• an analog input to Comparator C1 or C2
• a voltage reference input for the ADC
• In-Circuit Serial Programming clock
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/AN2/T0CKI/INT/C1OUT pin is configurable to
function as one of the following:
• a general purpose I/O
• an analog input for the ADC (except PIC16F631)
• the clock input for Timer0
• an external edge triggered interrupt
• a digital output from Comparator C1
FIGURE 4-3:
BLOCK DIAGRAM OF RA2
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
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
RABPU
Analog(1)
Input Mode
Change
Q3
Note 1:
ANSEL determines Analog Input mode.
2:
Not implemented on PIC16F631.
To A/D Converter(2)
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(2)
0
1
C1OUT
C1OUT
Enable
To INT
To Timer0
Analog(1)
Input Mode
RABPU
RD PORTA
Interrupt-on-
Change
Q3
Note 1:
ANSEL determines Analog Input mode.
2:
Not implemented on PIC16F631.



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