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PIC16F676-E/ST Datasheet(PDF) 25 Page - Microchip Technology

Part # PIC16F676-E/ST
Description  14-Pin, Flash-Based 8-Bit CMOS Microcontrollers
PDF  132 Pages
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Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

PIC16F676-E/ST Datasheet(HTML) 25 Page - Microchip Technology

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 2010 Microchip Technology Inc.
DS40039F-page 25
PIC16F630/676
3.2.3.3
RA2/AN2/T0CKI/INT/COUT
Figure 3-2 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 A/D (PIC16F676 only)
• a digital output from the comparator
• the clock input for TMR0
• an external edge triggered interrupt
FIGURE 3-2:
BLOCK DIAGRAM OF RA2
3.2.3.4
RA3/MCLR/VPP
Figure 3-3 shows the diagram for this pin. The RA3 pin
is configurable to function as one of the following:
• a general purpose input
• as Master Clear Reset
FIGURE 3-3:
BLOCK DIAGRAM OF RA3
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
Input Mode
Data Bus
WR
WPUA
RD
WPUA
RD
PORTA
WR
PORTA
WR
TRISA
RD
TRISA
WR
IOCA
RD
IOCA
Interrupt-on-Change
To A/D Converter
0
1
COUT
COUT
Enable
To INT
To TMR0
Analog
Input Mode
RAPU
RD PORTA
Analog
Input
Mode
I/O pin
VSS
D
Q
CK
Q
D
EN
Q
Data Bus
RD PORTA
RD
PORTA
WR
IOCA
RD
IOCA
Interrupt-on-Change
Reset
MCLRE
RD
TRISA
VSS
D
EN
Q
MCLRE



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