Microchip Technology IC MCU FLASH PIC16F676-I/ST TSSOP-14 MCP PIC16F676-I/ST Data Sheet
Product codes
PIC16F676-I/ST
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
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/V
PP
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
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
V
DD
V
SS
D
Q
CK
Q
D
Q
CK
Q
D
Q
CK
Q
D
Q
CK
Q
V
DD
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
V
SS
D
Q
CK
Q
D
EN
Q
Data Bus
RD PORTA
RD
PORTA
WR
IOCA
RD
IOCA
Interrupt-on-Change
Reset
MCLRE
RD
TRISA
V
SS
D
EN
Q
MCLRE