PIC16F676-I/ST Microchip Technology Inc., PIC16F676-I/ST Datasheet - Page 25

• Manufacturer Part Number: PIC16F676-I/ST
• Description: 14 PIN, 1.75 KB FLASH, 64 RAM, 12 I/O
• Manufacturer: Microchip Technology Inc.

Specifications of PIC16F676-I/ST

• Comparators: 1
• Cpu Speed: 5 MIPS
• Eeprom Memory: 128 Bytes
• Input Output: 12
• Memory Type: Flash
• Number Of Bits: 8
• Package Type: 14-pin TSSO
• Programmable Memory: 1.75K Bytes
• Ram Size: 64 Bytes
• Speed: 20 MHz
• Timers: 1-8-bit, 1-16-bit
• Voltage, Range: 2-5.5 V
• Lead Free Status / Rohs Status: RoHS Compliant part Electrostatic Device

3.2.3.3
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:
 2003 Microchip Technology Inc.
PORTA
PORTA
Data Bus
WPUA
WPUA
TRISA
TRISA
Interrupt-on-Change
IOCA
IOCA
WR
WR
WR
WR
RD
RD
RD
RD
D
D
D
D
To TMR0
To INT
To A/D Converter
CK
CK
CK
CK
RA2/AN2/T0CKI/INT/COUT
Q
Q
Q
Q
Q
Q
Q
Q
Input Mode
BLOCK DIAGRAM OF RA2
Analog
Enable
COUT
COUT
RAPU
Input Mode
RD PORTA
Analog
1
0
Q
Q
Analog
Mode
Input
EN
EN
D
D
V
DD
Weak
V
V
DD
SS
I/O pin
3.2.3.4
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:
Data Bus
PORTA
Interrupt-on-Change
IOCA
IOCA
TRISA
WR
RD
RD
RD
D
CK
RA3/MCLR/V
PIC16F630/676
Q
Q
RESET
BLOCK DIAGRAM OF RA3
V
SS
PP
RD PORTA
MCLRE
Q
Q
MCLRE
EN
EN
DS40039C-page 23
D
D
V
SS
I/O pin