PIC16F676-I/ST Microchip Technology Inc., PIC16F676-I/ST Datasheet - Page 24

• 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

PIC16F630/676
3.2.3
Each PORTA pin is multiplexed with other functions.
The pins and their combined functions are briefly
described here. For specific information about individ-
ual functions such as the comparator or the A/D, refer
to the appropriate section in this Data Sheet.
3.2.3.1
Figure 3-1 shows the diagram for this pin. The RA0 pin
is configurable to function as one of the following:
• a general purpose I/O
• an analog input for the A/D (PIC16F676 only)
• an analog input to the comparator
3.2.3.2
Figure 3-1 shows the diagram for this pin. The RA1 pin
is configurable to function as one of the following:
• as a general purpose I/O
• an analog input for the A/D (PIC16F676 only)
• an analog input to the comparator
• a voltage reference input for the A/D (PIC16F676
DS40039C-page 22
only)
PIN DESCRIPTIONS AND
DIAGRAMS
RA0/AN0/CIN+
RA1/AN1/CIN-/V
REF
FIGURE 3-1:
PORTA
PORTA
WPUA
WPUA
Data Bus
TRISA
TRISA
IOCA
IOCA
Interrupt-on-Change
WR
WR
WR
WR
RD
RD
RD
RD
D
D
D
D
To Comparator
To A/D Converter
CK
CK
CK
CK
Q
Q
Q
Q
Q
Q
Q
Q
Input Mode
BLOCK DIAGRAM OF RA0
AND RA1 PINS
RD PORTA
Analog
 2003 Microchip Technology Inc.
Input Mode
RAPU
Analog
Q
Q
EN
EN
D
D
V
DD
Weak
V
V
DD
SS
I/O pin