12F629 Microchip Technology, Inc., 12F629 Datasheet - Page 24

• Manufacturer Part Number: 12F629
• Description: 8-pin Flash-based 8-bit CMOS Microcontrollers
• Manufacturer: Microchip Technology, Inc.

PIC12F629/675
3.3
Each GPIO pin is multiplexed with other functions. The
pins and their combined functions are briefly described
here. For specific information about individual functions
such as the comparator or the A/D, refer to the
appropriate section in this Data Sheet.
3.3.1
Figure 3-1 shows the diagram for this pin. The GP0 pin
is configurable to function as one of the following:
• a general purpose I/O
• an analog input for the A/D (PIC12F675 only)
• an analog input to the comparator
3.3.2
Figure 3-1 shows the diagram for this pin. The GP1 pin
is configurable to function as one of the following:
• as a general purpose I/O
• an analog input for the A/D (PIC12F675 only)
• an analog input to the comparator
• a voltage reference input for the A/D (PIC12F675
DS41190C-page 22
only)
Pin Descriptions and Diagrams
GP0/AN0/CIN+
GP1/AN1/CIN-/V
REF
FIGURE 3-1:
TRISIO
Data Bus
PORT
PORT
WPU
WPU
IOC
TRISIO
Interrupt-on-Change
WR
WR
WR
WR
IOC
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 GP0
AND GP1 PINS
Analog
 2003 Microchip Technology Inc.
RD PORT
Input Mode
GPPU
Analog
Q
Q
EN
EN
D
D
V
DD
Weak
V
V
DD
SS
I/O pin