PIC12F629-ISLASHSN datasheet(24/136 Pages) MICROCHIP

24 / 136 page

PIC12F629/675

DS41190G-page 24

 2010 Microchip Technology Inc.

3.3

Pin Descriptions and Diagrams

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

GP0/AN0/CIN+

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

GP1/AN1/CIN-/VREF

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

only)

FIGURE 3-1:

BLOCK DIAGRAM OF GP0

AND GP1 PINS

I/O pin

VDD

VSS

VDD

Weak

Data Bus

WPU

RD PORT

PORT

TRISIO

IOC

Interrupt-on-Change

To Comparator

To A/D Converter

Analog

Input Mode

GPPU

Analog

Input Mode

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