PIC16F676-I/ML View Datasheet(PDF) - Microchip Technology

Part Name

Description

Manufacturer

PIC16F676-I/ML

14-Pin, Flash-Based 8-Bit CMOS Microcontrollers

Microchip Technology 

PIC16F630/676

3.2.3

PIN DESCRIPTIONS AND

DIAGRAMS

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 RA0/AN0/CIN+

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 RA1/AN1/CIN-/VREF

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

only)

FIGURE 3-1:

Data Bus

DQ

WR

WPUA

CK Q

RD

WPUA

BLOCK DIAGRAM OF RA0

AND RA1 PINS

Analog

Input Mode

VDD

Weak

RAPU

WR

PORTA

DQ

CK Q

WR

TRISA

DQ

CK Q

RD

TRISA

RD

PORTA

DQ

WR

IOCA

CK Q

RD

IOCA

Interrupt-on-Change

VDD

I/O pin

VSS

Analog

Input Mode

QD

EN

QD

EN

RD PORTA

To Comparator

To A/D Converter

DS40039F-page 24

 2010 Microchip Technology Inc.

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