PIC16F73-ISLASHP datasheet(10/174 Pages) MICROCHIP

Part #	PIC16F73-I/P

Description	28/40-pin, 8-bit CMOS FLASH Microcontrollers

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Manufacturer	MICROCHIP [Microchip Technology]

Direct Link	http://www.microchip.com

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10 / 174 page

PIC16F7X

DS30325B-page 8

 2002 Microchip Technology Inc.

TABLE 1-2:

PIC16F73 AND PIC16F76 PINOUT DESCRIPTION

Pin Name

DIP

SSOP

SOIC

Pin#

MLF

Pin#

I/O/P

Type

Buffer

Type

Description

OSC1/CLKI

OSC1

CLKI

96

I

ST/CMOS(3) Oscillator crystal or external clock input.

Oscillator crystal input or external clock source input. ST

buffer when configured in RC mode. Otherwise CMOS.

External clock source input. Always associated with pin

function OSC1 (see OSC1/CLKI, OSC2/CLKO pins).

OSC2/CLKO

OSC2

CLKO

10

7

O

—

Oscillator crystal or clock output.

Oscillator crystal output.

Connects to crystal or resonator in Crystal Oscillator

mode.

In RC mode, OSC2 pin outputs CLKO, which has 1/4 the

frequency of OSC1 and denotes the instruction cycle rate.

MCLR/VPP

MCLR

VPP

126

I

P

ST

Master Clear (input) or programming voltage (output).

Master Clear (Reset) input. This pin is an active low

RESET to the device.

Programming voltage input.

PORTA is a bi-directional I/O port.

RA0/AN0

RA0

AN0

227

I/O

I

TTL

Digital I/O.

Analog input 0.

RA1/AN1

RA1

AN1

328

I/O

I

TTL

Digital I/O.

Analog input 1.

RA2/AN2

RA2

AN2

41

I/O

I

TTL

Digital I/O.

Analog input 2.

RA3/AN3/VREF

RA3

AN3

VREF

52

I/O

I

TTL

Digital I/O.

Analog input 3.

A/D reference voltage input.

RA4/T0CKI

RA4

T0CKI

64

I/O

I

ST

Digital I/O – Open drain when configured as output.

Timer0 external clock input.

RA5/SS/AN4

RA5

SS

AN4

75

I/O

I

TTL

Digital I/O.

SPI slave select input.

Analog input 4.

Legend:

I = input

O = output

I/O = input/output

P = power

— = Not used

TTL = TTL input

ST = Schmitt Trigger input

Note

1:

This buffer is a Schmitt Trigger input when configured as the external interrupt.

2:

This buffer is a Schmitt Trigger input when used in Serial Programming mode.

3:

This buffer is a Schmitt Trigger input when configured in RC Oscillator mode and a CMOS input otherwise.

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