PIC16F87 datasheet(8/230 Pages) MICROCHIP

8 / 230 page

PIC16F87/88

DS30487D-page 8

 2002-2013 Microchip Technology Inc.

TABLE 1-2:

PIC16F87/88 PINOUT DESCRIPTION

Pin Name

PDIP/

SOIC

Pin#

SSOP

Pin#

QFN

Pin#

I/O/P

Type

Buffer

Type

Description

PORTA is a bidirectional I/O port.

RA0/AN0

RA0

AN0

I/O

TTL

Analog

Bidirectional I/O pin.

Analog input channel 0.

RA1/AN1

RA1

AN1

I/O

TTL

Analog

Bidirectional I/O pin.

Analog input channel 1.

RA2/AN2/CVREF/VREF-

RA2

AN2

CVREF

VREF-(4)

I/O

TTL

Analog

Bidirectional I/O pin.

Analog input channel 2.

Comparator VREF output.

A/D reference voltage (Low) input.

RA3/AN3/VREF+/C1OUT

RA3

AN3

VREF+(4)

C1OUT

I/O

TTL

Analog

Bidirectional I/O pin.

Analog input channel 3.

A/D reference voltage (High) input.

Comparator 1 output.

RA4/AN4/T0CKI/C2OUT

RA4

AN4(4)

T0CKI

C2OUT

I/O

Analog

Bidirectional I/O pin.

Analog input channel 4.

Clock input to the TMR0 timer/counter.

Comparator 2 output.

RA5/MCLR/VPP

RA5

MCLR

VPP

441

–

Input pin.

Master Clear (Reset). Input/programming voltage

input. This pin is an active-low Reset to the device.

Programming voltage input.

RA6/OSC2/CLKO

RA6

OSC2

CLKO

I/O

–

Bidirectional I/O pin.

Oscillator crystal output. Connects to crystal or

resonator in Crystal Oscillator mode.

In RC mode, this pin outputs CLKO signal which has

1/4 the frequency of OSC1 and denotes the

instruction cycle rate.

RA7/OSC1/CLKI

RA7

OSC1

CLKI

I/O

ST/CMOS(3)

–

Bidirectional I/O pin.

Oscillator crystal input.

External clock source input.

Legend:

I = Input

= Output

I/O = Input/Output

P = Power

– = Not used

TTL = TTL Input

ST = Schmitt Trigger Input

Note

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

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

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

PIC16F88 devices only.

The CCP1 pin is determined by the CCPMX bit in Configuration Word 1 register.

PIC16F87 Datasheet(PDF) 8 Page - Microchip Technology

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