PIC16F570 datasheet(9/134 Pages) MICROCHIP

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DS40001652C-page 9

PIC16F527

TABLE 3-2:

PIC16F527 PINOUT DESCRIPTION

Name

Function

Input Type

Output Type

Description

RA0/AN0/C1IN+/ICSPDAT

RA0

TTL

CMOS

Bidirectional I/O pin. It can be software

programmed for internal weak pull-up and

wake-up from Sleep on pin change.

ICSPDAT

CMOS

ICSP™ mode Schmitt Trigger.

C1IN+

—

Comparator 1 input.

AN0

—

ADC channel input.

RA1/AN1/C1IN-/CVREF/

ICSPCLK

RA1

TTL

CMOS

Bidirectional I/O pin. It can be software

programmed for internal weak pull-up and

wake-up from Sleep on pin change.

ICSPCLK

—

ICSP™ mode Schmitt Trigger.

C1IN-

—

Comparator 1 input.

CVREF

—

Programmable Voltage Reference output.

AN1

—

ADC channel input.

RA2/AN2/C1OUT/T0CKI

RA2

TTL

CMOS

Bidirectional I/O port.

C1OUT

—

CMOS

Comparator 1 output.

AN2

—

ADC channel input.

T0CKI

—

Timer0 Schmitt Trigger input pin.

RA3/MCLR/VPP

RA3

TTL

—

Standard TTL input with weak pull-up.

MCLR

—

Master Clear (Reset). When configured as

MCLR, this pin is an active-low Reset to the

device. Voltage on MCLR/VPP must not

exceed VDD during normal device operation or

the device will enter Programming mode.

Weak pull-up is always on if configured as

MCLR.

VPP

—

Test mode high-voltage pin.

RA4/AN3/OSC2/CLKOUT

RA4

TTL

CMOS

Bidirectional I/O pin. It can be software

programmed for internal weak pull-up and

wake-up from Sleep on pin change.

OSC2

—

XTAL

Oscillator crystal output. Connections to crystal

or resonator in Crystal Oscillator mode (XT, HS

and LP modes only, PORTB in other modes).

CLKOUT

—

CMOS

EXTRC/INTRC CLKOUT pin (FOSC/4).

AN3

—

ADC channel input.

RA5/OSC1/CLKIN

RA5

TTL

CMOS

Bidirectional I/O port.

OSC1

XTAL

—

XTAL oscillator input pin.

CLKIN

—

EXTRC Schmitt Trigger input.

RB4/OP2-

RB4

TTL

CMOS

Bidirectional I/O port.

OP2-

—

Op amp 2 inverting input.

RB5/OP2+

RB5

TTL

CMOS

Bidirectional I/O port.

OP2+

—

Op amp 2 non-inverting input.

RB6

TTL

CMOS

Bidirectional I/O port.

RB7

TTL

CMOS

Bidirectional I/O port.

RC0/AN4/C2IN+

RC0

CMOS

Bidirectional I/O port.

AN4

—

ADC channel input.

C2IN+

—

Comparator 2 input.

Legend:

I = Input, O = Output, I/O = Input/Output, P = Power, — = Not Used, TTL = TTL input, ST = Schmitt Trigger input,

HV = High Voltage, AN = Analog Voltage

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