Datasheet

ManualsBrandsMICROCHIP TECHNOLOGY ManualsMicrocontrollers, Microprocessors & QuartzesEmbedded microcontroller SOIC 18 8-Bit 4 MHz I/O number 13

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1997 Microchip Technology Inc. DS30272A-page 9

PIC16C71X

TABLE 3-1: PIC16C710/71/711/715 PINOUT DESCRIPTION

Pin Name

DIP

Pin#

SSOP

Pin#

(4)

SOIC

Pin#

I/O/P

Type

Buffer

Type

Description

OSC1/CLKIN 16 18 16 I

ST/CMOS

(3)

Oscillator crystal input/external clock source input.

OSC2/CLKOUT 15 17 15 O — Oscillator crystal output. Connects to crystal or resonator in crystal

oscillator mode. In RC mode, OSC2 pin outputs CLKOUT which has

1/4 the frequency of OSC1, and denotes the instruction cycle rate.

MCLR/V

4 4 4 I/P ST Master clear (reset) input or programming voltage input. This pin is

an active low reset to the device.

PORTA is a bi-directional I/O port.

RA0/AN0 17 19 17 I/O TTL RA0 can also be analog input0

RA1/AN1 18 20 18 I/O TTL RA1 can also be analog input1

RA2/AN2 1 1 1 I/O TTL RA2 can also be analog input2

RA3/AN3/V

REF

2 2 2 I/O TTL RA3 can also be analog input3 or analog reference voltage

RA4/T0CKI 3 3 3 I/O ST RA4 can also be the clock input to the Timer0 module. Output is

open drain type.

PORTB is a bi-directional I/O port. PORTB can be software pro-

grammed for internal weak pull-up on all inputs.

RB0/INT 6 7 6 I/O TTL/ST

(1)

RB0 can also be the external interrupt pin.

RB1 7 8 7 I/O TTL

RB2 8 9 8 I/O TTL

RB3 9 10 9 I/O TTL

RB4 10 11 10 I/O TTL Interrupt on change pin.

RB5 11 12 11 I/O TTL Interrupt on change pin.

RB6 12 13 12 I/O TTL/ST

(2)

Interrupt on change pin. Serial programming clock.

RB7 13 14 13 I/O TTL/ST

(2)

Interrupt on change pin. Serial programming data.

5 4, 6 5 P — Ground reference for logic and I/O pins.

14 15, 16 14 P — Positive supply for logic and I/O pins.

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.

4: The PIC16C71 is not available in SSOP package.