PIC16CR56AT-ISO View Datasheet(PDF) - Microchip Technology

Part Name

Description

Manufacturer

PIC16CR56AT-ISO

EPROM/ROM-Based 8-bit CMOS Microcontroller Series

Microchip Technology 

PIC16C5X

TABLE 3-1: PINOUT DESCRIPTION - PIC16C54, PIC16CR54, PIC16C56, PIC16CR56, PIC16C58,

PIC16CR58

Pin Name

Pin Number

Pin Buffer

DIP SOIC SSOP Type Type

Description

RA0

RA1

RA2

RA3

RB0

RB1

RB2

RB3

RB4

RB5

RB6

RB7

T0CKI

17 17 19 I/O TTL Bi-directional I/O port

18 18 20 I/O TTL

1

1

1 I/O TTL

2

2

2 I/O TTL

6

6

7 I/O TTL Bi-directional I/O port

7

7

8 I/O TTL

8

8

9 I/O TTL

9

9

10 I/O TTL

10 10 11 I/O TTL

11 11 12 I/O TTL

12 12 13 I/O TTL

13 13 14 I/O TTL

3

3

3

I

ST Clock input to Timer0. Must be tied to VSS or VDD, if not in

use, to reduce current consumption.

MCLR/VPP

4

4

4

I

OSC1/CLKIN

16

16

18

I

ST Master clear (RESET) input/programming voltage input.

This pin is an active low RESET to the device. Voltage on

the MCLR/VPP pin must not exceed VDD to avoid unin-

tended entering of Programming mode.

ST Oscillator crystal input/external clock source input.

OSC2/CLKOUT 15 15 17 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.

VDD

14 14 15,16 P

— Positive supply for logic and I/O pins.

VSS

5

5

5,6 P

— Ground reference 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

 1997-2013 Microchip Technology Inc.

Preliminary

DS30453E-page 11

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