PIC16F636-E/P Microchip Technology, PIC16F636-E/P Datasheet

PIC16F636-E/P

Manufacturer Part Number

PIC16F636-E/P

Description

IC MCU FLASH 2KX14 14DIP

Manufacturer

Microchip Technology

Series

PIC® 16Fr

Datasheets

1.PIC16F616T-ISL.pdf (8 pages)

2.PIC12F635-ISN.pdf (234 pages)

3.PIC16F636-ISL.pdf (8 pages)

4.PIC16F636-ISL.pdf (4 pages)

Specifications of PIC16F636-E/P

Core Processor

PIC

Core Size

8-Bit

Speed

20MHz

Peripherals

Brown-out Detect/Reset, LVD, POR, WDT

Number Of I /o

Program Memory Size

3.5KB (2K x 14)

Program Memory Type

FLASH

Ram Size

128 x 8

Voltage - Supply (vcc/vdd)

2 V ~ 5.5 V

Oscillator Type

Internal

Operating Temperature

-40°C ~ 125°C

Package / Case

14-DIP (0.300", 7.62mm)

For Use With

AC164039 - MODULE SKT PROMATE II 20DIP/SOICAC162057 - MPLAB ICD 2 HEADER 14DIPACICE0207 - MPLABICE 14P 300 MIL ADAPTER

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Eeprom Size

Data Converters

Connectivity

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INTRODUCTION

This application note describes the general use of the

PIC12F635/PIC16F636/PIC16F639

module. Technical Brief TB076, “Using the K

Compatible Cryptographical Module” (DS91076) and

the

Agreement are needed to use the Cryptographic

module.

Obtaining TB076 requires the completion of a licensing

agreement that must be obtained through the Microchip

Technology Inc. web site (www.microchip.com) and

approved by the Microchip Technology Inc. Legal

Department. The agreement form is located under the

site (www.microchip.com/keeloq).

Technical Brief TB076 describes how to implement

cryptography on these products using the hardware

peripheral. The Cryptographic module is capable of

handling K

well as application specific encoding/decoding.

After receiving approval by the Microchip Technology

Legal Department, customers will receive Application

Note AN249, “K

PIC12F6XX” (DS00249) as well as the TB076 Technical

Brief on a CD ROM. Additionally, the disk includes

firmware implementations of the K

algorithm for PIC12, PIC16 and PIC18 devices with

minor modifications, the algorithms for the PIC12 and

PIC16 devices can be adapted to the PIC10 series of

PICmicro

Additionally,

decoding routines on PICmicro microcontrollers are also

available by ordering the K

Please contact your local Microchip Technology sales

office to order this CD-ROM.

PIC12F635/PIC16F636/PIC16F639 Cryptographic Module General Overview

Author:

Note:

corresponding

Authentication Products section of our web

microcontrollers.

If the PIC12F635/PIC16F636/PIC16F639

devices are designed into a system

without using the K

Cryptographic module, then a licensing

agreement is not required.

Ken Dietz

Microchip Technology Inc.

firmware

compatible encoding/decoding, as

libraries

Transmitter Shell Using the

CD-ROM (DS40038).

Encoder

for

Cryptographic

implementing

Compatible

encryption

License

CRYPTOGRAPHIC MODULE

FEATURES

The PIC12F635/PIC16F636/PIC16F639 devices can

be used as encoders or decoders based on the

configuration

cryptographic peripheral only does the actual data

encryption and decryption. The peripheral requires that

the following internal RAM locations are initialized

before starting a K

FIGURE 1:

The conversion is then started by setting the GO/DONE

bit in CRCON register and waiting for it to be cleared by

the hardware. The peripheral can also generate an

interrupt if enabled, which can also be used to poll for the

end of the cryptographic process.

A main program in the C language will typically look like

Example 1.

EXAMPLE 1:

void main(){

Load_Encryption_Key()

Load_ICR()

Load_CSR()

//Start conversion by setting GO/DONE bit

//Wait for interrupt or GO/DONE to be cleared

}

Load a 64-bit encryption/decryption key into

KEY<7:0>. This is completed in two 32-bit steps

through the use of the CRCON and CRDAT<3:0>

registers.

Load the Iteration Counter (ICR). This is also

loaded through the CRCON and CRDAT0

Load of the actual 32 bits of data using the

CRCON and CRDAT<3:0> registers.

32-Bit Value

settings

Encryption Key

CRYPTOGRAPHIC MODULE

Cipher

32-Bit

Block

64-Bit

compatible conversion:

the

TB086

Encoded/Decoded

peripheral.

DS91086A-page 1

32-Bit

Value

The

Related parts for PIC16F636-E/P

PIC16F636-E/P Summary of contents

Page 1

... PIC12F635/PIC16F636/PIC16F639 Cryptographic Module General Overview Author: Ken Dietz Microchip Technology Inc. INTRODUCTION This application note describes the general use of the PIC12F635/PIC16F636/PIC16F639 module. Technical Brief TB076, “Using the K Compatible Cryptographical Module” (DS91076) and ® the corresponding K L Encoder EE OQ Agreement are needed to use the Cryptographic module ...

Page 2

... CONCLUSION This document describes the general use of the Cryptographic module included on the PIC12F635/ PIC16F636/PIC16F639. description of the type of supporting firmware designers can expect to implement to effectively use the Cryptographic explanation of the necessity and process of obtaining a licensing agreement, the application note and technical brief relating to this module was included ...

Page 3

... PowerCal, PowerInfo, PowerMate, PowerTool, rfLAB, rfPICDEM, Select Mode, Smart Serial, SmartTel, Total Endurance and WiperLock are trademarks of Microchip Technology Incorporated in the U.S.A. and other countries. SQTP is a service mark of Microchip Technology Incorporated in the U.S.A. All other trademarks mentioned herein are property of their respective companies. ...

Page 4

... Fax: 65-6334-8850 Taiwan - Kaohsiung Tel: 886-7-536-4818 Fax: 886-7-536-4803 Taiwan - Taipei Tel: 886-2-2500-6610 Fax: 886-2-2508-0102 Taiwan - Hsinchu Tel: 886-3-572-9526 Fax: 886-3-572-6459 © 2005 Microchip Technology Inc. EUROPE Austria - Weis Tel: 43-7242-2244-399 Fax: 43-7242-2244-393 Denmark - Ballerup Tel: 45-4450-2828 Fax: 45-4485-2829 France - Massy Tel: 33-1-69-53-63-20 ...

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