HCS200-IP datasheet(7/16 Pages) MICROCHIP

Teilenummer	HCS200-IP

Bauteilbeschribung	KEELOQ CODE HOPPING ENCODER

PDF	16 Pages

Scroll/Zoom	100%

Hersteller	MICROCHIP [Microchip Technology]

Direct Link	http://www.microchip.com

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7 / 16 page

Preliminary

DS40138A-page 7

HCS200

FIGURE 4-1:

CODE WORD TRANSMISSION FORMAT

FIGURE 4-2:

CODE WORD ORGANIZATION

FIGURE 4-3:

SYNCHRONOUS TRANSMISSION MODE

FIGURE 4-4:

TRANSMISSION WORD FORMAT DURING SYNCHRONOUS TRANSMISSION MODE

LOGIC ‘0’

LOGIC ‘1’

Bit

Period

Preamble

Header

Encrypted Portion

of Transmission

Fixed Portion of

Transmission

Guard

Time

THOP

TFIX

Fixed

(1 bit)

VLOW

(1 bit)

Button

Status

(4 bits)

28-bit

Serial Number

Button

Status

(4 bits)

Discrimina-

tion bits

(12 bits)

16-bit

Sync Value

1 bit of Status

1 bit Fixed

Serial Number and

Button Status (32 bits)

32 bits of Encrypted Data

Fixed Code Data

Encrypted Code Data

66 bits

of Data

Transmitted

t = 50 ms

“01,10,11”

PWM

S[1:0]

Transmission Direction

Reserved

Padding

Function

Code

Serial Number

Data Word

Sync Counter

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