HCS370_11 MICROCHIP [Microchip Technology], HCS370_11 Datasheet

HCS370_11

Manufacturer Part Number

HCS370_11

Description

Manufacturer

MICROCHIP [Microchip Technology]

Datasheet

1.HCS370_11.pdf (42 pages)

Current page: 1 of 42
Download datasheet (957Kb)

FEATURES

Security

• Two programmable 32-bit serial numbers

• Two programmable 64-bit encoder keys

• Two programmable 60-bit seed values

• Each transmission is unique

• 67/69-bit transmission code length

• 32-bit hopping code

• Crypt keys are read protected

Operating

• 2.05-5.5V operation

• Six button inputs

• 15 functions available

• Four selectable baud rates

• Selectable minimum code word completion

• Battery low signal transmitted to receiver

• Nonvolatile synchronization data

• PWM, VPWM, PPM, and Manchester modulation

• Button queue information transmitted

• Dual Encoder functionality

Other

• On-chip EEPROM

• On-chip tuned oscillator (±10% over voltage and

• Button inputs have internal pull-down resistors

• LED output

• PLL control for ASK and FSK

• Low external component count

• Step-up voltage regulator

Typical Applications

The HCS370 is ideal for Remote Keyless Entry (RKE)

applications. These applications include:

• Automotive RKE systems

• Automotive alarm systems

• Automotive immobilizers

• Gate and garage door openers

• Identity tokens

• Burglar alarm systems

2011 Microchip Technology Inc.

temperature)

Code Hopping Encoder

PACKAGE TYPES

HCS370 BLOCK DIAGRAM

GENERAL DESCRIPTION

The HCS370 is a code hopping encoder designed for

secure Remote Keyless Entry (RKE) and secure

remote control systems. The HCS370 utilizes the

rates high security, a small package outline, and low

cost to make this device a perfect solution for unidirec-

tional authentication systems and access control sys-

tems.

The HCS370 combines a hopping code generated by a

nonlinear encryption algorithm, a serial number, and

status bits to create a secure transmission code. The

length of the transmission eliminates the threat of code

scanning and code grabbing access techniques.

RFEN

LED

STEP

PDIP, SOIC,

TSSOP

DATA

OQ ®

Step-up

regulator

code hopping technology, which incorpo-

SLEEP/S5

SHIFT

RESET circuit

LED driver

Oscillator

RF Enable

EEPROM

HCS370

32-bit SHIFT register

Button input port

Controller

DS41111E-page 1

Encoder

Vss

LED

DATA

RFEN

STEP

Power

latching

and

switching

SLEEP

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