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HCS365, HCS365/P, HCS365/S

Table of contents:
Info of HCS365
Info of HCS365/P
Info of HCS365/S

HCS365, HCS365/P, HCS365/S Selling Leads, Datasheet

MFG:Microchip Technology Category:Integrated Circuits (ICs) Package Cooled:07+ D/C:DIP/SMD

HCS365, HCS365/P, HCS365/S Datasheet download

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Part Number: HCS365/P

Category: Integrated Circuits (ICs)

MFG: Microchip Technology

Package Cooled: 07+

D/C: DIP/SMD

Description: IC CODE HOPPING ENCODER 8-DIP

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HCS365 General Description

The HCS365 is a code hopping encoder designed for secure Remote Keyless Entry (RKE) and secure remote control systems. The HCS365 utilizes the KEELOQ? code hopping technology, which incorporates high security, a small package outline, and low cost to make this device a perfect solution for unidirectional authentication systems and access control systems.

The HCS365 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.

The crypt key, serial number, and configuration data are stored in an EEPROM array which is not accessible via any external connection. The EEPROM data is programmable but read protected. The data can be verified only after an automatic erase and programming operation. This protects against attempts to gain access to keys or manipulate synchronization values. In addition, the HCS365 supports a dual encoder. This allows two manufacturers to use the same device without having to use the same manufacturer's code in each of the encoders. The HCS365 provides an easy to use serial interface for programming the necessary keys, system parameters, and configuration data.

HCS365 Maximum Ratings

Ambient temperature under bias....................................................-40°C to +125°C
Storage temperature .................................................................... -65°C to +150°C
Voltage on V_DD w/respect to V_SS .......................................................... -0.3 to +7.5V
Voltage on LED w/respect to V_SS ............................................................-0.3 to +11V
Voltage on all other pins w/respect to V_SS ...................................-0.3V to V_DD+ 0.3V
Total power dissipation (Note 1) .....................................................................500 mW
Maximum current out of V_SS pin .......................................................................100 mA
Maximum current into V_DD pin ..........................................................................100 mA
Input clamp current, I_IK (V_I < 0 or V_I > V_DD) ..................................................± 20 mA
Output clamp current, IOK (V_o < 0 or V_o >V_DD)...............................................± 20 mA
Maximum output current sunk by any Output pin................................................25 mA
Maximum output current sourced by any Output pin ..........................................25 mA
*Notice: Stresses above those listed under "Maximum ratings" may cause permanent damage to the device. This is a
stress rating only and functional operation of the device at those or any other conditions above those indicated in the
operational listings of this specification is not implied. Exposure to maximum rating conditions for extended periods may
affect device reliability.
Note 1: Power dissipation is calculated as follows: Pdis=VDD x {IDD - Â IOH} + Â {(VDD-VOH) x IOH} + Â(VOl x IOL).

HCS365 Features

Security
• Two programmable 32-bit serial numbers
• Two programmable 64-bit crypt 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
• Four 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 temperature)
• Button inputs have internal pull-down resistors
• LED output
• PLL control for ASK and FSK
• Low external component count

HCS365 Typical Application

The HCS365 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

HCS365 Connection Diagram

HCS365/P Parameters

Technical/Catalog Information	HCS365/P
Vendor	Microchip Technology
Category	Integrated Circuits (ICs)
Type	Code Hopping Encoder
Applications	Remote Secure Access, Keyless Entry
Package / Case	8-DIP (300 mil)
Packaging	Tube
Lead Free Status	Lead Free
RoHS Status	RoHS Compliant
Other Names	HCS365 P HCS365P

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