HCS412 - Microchip

The pictures are for reference only, and the specific specifications can be found in the product manual.

Part No

HCS412
Manufacturer

Microchip
ChipWorker Part#

CW544094303
RoHS

Lead free / RoHS Compliant
Description

The HCS412 combines the patented KEELOQ® code hopping technology and bi-directional transponder challenge-and-response security into a single chip solution for logical and physical access control. High security learning mechanisms mak
Documentation

Datasheet

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HCS412 Specifications

Attribute	Attribute Value

Part Number	HCS412
Manufacturer	Microchip
ChipWorker Part#	CW544094303
Documentation	Datasheet
	expand all
RoHS	RoHS Compliant

Product Description

GENERAL DESCRIPTION
The HCS412 combines patented KEELOQ code hopping technology with bi-directional transponder challenge-and-response security into a single chip solution for logical and physical access control.
When used as a code hopping encoder, the HCS412 is ideally suited to keyless entry systems; vehicle and garage door access in particular. The same HCS412 can also be used as a secure bi-directional transponder for contactless token verification. These capabilities make the HCS412 ideal for combined secure access control and identification applications, dramatically reducing the cost of hybrid transmitter/transponder solutions.
FEATURES
Security
• Programmable 64-bit encoder crypt key
• Two 64-bit IFF keys
• Keys are read protected
• 32-bit bi-directional challenge and response using one of two possible keys
• 69-bit transmission length
• 32-bit hopping code,
• 37-bit nonencrypted portion
• Programmable 28/32-bit serial number
• 60-bit, read protected seed for secure learning
• Two IFF encryption algorithms
• Delayed counter increment mechanism
• Asynchronous transponder communication
• Transmissions include button Queuing information
Operating
• 2.0V to 6.3V operation
• Three switch inputs: S2, S1, S0 – seven functions
• Battery-less bi-directional transponder capability
• Selectable baud rate and code word blanking
• Automatic code word completion
• Battery low detector
• PWM or Manchester data encoding
• Combined transmitter, transponder operation
• Anticollision of multiple transponders
• Passive proximity activation
• Device protected against reverse battery
• Intelligent damping for high Q LC-circuits
• 100 mVPP sensitive LC input
Typical Applications
• Automotive remote entry systems
• Automotive alarm systems
• Automotive immobilizers
• Gate and garage openers
• Electronic door locks (Home/Office/Hotel)
• Burglar alarm systems
• Proximity access control
Other
• Simple programming interface
• On-chip tunable RC oscillator, ± 10%
• On-chip EEPROM
• 64-bit user EEPROM in Transponder mode
• Battery-low LED indication
• Serialized Quick Turn Programming (SQTPSM)
• 8-pin PDIP/SOIC
• RF Enable output
• ASK and FSK PLL interface option
• Built in LC input amplifier

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Ordering Information

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- Please check the technical specifications of the products when ordering.
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- Carefully tested and packaged by ChipWorker
- Vacuum packed
- Anti-static packaging
- Anti-vibration foam
- Income quality control (IQC), 800+ qualified distributors.
- Authorities test the chip to ensure the quality, authenticity and safety of your device.
- Decapsulation control
- X-ray inspection
- XRF inspection
- Electrical testing
- Surface testing

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