ISL6296 Intersil Corporation, ISL6296 Datasheet

ISL6296

Manufacturer Part Number

ISL6296

Description

FlexiHash

Manufacturer

Intersil Corporation

Datasheet

1.ISL6296.pdf (19 pages)

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FlexiHash™ For Battery Authentication

The ISL6296 is a highly cost-effective fixed-secret hash

engine based on Intersil’s FlexiHash™ technology. The

device authentication is achieved through a challenge-

response scheme customized for low-cost applications,

where cloning via eavesdropping without knowledge of the

device’s secret code is not economically viable. When used

for its intended applications, the ISL6296 offers the same

level of effectiveness as other significantly more expensive

high maintenance monetary-grade hash algorithm and

authentication schemes.

The ISL6296 has a wide operating voltage range, and is

suitable for direct powering from a 1-cell Li-Ion/Li-Poly or a

3-cell series NiMH battery pack. The ISL6296 can also be

3.3V or higher. The device connects directly to the cell

terminals of a battery pack, and includes on-chip voltage

regulation circuit, POR, and a non-crystal based oscillator for

bus timing reference.

Communication with the host is achieved through a single-

wire XSD interface - a light-weight subset of Intersil’s ISD bus

interface. The XSD bus is compatible for use with serial ports

offered by all 8250 compatible UART’s or a single GPIO

(general purpose input and output) pin of a microprocessor.

A clone prevention solution utilizing the ISL6296 offers

safety and revenue protection at the lowest cost and power,

and is suitable for protection against after-market

replacement for a wide variety of low-cost applications.

Pinouts

VDD

VSS

VDD

VSS

N/C

(8 LD 2X3TDFN)

(5 LD SOT-23)

TOP VIEW

ISL6296

Data Sheet

XSD

TIO

XSD

TIO

FlexiHash is a trademark of Intersil Americas Inc. All other trademarks mentioned are the property of their respective owners.

1-888-INTERSIL or 1-888-468-3774

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

Features

• Challenge-response based authentication scheme using

• Fast and flexible authentication process. Multi-pass

• 16x8 OTP ROM stores up to three sets of 32-Bit host-

• FlexiHash engine uses two sets of 32-Bit secrets for

• Non-unique mapping of the secret key to an 8-Bit

• Supports 1-cell Li-Ion/Li-Poly and 3-cell series NiMH

• XSD single-wire host bus interface communicates with all

• True “Zero Power” Sleep mode - automatically entered

• 5 Ld SOT-23 and 8 Ld TDFN (2mm x 3mm) packages

• -20°C to +85°C operating temperature range

• Pb-free plus anneal available (RoHS compliant)

Applications

• Battery Pack Authentication

• Printer Cartridges

• Add-on Accessories

• Other Non-Monetary Authentication Applications

Related Literature

• Application Note AN1165 “ISL6296 Evaluation Kit”

• Application Note AN1166 “FlexiHash™ Engine Algorithm”

• Application Note AN1167 “Implementing XSD Host Using

• Technical Brief TB363 “Guidelines for Handling and

”

32-Bit challenge code and 8-Bit authentication code.

authentication can be used to achieve the highest security

level if necessary.

selectable secrets with additional programmable memory

for storage of up to 48 bits of ID code and/or pack

information.

authentication code generation.

authentication code maximizes hacking difficulty due to

need for exhaustive key search (superior to SHA-1).

battery packs (2.6V ~ 4.8V operation), or powered by the

XSD bus.

8250-compatible UART’s or a single GPIO. Supports CRC

on read data and transfer bit-rate up to 23kbps.

after a bus inactivity time-out period

a GPIO”

Processing Moisture Sensitive Surface Mount Devices

(SMDs)

January 17, 2007

Intersil (and design) is a registered trademark of Intersil Americas Inc.

ISL6296

FN9201.1

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