DS28E81+T

Product Overview

• Category: Integrated Circuit
• Use: Secure Authenticator
• Characteristics: High Security, Low Power Consumption
• Package: 8-Pin TDFN
• Essence: Authentication and Encryption
• Packaging/Quantity: Tape & Reel, 2500 units per reel

Specifications

• Operating Voltage: 1.7V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• Communication Interface: I2C
• Memory Size: 1Kbit EEPROM
• Security Features: SHA-256 Cryptographic Engine, Unique 64-Bit ROM Identification Number

Pin Configuration

The DS28E81+T has the following pin configuration:

| Pin Name | Description | |----------|-------------| | VDD | Power Supply | | GND | Ground | | SDA | I2C Data | | SCL | I2C Clock | | ALERT | Interrupt Output | | RSTZ | Reset Input | | NC | No Connect | | PIO1 | Programmable I/O 1 |

Functional Features

• Secure Storage of Secrets
• Mutual Authentication
• Encrypted Communication
• Tamper Detection
• Counterfeit Prevention

Advantages

• Robust Security Measures
• Low Power Consumption
• Small Form Factor
• Easy Integration with Existing Systems
• Cost-Effective Solution

Disadvantages

• Limited Memory Capacity
• Requires I2C Communication Protocol Support
• Vulnerable to Physical Attacks (if not properly secured)

Working Principles

The DS28E81+T is designed to provide secure authentication and encryption capabilities. It utilizes a SHA-256 cryptographic engine for generating and verifying digital signatures. The unique 64-bit ROM identification number ensures device authenticity and prevents counterfeiting.

The device communicates over the I2C interface, allowing seamless integration with various microcontrollers and systems. It offers secure storage of secrets, mutual authentication between devices, and encrypted communication channels to protect sensitive data.

Additionally, the DS28E81+T incorporates tamper detection mechanisms to safeguard against physical attacks. It can detect unauthorized access attempts and trigger an alert, providing an extra layer of security.

Detailed Application Field Plans

The DS28E81+T finds applications in various industries where secure authentication is crucial. Some potential application fields include:

1. IoT Devices: Ensuring secure communication and data integrity in connected devices.
2. Medical Equipment: Protecting patient data and preventing unauthorized access.
3. Automotive Industry: Securing vehicle electronics and preventing keyless entry system hacks.
4. Smart Home Systems: Authenticating users and protecting home automation networks.
5. Industrial Automation: Safeguarding critical infrastructure and preventing unauthorized control.

Alternative Models

• DS28E81-100+: Similar specifications but with a larger memory size (100Kbit EEPROM).
• DS28E81-500+: Similar specifications but with an extended temperature range (-40°C to +125°C).
• DS28E81-2000+: Similar specifications but with a higher operating voltage range (1.7V to 5.5V).

These alternative models offer different memory capacities, temperature ranges, or operating voltage options to cater to specific application requirements.

In conclusion, the DS28E81+T is a highly secure authenticator integrated circuit that provides robust authentication and encryption capabilities. Its small form factor, low power consumption, and various security features make it suitable for a wide range of applications requiring secure communication and data protection.