DS28E22Q+T

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DS28E22Q+T is an all-in-one solution for an I2C, 1-Wire interface and cryptographic application. It combines a unique One Time Programmable (OTP) memory, I2C with 1-Wire bridge and integrated SHA-256 cryptographic engine for authenticating valuable data and messages. It is a stand-alone device that requires no external components and provides a secure, low-cost solution for authenticating a device or its data.

Memory:

DS28E22Q+T has a unique, One Time Programmable (OTP) memory. This memory is a non-volatile memory which stores user-programmed data and is locked when programming is completed. The device only accepts programming once thus providing a secure, non-volatile memory solution. The memory is programmed using a proprietary programming algorithm and can be used to store authentication data such as passwords, serial numbers, product codes, and other valuable data.

I2C and 1-Wire Bridge:

The device also offers an I2C bus with a 1-Wire bridge. The I2C interface has a 400 kHz maximum data rate and supports up to 400 kHz SCL clock rates. The 1-Wire bus operates at 5 kHz data rate and is capable of supplying up to 15mA for sensor power. This feature allows sensors to be powered directly from the 1-Wire bus which helps reduce design complexity and cost. The 1-Wire bridge also offers enhanced 1-Wire communication capabilities such as read-only or write-protect functions, reset pulse and software reset functions, and temperature control functions.

Cryptographic Engine:

The device also has an integrated SHA-256 cryptographic engine which can be used to authenticate valuable data and messages. The cryptographic engine provides users with a secure, low-cost solution for authenticating a device or its data. It uses a strong authentication algorithm, combined with a One Time Programmable (OTP) memory, which is a non-volatile memory that stores user-programmed data and is locked when programming is completed.

The SHA-256 algorithm is an industry standard for securing data and messages. This algorithm is used in the encryption or signature of data or messages to protect it from unauthorized access or tampering. It uses a 256 bit key for encryption which provides a very high degree of security. The SHA-256 algorithm has been proven to be effective and is widely used by companies and organizations for authentication, authorization and protection of data and messages.

The device also offers several security features such as write-only memory, on-chip cryptographic esalation (CCE) and symmetric key cryptography. Write-only memory prevents data from being modified after programming. On-chip cryptographic esalation (CCE) is an optional feature which provides an additional layer of security to the device. Symmetric key cryptography is a technique used to securely exchange messages between two or more parties using the same secret key.

In summary, DS28E22Q+T offers a complete solution for an I2C, 1-Wire interface and cryptographic application. It combines a unique One Time Programmable (OTP) memory, I2C with 1-Wire bridge and integrated SHA-256 cryptographic engine for authenticating valuable data and messages. This provides a secure, low-cost solution for authenticating a device or its data.

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