DS28E07+W

DS28E07+ is an EEPROM chip specifically designed for secure digital key storage. It combines the security of Maxim’s DS28E07 with the compatibility of a W-family device. The combination of these two technologies, makes this chip ideal for applications such as automotive, consumer, industrial, and medical device protection, which use unique keys to set and protect data.

DS28E07+W Application Field

The DS28E07+W has a variety of uses in various fields. In the automotive industry, it is used to store high-security keys used to unlock a vehicle or enable certain functions such as remote unlock. The DS28E07+W also can be used in consumer applications such as Wi-Fi, Bluetooth, and connectivity devices which use or generate cryptographic keys which need to be securely stored. Industrial applications such as digital signing and authentication devices can also benefit from the DS28E07+W to securely store authentication keys. Additionally, the chip is suitable for medical devices that need to securely store personal information.

DS28E07+W Working Principle

The DS28E07+W provides a secure platform for storing digital keys or authentication data. It is designed to prevent any form of hacking or tampering with the data in the chip. The chip works by assigning an individual 8-byte UID to each chip, which is used to authenticate the chip’s data during each interaction with the host device.

The chip also has a configurable I²C write protection feature which prevents the chip data from being overwritten accidentally or maliciously. Additionally, the chip is tamper-proof, which means that any attempts to open or tamper with the contents of the chip will trigger a secure erase feature, completely erasing all the data stored.

The chip also has a power-fail protection feature which means that, in the event of a power-failure, the encrypted data stored in the chip is not lost. The data is stored in non-volatile memory which is powered by a low-leakage capacitor.

Finally, the chip is designed with a one-time programmable memory which allows for permanent storage of encryption keys or passwords.

Conclusion

The DS28E07+W is an EEPROM chip designed to securely store digital keys or authentication data. It works by assigning an 8-byte UID to each chip, which is used to authenticate the data during each interaction with the host device. The chip is suitable for a variety of applications in different industries such as the automotive, consumer, industrial, and medical fields. It includes features such as I²C write protection, tamper-proofing, power-fail protection and one-time programmable memory, which make it a secure and reliable chip for storing confidential data.