ATECC508A-SSHDA-T IC AUTHENTICATION CHIP 8SOIC

Description

The ATECC508A includes an EEPROM array which can be used for storage of up to 16 keys, certificates, miscellaneous read/write, read-only or secret data, consumption logging, and security configurations. Access to the various sections of memory can be restricted in a variety of ways and then the configuration can be locked to prevent changes. The ATECC508A features a wide array of defense mechanisms specifically designed to prevent physical attacks on the device itself, or logical attacks on the data transmitted between the device and the system. Hardware restrictions on the ways in which keys are used or generated provide further defense against certain styles of attack. Access to the device is made through a standard I2C Interface at speeds of up to 1 Mb/s. The interface is compatible with standard Serial EEPROM I2C interface specifications. The device also supports a SingleWire Interface (SWI), which can reduce the number of GPIOs required on the system processor, and/or reduce the number of pins on connectors. If the Single-Wire Interface is enabled, the remaining pin is available for use as a GPIO, an authenticated output or tamper input. Using either the I2C or Single-Wire Interface, multiple ATECC508A devices can share the same bus, which saves processor GPIO usage in systems with multiple clients such as different color ink tanks or multiple spare parts, for example.