2 Description

The Microchip AT88SCxxxxCA is a family of four high-performance secure memory devices, providing 1 Kbit to 8 Kbits of user memory with advanced built-in security and cryptographic features. The memory is divided into four or eight user zones, each of which may be individually set with different security access rights or used together to provide space for one or multiple data files. A Configuration zone contains registers to define the security rights for each user zone, as well as space for passwords and secret keys used by the security logic of Microchip CryptoMemory®.

Through dynamic, symmetric-mutual authentication, data encryption, and the use of encrypted checksums, CryptoMemory provides a secure place for storage of sensitive information within a system. With its tamper protection circuits, this information remains safe even under attack.

CryptoMemory also provides high security, low cost and ease of implementation of host-client type systems without the need for a microprocessor operating system. The embedded cryptographic engine enables dynamic, symmetric-mutual authentication between the device and host, and also performs stream encryption for all data and passwords exchanged between the device and host. Up to four unique key sets may be used for these operations.