AT88SC0104CA_11 ATMEL [ATMEL Corporation], AT88SC0104CA_11 Datasheet - Page 5

• Manufacturer Part Number: AT88SC0104CA_11
• Description: Atmel CryptoMemory Specification Datasheet
• Manufacturer: ATMEL [ATMEL Corporation]

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Description
The Atmel
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 and space for passwords and
secret keys used by the security logic of Atmel 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 provides for a dynamic, symmetric-mutual
authentication between the device and host, as well as 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.
Atmel AT88SCxxxxC Family of Products Differences
The key differentiating feature of the AT88SCxxxxCA family of memory devices from AT88SCxxxxC family is support for
hardware implementation of the TWI read command. Support for this TWI hardware command allows for faster application
development and also permits greater device versatility. In addition, AT88SCxxxxCA offers a random read command, whereby
given a starting address, the user can clock unlimited number of bytes from the device up to the memory capacity. Last but not
least, the AT88SCxxxxCA family of devices specifically targets low voltage and low power applications.
Embedded Applications
A two-wire serial interface running at 1.0MHz is used for fast and efficient communications with up to 15 devices that may be
individually addressed. CryptoMemory is available in industry standard 8-lead packages with the same familiar pin layout as
two-wire Serial EEPROMs supporting only the synchronous communications protocol.
Note:
Smart Card Applications
CryptoMemory offers the ability to communicate with virtually any smart card reader using the asynchronous T=0 protocol
defined in ISO 7816-3. All CryptoMemory devices in smart card module form will also communicate using a synchronous
two-wire serial interface.
Scope
This CryptoMemory specification document includes all specifications for the standard, authentication, and encryption modes
of CryptoMemory operation.
®
AT88SCxxxxCA is a family of four high-performance secure memory devices providing 1K to 8K bits of user
TSSOP pinout not the same
Atmel AT88SC0104CA/0204CA/0404CA/0808CA [Datasheet]
®
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8664E−CRYPTO−12/11
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