AT88SC0204C Atmel CryptoMemory, 2-Kbit SUMMARY DATASHEET Features One of a family of nine devices with user memories from 1-Kbit to 256-Kbit 2-Kbit (256 bytes) EEPROM user memory Four 64-byte (512-bit) zones Self-timed write cycle Single byte or 16-byte page write mode Programmable access rights for each zone 2-Kbit configuration zone 37-byte OTP area for user-defined codes 160-byte area for user-defined keys and passwords High security features 64-bit Mutual Authentication Protocol (under license of ELVA) Encrypted checksum Stream encryption Four key sets for authentication and encryption Eight sets of two 24-bit passwords Anti-tearing function Voltage and frequency monitor Smart card features ISO 7816 Class A (5V) or Class B (3V) operation ISO 7816-3 asynchronous T = 0 protocol (Gemplus patent) * Multiple zones, key sets and passwords for multi-application use Synchronous 2-wire serial interface for faster device initialization * Programmable 8-byte answer-to-reset register ISO 7816-2 compliant modules Embedded application features Low voltage operation: 2.7V to 5.5V Secure nonvolatile storage for sensitive system or user information 2-wire serial interface 1.0MHz compatibility for fast operation Standard 8-lead plastic packages, green compliant (exceeds RoHS) Same pinout as 2-wire Serial EEPROMs High reliability Endurance: 100,000 cycles Data retention: 10 years ESD protection: 4,000V min This is a summary document. The complete document is * Note: Modules available with either T=0 / 2-wire modes or 2-wire mode only available on the Atmel website at www.atmel.com. Atmel-2022MS-CryptoMem-AT88SC0204C-Datasheet-Summary 122013 Table 1. Pin Assignment Pad Description ISO Module TWI Module Standard Package Pin VCC Supply Voltage C1 C1 8 GND Ground C5 C5 4 SCL/CLK Serial Clock Input C3 C3 6 SDA/IO Serial Data Input/Output C7 C7 5 RST Reset Input C2 NC NC Figure 1. Pin Configuration ISO Smart Card Module 8-lead SOIC, PDIP V =C1 C5=GND NC V CC 1 8 CC RST=C2 C6=NC NC 2 7 NC SCL/CLK=C3 C7=SDA/IO NC 3 6 SCL NC=C4 C8=NC GND 4 5 SDA TWI Smart Card Module V =C1 C5=GND CC NC=C2 C6=NC SCL/CLK=C3 C7=SDA/IO NC=C4 C8=NC 1. Description The Atmel AT88SC0204C member of the Atmel CryptoMemory family is a high-performance secure memory providing 2-Kbits of user memory with advanced security and cryptographic features built in. The user memory is divided into four 64-byte zones, each of which may be individually set with different security access rights or effectively combined together to provide space for one to four data files. 1.1 Smart Card Applications The AT88SC0204C provides high security, low cost, and ease of implementation without the need for a microprocessor operating system. The embedded cryptographic engine provides for dynamic and symmetric mutual authentication between the device and host, as well as performing 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. The AT88SC0204C offers the ability to communicate with virtually any smart card reader using the asynchronous T = 0 protocol (Gemplus patent) defined in ISO 7816-3. 1.2 Embedded Applications Through dynamic and symmetric mutual authentication, data encryption, and the use of encrypted checksums, the AT88SC0204C provides a secure place for storage of sensitive information within a system. With its tamper detection circuits, this information remains safe even under attack. A 2-wire serial interface running at 1.0MHz is used for fast and efficient communications with up to 15 devices that may be individually addressed. The AT88SC0204C is available in industry standard 8-lead packages with the same familiar pinout as 2-wire Serial EEPROMs. 2 AT88SC0204C SUMMARY DATASHEET Atmel-2022MS-CryptoMem-AT88SC0204C-Datasheet-Summary 122013