AT88SC25616C-PU Microchip

Features One of a Family of 9 Devices with User Memories from 1-Kbit to 256-Kbit 256-Kbit (32-Kbyte) EEPROM User Memory Sixteen 2-Kbyte (16-Kbit) Zones Self-timed Write Cycle Single Byte or 128-byte Page Write Mode Programmable Access Rights for Each Zone 2-Kbit Configuration Zone CryptoMemory 37-byte OTP Area for User-defined Codes 256 Kbit 160-byte Area for User-defined Keys and Passwords High Security Features 64-bit Mutual Authentication Protocol (Under License of ELVA) AT88SC25616C Encrypted Checksum Stream Encryption Four Key Sets for Authentication and Encryption Summary 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) * Supports Protocol and Parameters Selection for Faster Operation 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 1.0 MHz 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 * Note: Modules available with either T=0 / 2-wire modes or 2-wire mode only. 5017KSSMEM08/09 Table 1. Pin Assignments Pad Description ISO Module TWI Module SOIC PDIP V Supply Voltage C1 C1 8 CC 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 1 8 V CC 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 AT88SC25616C member of the CryptoMemory family is a high-performance secure memory providing 256 Kbits of user memory with advanced security and cryptographic features built in. The user memory is divided into 16 2-Kbyte zones, each of which may be individually set with different security access rights or effectively combined together to provide space for 1 to 16 data files. 1.1. Smart Card Applications The AT88SC25616C 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 AT88SC25616C offers the ability to communicate with virtually any smart card reader using the asynchronous T = 0 protocol (Gemplus Patent) defined in ISO 7816-3. Communication speeds up to 153,600 baud are supported by utilizing ISO 7816-3 Protocol and Parameter Selection. 1.2. Embedded Applications Through dynamic and symmetric mutual authentication, data encryption, and the use of encrypted checksums, the AT88SC25616C 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 1.0 MHz is used for fast and efficient communications with up to 15 devices that may be individually addressed. The AT88SC25616C is available in industry standard 8-lead packages with the same familiar pinout as 2-wire serial EEPROMs.. 2 AT88SC25616C 5017KSSMEM08/09