AT88SC0204CA-SH ATMEL [ATMEL Corporation], AT88SC0204CA-SH Datasheet - Page 3

• Manufacturer Part Number: AT88SC0204CA-SH
• Description: Atmel CryptoMemory
• Manufacturer: ATMEL [ATMEL Corporation]

1.
1.1
1.2
Description
The Atmel AT88SC0204CA member of the Atmel CryptoMemory
2Kbit 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. The AT88SC0204CA features an enhanced command set that allows direct communication
with microcontroller hardware two-wire interface thereby allowing for faster firmware development with reduced code space
requirements.
Smart Card Applications
The AT88SC0204CA provides high security, low cost, and ease of implementation without the need for a microprocessor
operating system. The embedded cryptographic engine provides for dynamic, 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 AT88SC0204CA offers the ability to communicate with
virtually any smart card reader using the asynchronous T = 0 protocol (Gemplus Patent) defined in ISO 7816-3.
Embedded Applications
Through dynamic, symmetric-mutual authentication, data encryption, and the use of cryptographic Message Authentication
Codes (MAC), the AT88SC0204CA 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 two-wire serial interface running at speeds up to
1.0MHz provides fast and efficient communications with up to 15 individually addressable devices. The AT88SC0204CA is
available in industry standard 8-lead packages with the same familiar pin configuration as AT24CXXX Serial EEPROM
devices.
Note:
Figure 1-1. Block Diagram
SCL/CLK
SDA/IO
GND
V
RST
CC
Does not apply to either the TSSOP or the Ultra Thin Mini-Map pinouts
Asynchronous
ISO Interface
Management
Synchronous
Reset Block
Interface
Power
Certification Unit
Answer to Reset
Authentication,
Encryption and
Data Transfer
Verification
Password
Atmel AT88SC0204CA [Summary DATASHEET]
®
family is a high-performance secure memory providing
Generator
EEPROM
Random
5202FS−CRYPTO−12/11
3