Datasheet > AT88SC0104C_07

AT88SC0104C_07

更新时间： 2022-04-23 23:00:11

品牌	Logo	应用领域
爱特美尔 - ATMEL		/
页数	文件大小	规格书
18页	425K
描述
CryptoMemory 1 Kbit

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AT88SC0104C_07 数据手册

Description

The AT88SC0104C member of the CryptoMemory^®family is a high-performance secure

memory providing 1 Kbit of user memory with advanced security and cryptographic fea-

tures built in. The user memory is divided into four 32-byte zones, each of which may be

individually set with different security access rights or effectively combined together to

provide space for 1 to 4 data files.

Smart Card Applications The AT88SC0104C provides high security, low cost, and ease of implementation with-

out 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 AT88SC0104C 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 and symmetric mutual authentication, data encryption, and the use of

encrypted checksums, the AT88SC0104C provides a secure place for storage of sensi-

tive 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 AT88SC0104C is available in industry standard 8-lead packages with

the same familiar pinout as 2-wire serial EEPROMs.

Figure 2. Block Diagram

Authentication,

Encryption and

Certification Unit

VCC

GND

Random

Generator

Power

Management

Synchronous

Interface

Data Transfer

SCL/CLK

SDA/IO

Password

Verification

Asynchronous

ISO Interface

EEPROM

RST

Reset Block

Answer to Reset

Pin Descriptions

Supply Voltage (V_CC

Clock (SCL/CLK)

)

The V_CCinput is a 2.7V to 5.5V positive voltage supplied by the host.

In the asynchronous T = 0 protocol, the SCL/CLK input is used to provide the device

with a carrier frequency f. The nominal length of one bit emitted on I/O is defined as an

“elementary time unit” (ETU) and is equal to 372/f. When the synchronous protocol is

used, the SCL/CLK input is used to positive edge clock data into the device and nega-

tive edge clock data out of the device.

AT88SC0104C

2021HS–SMEM–04/07

123 4 5 6 7...18

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