2

AT88SC25616C

5017KS–SMEM–08/09

Table 1. Pin Assignments

Pad

Description

ISO Module

TWI Module

“SOIC PDIP”

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

RST=C2

SCL/CLK=C3

NC=C4

ISO Smart Card Module

C5=GND

C6=NC

C7=SDA/IO

C8=NC

NC

NC

NC

GND

1

2

3

4

8

7

6

5

8-lead SOIC, PDIP

NC

SCL

SDA

NC=C2

SCL/CLK=C3

NC=C4

TWI Smart Card Module

C5=GND

C6=NC

C7=SDA/IO

C8=NC

1.

Description

The AT88SC25616C member of the CryptoMemory

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..