AT88SC0808C 查看數據表（PDF） - Atmel Corporation

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AT88SC0808C

CryptoMemory 8 Kbit

Atmel Corporation 

AT88SC0808C

Device Architecture

User Zones

Figure 8. User Zone

ZONE

$00

-

User 0

-

$78

User 1

$00

-

-

-

-

-

User 6

$78

$00

-

User 7

-

$78

The EEPROM user memory is divided into 8 zones of 1024 bits each. Multiple zones

allow for different types of data or files to be stored in different zones. Access to the user

zones is allowed only after security requirements have been met. These security

requirements are defined by the user during the personalization of the device in the con-

figuration memory. If the same security requirements are selected for multiple zones,

then these zones may effectively be accessed as one larger zone.

$0

$1

$2

$3

$4

$5

$6

$7

128 Bytes

128 Bytes

Control Logic

Configuration

Memory

Access to the user zones occurs only through the control logic built into the device. This

logic is configurable through access registers, key registers and keys programmed into

the configuration memory during device personalization. Also implemented in the con-

trol logic is a cryptographic engine for performing the various higher-level security

functions of the device.

The configuration memory consists of 2048 bits of EEPROM memory used for storing

passwords, keys and codes and defining security levels to be used for each user zone.

Access rights to the configuration memory are defined in the control logic and may not

be altered by the user.

7

2024HS–SMEM–04/07

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