AT88SC25616C-PU Atmel, AT88SC25616C-PU Datasheet - Page 8

• Manufacturer Part Number: AT88SC25616C-PU
• Description: IC EEPROM 256BIT 1.5MHZ 8DIP
• Manufacturer: Atmel
• Series: CryptoMemory®r

Specifications of AT88SC25616C-PU

• Format - Memory: EEPROMs - Serial
• Memory Type: EEPROM
• Memory Size: 256K (32K x 8)
• Speed: 5MHz
• Interface: I²C, 2-Wire Serial
• Voltage - Supply: 2.7 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 8-DIP (0.300", 7.62mm)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

5.
5.1.
6.
8
Device Architecture
User Zones
The EEPROM user memory is divided into 16 zones of 16,384 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 configuration
memory. If the same security requirements are selected for multiple zones, then these zones may effectively be
accessed as one larger zone.
Figure 8.
Control Logic
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 control logic is a cryptographic engine for performing the various higher-level security
functions of the device.
AT88SC25616C
User 14
User 15
User 0
User 1
Zone
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─
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User Zones
$000
$7F8
$000
$7F8
$000
$7F8
─
─
─
─
─
─
$0
$1
$2
$3
2048 Bytes
2048 Bytes
$4
$5
5017KS–SMEM–08/09
$6
$7