AT88SC0404CRF-MR1 Atmel, AT88SC0404CRF-MR1 Datasheet - Page 4

• Manufacturer Part Number: AT88SC0404CRF-MR1
• Manufacturer: Atmel

Specifications of AT88SC0404CRF-MR1

• Operating Temperature (max): 70C
• Operating Temperature (min): 0C
• Operating Temperature Classification: Commercial
• Lead Free Status / RoHS Status: Compliant

5. User Memory
6. Configuration Memory
6.1
4
Security Fuses
AT88SC0404CRF
The EEPROM user memory is divided into four user zones as shown in the memory map in
Table
Access to the user zones is allowed only after security requirements have been met. These
security requirements are defined by the user in the configuration memory during personaliza-
tion of the device. The EEPROM memory page length is 16 bytes.
Table 5-1.
The configuration memory consists of 2048 bits of EEPROM memory used for storing system
data, passwords, keys, codes, and security-level definitions for each user zone. Access rights to
the configuration zone are defined in the control logic and may not be altered by the user. These
access rights include the ability to program certain portions of the configuration memory and
then lock the data written through use of the security fuses.
There are three fuses on the device that must be blown during the device personalization pro-
cess. Each fuse locks certain portions of the configuration memory as OTP memory. Fuses are
designated for the module manufacturer, card manufacturer and card issuer and must be blown
in sequence.
User 0
User 1
User 2
User 3
Zone
5-1. Multiple zones allow for different types of data or files to be stored in different zones.
Memory Map
$00
$78
$00
$78
$00
$78
$00
$78
–
–
–
–
–
–
–
–
$0
$1
$2
$3
128 Bytes
128 Bytes
128 Bytes
128 Bytes
$4
$5
$6
5023DS–CRRF–04/09
$7