AT88SC0104C [SUMMARY DATASHEET]
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Figure 4-3. Data Validity
Figure 4-4. Start and Stop Definitions
Figure 4-5. Output Acknowledge
DATA
CHANGE
ALLOWED
DATA STABLEDATA STABLE
SDA
SCL
SDA
SCL
START STOP
SCL
DATA IN
DATA OUT
EGDELWONKCATRATS
9
8
1
AT88SC0104C [SUMMARY DATASHEET]
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5. Device Architecture
5.1 User Zones
The EEPROM user memory is divided into four zones of 256 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 5-1. User Zones
Zone
$0
$1
$2
$3
$4
$5
$6
$7
User 0
$00
32 bytes
$18
User 1
$00
32 bytes
$18
User 2
$00
32 bytes
$18
User 3
$00
32 bytes
$18
6. 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.
AT88SC0104C [SUMMARY DATASHEET]
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7. Configuration Memory
The configuration memory consists of 2048 bits of EEPROM memory used for storing passwords, keys and codes and for
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.
Figure 7-1. Configuration Memory
$0 $1 $2 $3 $4 $5 $6 $7
$00 Answer to Reset
Identification
$08 Fab Code MTZ Card Manufacturer Code
$10 Lot History Code Read Only
$18 DCR Identification Number Nc
Access Control
$20 AR0 PR0 AR1 PR1 AR2 PR2 AR3 PR3
$28
Reserved $30
$38
$40
Issuer Code
$48
$50
For Authentication and Encryption Use Cryptography
$58
$60
$68
$70
$78
$80
$88
$90
For Authentication and Encryption Use Secret
$98
$A0
$A8
$B0 PAC Write 0 PAC Read 0
Password
$B8 PAC Write 1 PAC Read 1
$C0 PAC Write 2 PAC Read 2
$C8 PAC Write 3 PAC Read 3
$D0 PAC Write 4 PAC Read 4
$D8 PAC Write 5 PAC Read 5
$E0 PAC Write 6 PAC Read 6
$E8 PAC Write 7 PAC Read 7
$F0
Reserved Forbidden
$F8

AT88SC0104C-MJ

Mfr. #:
Manufacturer:
Microchip Technology / Atmel
Description:
EEPROM CRYPTO Memory 1Kbit, 4zones
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
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