4.1 User Memory

The EEPROM user memory is divided into 4, 8, or 16 user zones. Multiple zones allow for the storage of different data types or files in different zones. Access to user zones is possible only after meeting security requirements. The customer defines these security requirements in the Configuration zone during device personalization. When the same security requirements define access to multiple zones, the zones effectively serve as one large storage area, albeit with the requirement to select each zone prior to access. The following nine tables present the memory maps of the user zones for each device density.

Table 4-1. AT88SC0104C User MemoryMemory Size = 1 Kb, User Zones = 4, Page Size = 16 bytes
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
Table 4-2. AT88SC0204C User MemoryMemory Size = 2 Kb, User Zones = 4, Page Size = 16 bytes

Zone

$0

$1

$2

$3

$4

$5

$6

$7

User 0

$00

64 bytes

$38

User 1

$00

64 bytes

$38

User 2

$00

64 bytes

$38

User 3

$00

64 bytes

$38

Table 4-3. AT88SC0404C User MemoryMemory Size = 4 Kb, User Zones = 4, Page Size = 16 bytes

Zone

$0

$1

$2

$3

$4

$5

$6

$7

User 0

$00

128 bytes

$78

User 1

$00

128 bytes

$78

User 2

$00

128 bytes

$78

User 3

$00

128 bytes

$78

Table 4-4. AT88SC0808C User MemoryMemory Size = 8 Kb, User Zones = 8, Page Size = 16 bytes

Zone

$0

$1

$2

$3

$4

$5

$6

$7

User 0

$00

128 bytes

$78

User 1

User 6

$00

$78

User 7

$00

128 bytes

$78

Table 4-5. AT88SC1616C User MemoryMemory Size = 16 Kb, User Zones = 16, Page Size = 16 bytes

Zone

$0

$1

$2

$3

$4

$5

$6

$7

User 0

$00

128 bytes

$78

User 1

User 14

$00

$78

User 15

$00

128 bytes

$78

Table 4-6. AT88SC3216C User MemoryMemory Size = 32 Kb, User Zones = 16, Page Size = 64 bytes

Zone

$0

$1

$2

$3

$4

$5

$6

$7

User 0

$00

256 bytes

$F8

User 1

User 14

$00

$F8

User 15

$00

256 bytes

$F8

Table 4-7. AT88SC6416C User MemoryMemory Size = 64 Kb, User Zones = 16, Page Size = 64 bytes

Zone

$0

$1

$2

$3

$4

$5

$6

$7

User 0

$000

512 bytes

$1F8

User 1

User 14

$000

$1F8

User 15

$000

512 bytes

$1F8

Table 4-8. AT88SC12816C User MemoryMemory Size = 128 Kb, User Zones = 16, Page Size = 128 bytes

Zone

$0

$1

$2

$3

$4

$5

$6

$7

User 0

$000

1024 bytes

$3F8

User 1

User 14

$000

$3F8

User 15

$000

1024 bytes

$3F8

Table 4-9. AT88SC25616C User MemoryMemory Size = 256 Kb, User Zones = 16, Page Size = 128 bytes

Zone

$0

$1

$2

$3

$4

$5

$6

$7

User 0

$000

2048 bytes

$7F8

User 1

User 14

$000

$7F8

User 15

$000

2048 bytes

$7F8