AT88SC101 データシートの表示（PDF） - Atmel Corporation
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AT88SC101 Datasheet PDF : 11 Pages
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The security features of Atmel’s AT88SC101/102 include:
data access only after validation of the security code
permanent invalidation of device upon four consecutive
false security code presentations
read/write protection of certain memory zones
device reset if power drops
secure transport of devices using transport code compare
sequence
The AT88SC101/102 is manufactured using low-power
CMOS technology and features its own internal high-volt-
age pump for single voltage supply operation. The de-
vices are guaranteed to 100,000 erase/write cycles and
100 year data retention. Endurance up to one-million
AT88SC101 and AT88SC102 Memory Map
Memory Partitions
Fabrication Zone (FZ)
Issuer Zone (IZ)
Security Code (SC)
Security Code Attempts Counter (SCAC)
Code Protected Zone (CPZ)
Application Zone 1 (AZ1)
Application Zone 1 Erase Key (EZ1)
Application Zone 2 (AZ2)
Application Zone 2 Erase Key (EZ2)
Erase Counter (EC)
Memory Test Zone (MTZ)
TOTAL BITS
AT88SC101
Address
Bits
0 - 15
16
16 - 79
64
80 - 95
16
96 - 111
16
112 - 175
64
176 - 1199 1024
1200 - 1231 32
—
—
—
—
1232 - 1359 128
1360 - 1375 16
1376
AT88SC102
Address Bits
0 - 15
16
16 - 79
64
80 - 95
16
96 - 111
16
112 - 175
64
176 - 687 512
688 - 735
48
736 - 1247 512
1248 - 1279 32
1280 - 1407 128
1408 - 1423 16
1424
Definition of AT88SC101/102 Memory Partitions
FABRICATION ZONE (16 bits): Programmed by the
manufacturer with a specific identifier for each customer.
FUSE1 is blown by the manufacturer after programming
the fabrication code, which makes the fabrication zone
unalterable.
ISSUER ZONE (64 bits): Programmed by the issuer be-
fore finalizing personalization. The data stored in the is-
suer zone is unalterable after FUSE2 is blown.
USER PROTECTED ZONE (64 bits): Writing and eras-
ing this zone is protected. The number of program/erase
cycles is guaranteed up to 100,000.
APPLICATION ZONE(S) (1024 or 512 bits): Reading
and programming the application zone(s) are controlled by
the first 2 bits of the zone (PR, RD) and by the security
code (Tables 1 and 2). The erasure of each zone is pro-
tected by an erase key specific to each zone.
SECURITY CODE (16 bits): Must be presented by the
issuer to access circuit memory and personalize device
before blowing FUSE2. This secures transportation be-
tween the manufacturer and the issuer. After the device is
personalized and FUSE2 is blown, this code protects the
access to the application zone(s) of the card.
SECURITY CODE ATTEMPTS COUNTER (16 bits):
Counts the number of incorrect security code attempts.
The device is locked after 4 false presentations.
APPLICATION ZONE ERASE KEY (32 or 48 bits): Must
be presented to authorize the erasure of the application
zone(s). The key(s) must be programmed during the per-
sonalization of the circuit.
ERASE COUNTER (128 bits): Limits the number of era-
sures of the last zone to 128 or less.
MEMORY TEST ZONE (16 bits): Allows pattern testing
at this memory location.
2
AT88SC101/102
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