AT88SA102S-TSU-T Atmel, AT88SA102S-TSU-T Datasheet - Page 13

• Manufacturer Part Number: AT88SA102S-TSU-T
• Description: IC PRODUCT AUTHENTICATION SOT23-
• Manufacturer: Atmel
• Series: CryptoAuthentication™r
• Type: Authentication Chipr

Specifications of AT88SA102S-TSU-T

• Applications: Networking & Communications
• Mounting Type: Surface Mount
• Package / Case: SOT-23-3
• Operating Temperature (max): 85C
• Operating Temperature (min): -40C
• Mounting: Surface Mount
• Pin Count: 3
• Operating Temperature Classification: Industrial
• Operating Supply Voltage: 2.5 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Interface Type: 1 Wire
• Minimum Operating Temperature: - 40 C
• Number Of Timers: 1
• Program Memory Size: 72 bit
• Program Memory Type: ROM
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

16.
8663B–SMEM–3/09
Consumable Product Authentication
By embedding the AT88SA102S into the consumable (client) and sending a challenge from the system (host)
companies can guarantee that only authentic consumables are used in their systems. Figure 12 shows an example of
using the AT88SA102S to validate consumables.
Figure 12.
Secure personalization of each consumable must be implemented using the 62 bits of secret fuses. Using the secret
fuses to implement a key diversification scheme is recommended in order to limit the adverse effect if one of the keys is
compromised by failed control processes or corporate espionage. When using a diversified key the source of
compromise can be isolated and a remedy implemented much more rapidly. The incremental burn fuses provided by
the AT88SA102S can also be used to provide a consumable usage tracking or to limit device usage cycles.
An additional level of security can be added to the system by using the AT88SA10HS in the host. The AT88SA10HS
maintains the secret keys in hardware instead of embedding them into the host microprocessor code. This makes the
keys irretrievable for hackers attempting to circumvent the system.
Consumable Authentication
CryptoAuthentication™ Product Uses
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