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Microchip Technology AT88SA102S-SH-T
- Part No.:
- AT88SA102S-SH-T
- Manufacturer:
- Microchip Technology
- Category:
- Specialized ICs
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Description:
- IC AUTHENTICATION CHIP 8SOIC
- Quantity:
Unit Price:$0
Ext Price:$0
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- Shipping:
Product Details
AT88SA102S-SH-T - SHA-256 Product Authentication IC
Microchip AT88SA102S-SH-T is an 8-SOIC CryptoAuthentication device with a single-wire interface, SHA-256 challenge-response operation and a factory-programmed unique serial number.
Technical and ordering details follow the manufacturer-hosted Atmel AT88SA102S datasheet, revision 8584H. This legacy device is not recommended for new designs; verify current lifecycle before selection.
Overview
The AT88SA102S supports product authentication by receiving a host challenge and generating a keyed SHA-256 response. It can also participate in session-key exchange for a system that has an appropriate secure host implementation. A factory-programmed unique 48-bit serial number and one-time-programmable fuses support device identification and personalization.
Key Advantages
Challenge-response security
A keyed SHA-256 response lets a host check whether the device holds the expected secret.
Unique device identity
The factory-programmed 48-bit serial number supports per-device identification.
Simple signal connection
The serial protocol uses a single SIGNAL line plus supply and ground.
Personalization support
One-time-programmable fuses can hold protected secret and readable status information.
Feature Summary
Cryptographic function
SHA-256-based message authentication with a 256-bit key space.
Memory resources
128 one-time-programmable fuse bits, with manufacturer-programmed identification fields.
Low-power mode
The device enters a sleep state between transactions; observe the datasheet's wake timing.
Bus management
PauseLong can avoid contention when compatible authentication devices share the signal line.
Package & Footprint
Registered package: 8-SOIC (0.154 in, 3.90 mm nominal width). The manufacturer specifies the 8S1, eight-lead, 0.150-inch-wide-body JEDEC SOIC outline for this orderable code. The datasheet gives a 3.81 to 3.99 mm body width, 4.80 to 5.05 mm body length and 1.27 mm lead pitch.
- Use the manufacturer 8S1 package drawing for the final land pattern.
- Confirm pin-one orientation and the five no-connect leads.
- Place a 0.1 µF VCC bypass capacitor close to the device.
The package JPG is pending online availability. Use the dimensioned manufacturer 8S1 drawing for final PCB design.
Pin Functions
The manufacturer SOIC pin table identifies three active connections and five no-connect leads.
Check the 8S1 top-view drawing when placing and inspecting the component.
Key Specifications
| Exact orderable code | AT88SA102S-SH-T |
|---|---|
| Function | CryptoAuthentication product-authentication device |
| Algorithm | SHA-256 keyed challenge response |
| Device serial number | Factory-programmed, unique 48-bit identifier |
| Host interface | Single-wire serial SIGNAL line |
| Supply voltage | 2.7 to 5.25 V |
| Operating temperature | -40 to +85 °C |
| Sleep current | 150 nA maximum from -40 to +55 °C under the datasheet's stated 5.25 V conditions; 1 µA maximum at +85 °C |
| Active current | 6 mA maximum |
| Fuse array | 128 one-time-programmable bits |
| Package | 8S1 SOIC, tape and reel |
| Body and pitch | 3.81 to 3.99 mm body width; 1.27 mm lead pitch |
Electrical limits depend on the conditions in the manufacturer datasheet; the sleep-current figures are not unconditional typical values.
Replacement Considerations
The manufacturer identifies ATSHA204 as a successor family for new designs, but no drop-in interchangeability is asserted here. Review package, pinout, command set, challenge-response provisioning, fuse personalization, host firmware, supply requirements and lifecycle before a substitution. Do not reuse authentication keys or provisioning assumptions without a security review.
Manufacturer Information
The catalog record identifies Microchip Technology. The manufacturer-hosted Atmel AT88SA102S datasheet, revision 8584H (September 2012), lists the exact AT88SA102S-SH-T ordering code as SOIC tape and reel, with a 2.7 to 5.25 V industrial operating option. The datasheet also provides the 8S1 package outline and marks the device not recommended for new designs.
Applications
Replaceable-item authentication
Challenge-response checks for consumables, modules or accessories.
Board identity
Per-unit serial identity and keyed verification for daughter cards and evaluation hardware.
Access control
Authentication of a physical or network endpoint when the host system implements the required protocol.
Secure personalization
Factory provisioning workflows using one-time fuses and an appropriately protected host secret.
Quality & Authenticity
Verify the complete -SH-T ordering code, SOIC body, reel label, date and lot traceability against procurement documents. Test authentication only with the intended provisioning state and authorized challenge-response procedure. This description does not certify a particular lot, installed key or present-day availability.
FAQ
Which package is specified for -SH-T?
The manufacturer ordering table specifies an eight-lead SOIC supplied in tape and reel.
Does SIGNAL need a pull-up?
Yes. The manufacturer describes an open-drain output and expects an external pull-up to VCC.
Is it recommended for a new design?
No. The manufacturer datasheet marks this device not recommended for new designs; evaluate the suggested successor family and verify compatibility independently.
Engineering Notice
Use the latest manufacturer-controlled documentation for final schematic, PCB and security decisions. Check 8S1 dimensions, pull-up and bypass networks, wake and watchdog timing, fuse-programming irreversibility, key-provisioning controls and lifecycle before release.
AT88SA102S-SH-T Information
- Specifications
- Tags
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- CryptoAuthentication™
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Authentication Chip
- Applications:
- Networking and Communications
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
- Grade:
- -
- Qualification:
- -
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