ATAES132A-SHER-T Model Information

Overview

The ATAES132A-SHER-T is a high-security Serial EEPROM device designed for applications requiring secure data storage and authentication. It integrates advanced cryptographic features with standard EEPROM functionality, providing a robust solution for protecting sensitive information.

Features

• Crypto Element Device: Secure hardware-based key storage.
• 32Kb Standard Serial EEPROM Memory: Compatible with Atmel® AT24C32D and AT25320B.
• 16 User Zones: Each zone is 2Kb in size.
• High-security Features:AES algorithm with 128-bit keys.AES-CCM for authentication.Message Authentication Code (MAC) capability.Guaranteed unique die serial number.Secure storage for up to sixteen 128-bit keys.Encrypted user memory read and write.Internal high-quality FIPS Random Number Generator (RNG).16 high-endurance monotonic EEPROM counters.
• Flexible User Configured Security: User zone access rights can be independently configured.
• High-speed Serial Interface Options:10MHz SPI (Mode 0 and 3).1MHz Standard I2C Interface.
• Supply Voltage Range: 2.5V to 5.5V.
• Low Sleep Current: <250nA.
• Package Options: 8-pad UDFN and 8-lead SOIC.
• Temperature Range: -40°C to +85°C.

Benefits

• Easily add security by replacing existing Serial EEPROM.
• Authenticate consumables, components, and network access.
• Protect sensitive firmware.
• Securely store sensitive data and enable paid-for features.
• Prevent contract manufacturers from overbuilding.
• Manage warranty claims.
• Securely store identity data (e.g., fingerprints and pictures).
• Secure download and boot authentication.
• Ensure only OEM/licensed nodes and accessories work.
• Prevent cloning with identical BOM or stolen code.
• Ensure message security with authentication, integrity, and confidentiality.

Pin Configuration

The ATAES132A-SHER-T features the following pin configuration:

• CSB: SPI Chip Select Bar Input.
• SO: Serial Data Out.
• NC: No Connect.
• VSS: Ground.
• SI/SDA: Serial Data In.
• SCK: Serial Clock Input.
• NC: No Connect.
• VCC: Supply Voltage.

Security Features

• AES-128 Cryptographic Engine: Operates in AES-CCM mode for authentication, data encryption/decryption, and MAC generation.
• Hardware Security Mechanisms: Physical security features to prevent the release of internal secrets.
• Authentication: Supports one-way and mutual authentication using internally stored keys.
• Key Authentication: Individual keys can be configured to require successful authentication prior to use.

Electrical Characteristics

• Operating Temperature: -40°C to +85°C.
• Storage Temperature: -65°C to +150°C.
• Maximum Operating Voltage: 6.0V.
• DC Output Current: 5.0mA.
• ESD Protection: HBM ESD 3kV minimum.

Reliability

• Write Endurance: 100,000 write cycles per byte.
• Data Retention: 10 years at 55°C, 30-50 years at 35°C.
• Read Endurance: Unlimited read cycles.

DC Characteristics

• Supply Voltage (VCC): 2.50V to 5.50V.
• Supply Current (ICC1): 6mA at VCC = 3.3V, fmax.
• Supply Current (ICC2): 10mA at VCC = 5.5V, fmax.
• Idle Current (ICC3): 600-800µA at VCC = 3.3V or 5.5V, fmax.
• Sleep Current (ISL1): 0.10-0.25µA at VCC = 3.3V.
• Sleep Current (ISL2): 0.25-0.50µA at VCC = 5.5V.
• Standby Current (ISB1): 15-30µA at VCC = 3.3V.
• Standby Current (ISB2): 20-40µA at VCC = 5.5V.

I/O Characteristics

• Input Current (ILI): -3.0µA to 3.0µA.
• Output Leakage (ILO): -3.0µA to 3.0µA.
• Input Low-Voltage (VIL): -0.5V to 0.3VCC.
• Input High-Voltage (VIH): 0.7VCC to VCC + 0.5V.
• Output Low-Voltage (VOL1): 0V to 0.4V at IOL = 3.0mA.
• Output High-Voltage (VOH1): VCC - 0.8V to VCC at IOH = -3.0mA.
• Output Low-Voltage (VOL2): 0V to 0.4V at IOL = 3.0mA (I2C mode).

AC Characteristics

• User Zone Write Cycle Time (tWC1): 6.0ms to 9.0ms.
• Key Zone Write Cycle Time (tWC2): 12.0ms to 16.0ms.
• Command Response Time: Based on characterization.

Power-Up, Sleep, Standby, and Wake-Up Timing

• Power-Up Time (tPU.STATUS): 500µs to 600µs.
• Power-Up Ready Time (tPU.RDY): 1200µs to 1500µs.
• Sleep Time (tSL): 55µs to 90µs.
• Standby Time (tSB): 65µs to 100µs.
• Wake-Up Status Time (tWupSL.STATUS, tWupSB.STATUS): 50µs to 100µs.
• Wake-Up Ready Time (tWupSL.RDY, tWupSB.RDY): 200µs to 1500µs.

I2C Interface Timing

• SCK Clock Frequency (fSCK): 1MHz.
• SCK Clock Duty Cycle: 30% to 70%.
• SCK High Time (tHIGH): 400ns.
• SCK Low Time (tLOW): 400ns.
• Start Setup Time (tSU.STA): 250ns.
• Start Hold Time (tHD.STA): 250ns.
• Stop Setup Time (tSU.STO): 250ns.
• Data Setup Time (tSU.DAT): 100ns.
• Data Hold Time (tHD.DAT): 0ns.
• Input Rise Time (tR): 300ns.
• Input Fall Time (tF): 100ns.
• Clock Low to Data Out Valid (tAA): 50ns to 550ns.
• Data Out Hold Time (tDH): 50ns.
• Bus Free Time (tBUF): 500ns.

SPI Interface Timing

• SCK Clock Frequency (fSCK): 0 to 10MHz.
• SCK Clock Duty Cycle: 30% to 70%.
• SCK High Time (tWH): 40ns.
• SCK Low Time (tWL): 40ns.
• CS High Time (tCS): 50ns.
• CS Setup Time (tCSS): 50ns.
• CS Hold Time (tCSH): 50ns.
• Data In Setup Time (tSU): 10ns.
• Data In Hold Time (tH): 10ns.
• Input Rise Time (tRI): 2µs.
• Input Fall Time (tFI): 2µs.
• Output Valid (tV): 0 to 40ns.
• Output Hold Time (tHO): 0ns.
• Output Disable Time (tDIS): 50ns.

Ordering Information

• Interface: I2C.
• Configuration: Standard.
• Conditioning: Tape and Reel.
• Package: 8-lead SOIC.
• Lead Finish: NiPdAu.
• Temperature Range: Industrial (-40°C to 85°C).