ATAES132 32K AES Serial EEPROM Specification I2C SUMMARY DATASHEET Features 32Kb standard Serial EEPROM User Memory Compatible with the Atmel® AT24C32D 16 user zones of 2Kb each High-security features AES algorithm with 128-bit keys AES-CCM for authentication Message Authentication Code (MAC) for cryptographic operations Secure storage for sixteen 128-bit keys Encrypted User Memory Read and Write FIPS Random Number Generator 16 high-endurance monotonic EEPROM counters Flexible, user-configurable security User zone access rights independently configured Authentication prior to zone access Read/Write, encrypted, or read-only user zone options 1MHz I2C serial interface 2.5V to 5.5V supply, <250nA sleep Packages: SOIC or UDFN Serial EEPROM compatible pinout -40C to +85C operating temperature Benefits Add security without retooling printed circuit board by just replacing an existing Serial EEPROM. Authenticate consumables Authenticate components Authenticate network access Protect sensitive firmware Secure confidential data Prevent enablement of unpaid for features Manage contract manufacturers from overbuilds Manage warranty claims This is a summary document. The complete document is available on the Atmel website at www.atmel.com. Securely store complete identify including fingerprints and pictures Atmel-8762DS-CryptoAuth-ATAES132-I2C-Datasheet-Summary_072014 Description The Atmel ATAES132 is a high-security Serial Electrically Erasable and Programmable Read-Only Memory (EEPROM) providing authentication, confidential, nonvolatile data storage capabilities. Access restrictions for the sixteen user zones are independently configured, and any key can be used with any zone. Keys can also be used for standalone authentication. This flexibility permits the ATAES132 to be used in a wide range of applications. The AES-128 cryptographic engine operates in AES-CCM mode to provide authentication, stored data encryption/decryption, and message authentication codes. Both internally stored data and/or small quantities of external data can be protected by the ATAES132 device. The ATAES132 pinout is compatible with standard Serial EEPROMs to allow placement on existing PC boards. The Serial EEPROM portion of the ATAES132 instruction set is identical to the Atmel Serial EEPROM instruction set. The ATAES132’s extended security functions are accessed by sending command packets to the ATAES132 using standard Write instructions and reading responses using standard Read instructions. The ATAES132 Secure Serial EEPROM architecture allows it to be inserted into existing applications. The ATAES132 device incorporates multiple physical security mechanisms to prevent release of the internally stored secrets. Secure personalization features are provided to facilitate third-party product manufacturing. Table 1. Package Pin List Pad Description SOIC UDFN VCC Supply Voltage 8 8 GND Ground 4 4 SCL Serial Clock Input 6 6 SDA Serial Data Input/Output 5 5 NC No Connect Pin. Recommend Float or Tie to VCC. 1 1 AuthO Auth Signalling 2 2 NC No Connect Pin. Recommend Float or Tie to VCC. 3 3 Figure 1. Pin Configurations SOIC UDFN NC 1 8 VCC VCC 8 1 NC AuthO 2 7 NC NC 7 2 AuthO NC 3 6 SCL SCL 6 3 NC GND 4 5 SDA SDA 5 4 GND Top View Note: 2 Bottom View Drawings are not to scale. ATAES132 [I2C Summary Datasheet] Atmel-8762DS-CryptoAuth-ATAES132-I2C-Datasheet-Summary_072014 1. Security 1.1 Advanced Encryption Standard (AES) The ATAES132 cryptographic functions are implemented with a hardware cryptographic engine using the Advanced Encryption Standard (AES) in the CCM (Counter mode Cipher block chaining Message authentication code) mode with 128-bit keys. AES-CCM mode provides both confidentiality and integrity checking with a single key. The integrity MAC includes both the encrypted data and additional authenticate-only data bytes, as described in each command definition. Each MAC is unique due to inclusion of a nonce and an incrementing MacCount register in the MAC calculation. 1.2 Hardware Security Features The ATAES132 device contains physical security features to prevent an attacker from determining the internal secrets. The ATAES132 includes tamper detectors for voltage, temperature, frequency, and light, as well as an active metal shield over the circuitry, internal memory encryption, and various other features. The ATAES132 physical design and cryptographic protocol are architected to prevent or significantly complicate most algorithmic, timing, and side-channel attacks. 2. Device Internal Regions Seven distinct regions make up the internal organization of the ATAES132: User Memory, Information Region, Configuration Memory, Counters, Key Memory, SmallZone, and the I/O Support regions. Figure 2-1. Device Internal Regions User Memory (32Kb) Information Region (36 bytes) Configuration Memory (165 bytes) Counters (2Kb) Key Memory (2Kb) Small Zone (32 bytes) Free Space (96 bytes) I/O Support SRAM 2.1 User Memory The User Memory is comprised of 32Kb of nonvolatile memory, segmented into 16 zones. Access to the zones is independently configurable to offer access restrictions, from open access, as in any standard Serial EEPROM, to full restrictions that preclude Read/Write operations and will only permit internal, authenticated use for such data as security keys. 2.2 Information Region The Information Region holds read-only identification information, such as unique die serial numbers and other information pertaining to the ATAES132. ATAES132 [I2C Summary Datasheet] Atmel-8762DS-CryptoAuth-ATAES132-I2C-Datasheet-Summary_072014 3 2.3 Configuration Memory The Configuration Memory offers the ability to customize access rights to different resources of the device as a means to tailor the various security features of the device to one’s specific application. This customizing, formally known as personalization, grants the application owner the ability to define custom access rights to device resources, from counters and key usage to memory. After personalization, the application owner issues lock commands to render the configuration permanent and to forever seal security keys and information in user zones configured to be confidential. The Configuration Memory supports multi-step workflows to support the use of third-party services like programming without compromising the content or application security. In addition, Atmel offers optional, value-add programming services through the use of hardware security modules, which allow application owners to virtually inject their secrets into the ATAES132. Table 2-1. Name Description Write Read Bytes Algorithm Algorithm ID Code (0x0000). Never Always 2 ChipConfig Device level cryptographic and power-up configuration options. If Lockconfig = Unlocked Always 1 Counters 16 monotonic counters, each capable of counting to 2M. If Lockconfig = Unlocked Always 128 CounterConfig Configuration information for each counter. If Lockconfig = Unlocked Always 32 DeviceNum Atmel device number code. Never Always 1 EEPageSize Length in bytes of physical EEPROM page (32, 0x20). Never Always 1 EncReadSize Maximum data length in bytes for EncRead (32, 0x20). Never Always 1 EncWriteSize Maximum data length in bytes for EncWrite (32, 0x20). Never Always 1 FreeSpace Free memory for customer data storage. If Lockconfig = Unlocked Always 96 JEDEC Atmel JEDEC manufacturer code 0x001F. Never Always 2 KeyConfig Configuration information for each key. If Lockconfig = Unlocked Always 64 LockConfig(1) Controls Configuration Memory Write access except SmallZone. Default is the Unlocked state. Via Lock Command Only Always 1 LockKeys(1) Controls Key Memory Write access. Default is the ‘unlocked’ state. Via Lock Command Only Always 1 LockSmall(1) Controls SmallZone Register Write access. Default is the ‘unlocked’ state. Via Lock Command Only Always 1 LotHistory Atmel proprietary manufacturing information Never Always 8 Note: 4 Summary of Configuration Table Parameters, Sorted by Name 1. Changes to most of the configuration registers take effect immediately which allows the functionality to be tested during the personalization process. Changes to the I2C Addr register take effect at the next Reset, Power-Up, or Wake-Up from the Sleep state. ATAES132 [I2C Summary Datasheet] Atmel-8762DS-CryptoAuth-ATAES132-I2C-Datasheet-Summary_072014 Table 2-1. Name Description Write Read Bytes ManufacturingID Two byte manufacturing ID code Never Always 2 PermConfig Atmel factory device configuration options Never Always 1 SerialNum Guaranteed unique die serial number. SerialNum is optionally included in cryptographic calculations Never Always 8 SmallZone 32 byte value. The first four bytes are optionally included in cryptographic calculations If Locksmall = Unlocked Always 32 I2C Addr Selects the serial interface mode and stores the I2C device address. If LockConfig = Unlocked Always 1 ZoneConfig Access and usage permissions for each user zone. If LockConfig = Unlocked Always 64 Note: 2.4 Summary of Configuration Table Parameters, Sorted by Name (Continued) 1. Changes to most of the configuration registers take effect immediately which allows the functionality to be tested during the personalization process. Changes to the I2C Addr register take effect at the next Reset, Power-Up, or Wake-Up from the Sleep state. Counters The Counters region contains 16 nonreversible monotonic counters. The Counter operation is customized during personalization in the Configuration Memory to permit such features as free use, authenticated-only increments, and control of key usage. 2.5 Key Memory Key Memory holds sixteen 128-bit keys targeting various AES and AES-CCM operations. Key usage is customized during personalization in the Configuration Memory to permit custom features like authentication-only, limited-use, counter increment, user zone access, key permissions, and many other uses. The Key Memory is writeable only during personalization and is never readable under any circumstances. One may only use an authentication procedure to validate the content of a key; however, the ATAES132 offers a set of commands which, when so configured during personalization, permits secure key creation, imports, and transfer of content from a confidential User Memory to key space. 2.6 SmallZone SmallZone is a 32-byte, general-purpose memory separate from the 32Kb user memory and with special features to aid multi-step workflows. Configuration at personalization may make portions of this zone a mandatory input into cryptographic calculations. 2.7 I/O Support The I/O Support regions contains a FIFO and other registers, which together provide a means to send the ATAES132 commands and receive responses, including status information. 3. Commands The ATAES132 extends the command set of a standard Serial EEPROM to offer additional commands that solve various security challenges. Unrestricted memory regions are accessible using standard Serial EEPROM I2C commands. Restricted user memory regions, as well as security features, are still accessible by using standard I2C commands to ATAES132 [I2C Summary Datasheet] Atmel-8762DS-CryptoAuth-ATAES132-I2C-Datasheet-Summary_072014 5 send extended command bytes to a FIFO address. Responses are read using standard I2C commands from same FIFO address. Table 3-1. Opcode 6 ATAES132 Extended Command Set Summary Name Description 0x03 Auth Performs one-way or mutual authentication using the specified key. 0x15 AuthCheck Checks the output MAC generated by the Auth command or by reading a counter using the Counter command on a second ATAES132 device. 0x14 AuthCompute Computes the input MAC required to execute the Auth command or to increment a counter using the Counter command on a second ATAES132 device. 0x10 BlockRead Reads 1 to 32 bytes of data from User Memory or the Configuration Memory. Returns cleartext data. 0x0A Counter Increments a monontonic counter and/or returns the counter value. 0x0B Crunch Processes a seed value through the internal crunch engine. This function is used to detect clones. 0x07 Decrypt Decrypts 16 or 32 bytes of data provided by the Host after verifying the integrity MAC. 0x04 EncRead Encrypts 1 to 32 bytes of data from User Memory and returns the encrypted data and integrity MAC. 0x06 Encrypt Encrypts 16 or 32 bytes of plaintext data provided by the Host. 0x05 EncWrite Writes 1 to 32 bytes of encrypted data into the User Memory or Key Memory after verifying the integrity MAC. 0x0C Info Returns device information: the MacCount, authentication status, or the hardware revision code. 0x08 KeyCreate Generates a random number, stores it in the Key Memory, and returns the encrypted key to the Host. 0x19 KeyImport Decrypts and writes a key that was output by the KeyCreate command. 0x09 KeyLoad Writes an encrypted key to Key Memory after verifying the integrity MAC. 0x1A KeyTransfer Transfers a key from User Memory to the Key Memory or to the VolatileKey Register. 0x0F Legacy Performs a single AES-ECB mode operation on 16 bytes of data provided by the Host. 0x0D Lock Permanently locks the Configuration Memory or Key Memory. Locked memory can never be unlocked. 0x01 Nonce Generates a 128-bit nonce using the internal random number generator for use by the cryptographic commands. This command can also be used to write a Host nonce directly into the Nonce Register. 0x13 NonceCompute Generates a nonce in a manner that allows two ATAES132 devices to have identical nonce values. ATAES132 [I2C Summary Datasheet] Atmel-8762DS-CryptoAuth-ATAES132-I2C-Datasheet-Summary_072014 Table 3-1. Opcode 4. ATAES132 Extended Command Set Summary (Continued) Name Description 0x02 Random Returns a 128-bit random number from the internal random number generator. 0x00 Reset Resets the device, clearing the cryptographic status. 0x11 Sleep Places the device in the Sleep state or Standby state to reduce power consumption. Power Management Features The ATAES132 supports four power states that offer great flexibility in reducing its power consumption, especially in low-power embedded systems. These are the Active, Standby, Sleep, and Off states. Power consumption ranges from less than 250nA in the Sleep state to 10mA in the Active state. The ATAES132 can power-up into any of the powered states, if so configured. It can also enter the Standby or Sleep states after receipt of a Sleep command from the Host. ATAES132 [I2C Summary Datasheet] Atmel-8762DS-CryptoAuth-ATAES132-I2C-Datasheet-Summary_072014 7 5. Electrical Characteristics 5.1 Absolute Maximum Ratings* Operating Temperature . . . . . . . . . . . .−40C to +85C Storage Temperature . . . . . . . . . . . −65C to + 150C Maximum Operating Voltage . . . . . . . . . . . . . . . . 6.0V DC Output Current. . . . . . . . . . . . . . . . . . . . . . . 5.0mA Voltage on Any Pin . . . . . . . . . . -0.7V to (VCC + 0.7V) HBM ESD . . . . . . . . . . . . . . . . . . . . . . . 3kV minimum 5.2 *Notice: Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress rating only, and functional operation of the device at these or any other condition beyond those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Reliability The ATAES132 is fabricated with Atmel high reliability CMOS EEPROM manufacturing technology. The reliability ratings in Table 5-1 apply to each byte of the EEPROM memory. Table 5-1. EEPROM Reliability(1) Parameter Min Write Endurance (Each byte) Max Units 100,000 Write Cycles Data Retention (At 55C) 10 Years Data Retention (At 35C) 30 Read Endurance Note: 8 Typical 1. 50 Years Unlimited Read Cycles These specifications apply to every byte of the User Memory, Configuration Memory, and Key Memory. The Write Endurance specification also applies to the random number generator EEPROM Seed Register. ATAES132 [I2C Summary Datasheet] Atmel-8762DS-CryptoAuth-ATAES132-I2C-Datasheet-Summary_072014 5.3 DC Characteristics 5.3.1 Supply Voltage and Current Characteristics Applicable over recommended operating range from TA = −40C to +85C, VCC = +2.5V to +5.5V (unless otherwise noted).(1) Symbol VCC (1) Test Conditions Min Supply Voltage Typ 2.50 Max Units 5.50 V ICC1 Supply Current VCC = 3.3V at fmax(4), SO = Open(3), Read, Write, or AES Operation. 6 mA ICC2 Supply Current VCC = 5.5V at fmax(4), SO = Open(3), Read, Write, or AES Operation. 10 mA ICC3 Idle Current VCC = 3.3V or 5.5V at fmax (4), SO = Open (3), Waiting for a Command. 600 800 μA ISL1 Sleep Current VCC = 3.3V, CS = VCC (3), Sleep State 0.10 0.25 μA 0.25 0.50 μA (3) ISL2 Sleep Current VCC = 5.5V, CS = VCC ISB1 Standby Current VCC = 3.3V, CS = VCC (3), Standby State 15 30 μA ISB2 Standby Current VCC = 5.5V, CS = VCC (3), Standby State 20 40 μA Notes: 1. 2. 5.3.2 Parameter , Sleep State Typical values are at 25C, and are for reference only. Typical values are not tested or guaranteed. On power-up, VCC must rise continuously from VSS to the operating voltage, with a rise time no faster than 1V/μs. 3. All input pins must be held at either VSS or VCC during this measurement. 4. Measurement is performed at the maximum serial clock frequency. 5. The ATAES132 does not support hot swapping or hot plugging. Connecting or disconnecting this device to a system while power is energized can cause permanent damage to the ATAES132 device. DC Characteristics Applicable over recommended operating range from TA = −40C to +85C, VCC = +2.5V to +5.5V (unless otherwise noted). Symbol Parameter Test Conditions Min Max Units ILI Input Current VIN = 0V or VCC −3.0 3.0 μA ILO Output Leakage VOUT = 0V or VCC −3.0 3.0 μA VIL(1) Input Low-voltage −0.5 VCC x 0.3 V VIH(1) Input High-voltage VCC x 0.7 VCC + 0.5 V VOL1(1) Output Low-voltage, SDA in I2C Mode IOL = 3.0mA 0 0.4 V VOH1(1) Output High-voltage, SDA in I2C Mode IOH = −3.0mA VCC −0.8 VCC V VOL2 Output Low-voltage, SDA pin in I2C Mode Only IOL = 3.0mA 0 0.4 V Note: 1. VIL min and VIH max are for reference only, and are not tested. ATAES132 [I2C Summary Datasheet] Atmel-8762DS-CryptoAuth-ATAES132-I2C-Datasheet-Summary_072014 9 5.4 AC Characteristics Applicable over recommended operating range from TA = −40C to + 85C, VCC = +2.5V to +5.5V. Symbol Parameter tWC1 tWC2 Note: 5.4.1 1. Min Max Units User Zone Write Cycle Time(1) 6 9 ms Key Zone Write Cycle Time(1) 12 16 ms The Write Cycle Time includes the EEPROM Erase, Write, and Automatic Data Write Verification operations. Power-up, Sleep, Standby, and Wake-up Timing Characteristic(1) Applicable over recommended operating range from TA = −40C to + 85C, VCC = +2.5V to +5.5V. Symbol Parameter tPU.STATUS Typ Max Units Power-up Time, Status 500 600 μs tPU.RDY Power-up Ready Time 1200 1500 μs tSB Sleep Time, Entering the Standby State 65 100 μs tSL Sleep Time, Entering the Sleep State 55 90 μs tWupSB.STATUS Wake-up Status Time, Standby State 50 100 μs tWupSB.RDY Wake-up Ready Time, Standby State 200 240 μs tWupSL.STATUS Wake-up Status, Sleep State 500 600 μs tWupSL.RDY Wake-up Ready Time, Sleep State 1000 1200 μs Note: 10 1. Min All values are based on characterization and are not tested. Typical values are at 25C and are for reference only. ATAES132 [I2C Summary Datasheet] Atmel-8762DS-CryptoAuth-ATAES132-I2C-Datasheet-Summary_072014 5.4.2 I2C Interface Timing Applicable over recommended operating range from TA = −40C to + 85C, VCC = +2.5V to +5.5V, CL = 1 TTL Gate and 100pF (unless otherwise noted). Symbol Parameter Min fSCK SCK Clock Frequency Max Units 1 MHz 70 Percent SCK Clock Duty Cycle 30 tHIGH SCK High Time 400 ns tLOW SCK Low Time 400 ns tSU.STA Start Setup Time 250 ns tHD.STA Start Hold Time 250 ns tSU.STO Stop Setup Time 250 ns tSU.DAT Data In Setup Time 100 ns tHD.DAT Data In Hold Time 0 ns tR Input Rise Time(1) 300 ns tF Input Fall Time(1) 100 ns tAA Clock Low To Data Out Valid 50 550 ns tDH Data Out Hold Time 50 ns tBUF Time bus must be free before a new transmission can start.(1) 500 ns Notes: 1. 2. Values are based on characterization, and are not tested. AC measurement conditions: RL (connects between SDA and VCC): 2.0kΩ (for VCC +2.5V to +5.0V) Input pulse voltages: 0.3 VCC to 0.7 VCC Input rise and fall times: ≤ 50ns Input and output timing reference voltage: 0.5 VCC Figure 5-1. I2C Synchronous Data Timing tHIGH tF tR tLOW tLOW SCL tSU.STA tHD.STA tHD.DAT tSU.DAT tSU.STO SDA IN tAA tDH tBUF SDA OUT ATAES132 [I2C Summary Datasheet] Atmel-8762DS-CryptoAuth-ATAES132-I2C-Datasheet-Summary_072014 11 6. Part Markings The part marking on the packages represents only variable manufacturing lot information and does not contain any reference to the part number. Each reel or shipment may have different markings. Do not use the marking on the IC package to determine product acceptance, instead, use the information on the shipment, reel, or box label. 7. Ordering Information The ATAES132 production ordering codes are listed below. The ATAES132 packages are marked only with a lot trace code and not the ordering code. 7.1 Ordering Codes ATAES132 Ordering Code Package Conditioning ATAES132-SH-ER SOIC Bulk ATAES132-SH-ER-T(1) SOIC Tape and Reel ATAES132-MAH-ER-T(1) UDFN Tape and Reel Note: 1. Interface Configuration Temperature Range I2C -40C to 85C T = Tape and Reel SOIC = 4K per reel UDFN = 5K per reel Package Type SOIC 8-pin SOIC, NiPdAu Lead Finish, Green(1) UDFN 8-pin UDFN/USON 2.00mm x 3.00mm, NiPdAu Lead Finish, Green(1) Note: 12 1. Lead-free, halogen-free package. Exceeds RoHS requirements. ATAES132 [I2C Summary Datasheet] Atmel-8762DS-CryptoAuth-ATAES132-I2C-Datasheet-Summary_072014 7.2 Package Drawings 7.2.1 8S1 — 8-lead JEDEC SOIC C 1 E E1 L N Ø TOP VIEW END VIEW e b COMMON DIMENSIONS (Unit of Measure = mm) A A1 D SIDE VIEW Notes: This drawing is for general information only. Refer to JEDEC Drawing MS-012, Variation AA for proper dimensions, tolerances, datums, etc. SYMBOL MIN A 1.35 NOM MAX – 1.75 A1 0.10 – 0.25 b 0.31 – 0.51 C 0.17 – 0.25 D 4.80 – 5.05 E1 3.81 – 3.99 E 5.79 – 6.20 e NOTE 1.27 BSC L 0.40 – 1.27 Ø 0° – 8° 6/22/11 Package Drawing Contact: [email protected] TITLE 8S1, 8-lead (0.150” Wide Body), Plastic Gull Wing Small Outline (JEDEC SOIC) GPC SWB DRAWING NO. REV. 8S1 G ATAES132 [I2C Summary Datasheet] Atmel-8762DS-CryptoAuth-ATAES132-I2C-Datasheet-Summary_072014 13 7.2.2 8MA2 — 8-pad UDFN E 1 8 Pin 1 ID 2 7 3 6 4 5 D C TOP VIEW A2 SIDE VIEW A A1 E2 b (8x) 8 1 7 D2 6 3 5 4 e (6x) K L (8x) BOTTOM VIEW Notes: COMMON DIMENSIONS (Unit of Measure = mm) 2 Pin#1 ID 1. This drawing is for general information only. Refer to Drawing MO-229, for proper dimensions, tolerances, datums, etc. 2. The Pin #1 ID is a laser-marked feature on Top View. 3. Dimensions b applies to metallized terminal and is measured between 0.15 mm and 0.30 mm from the terminal tip. If the terminal has the optional radius on the other end of the terminal, the dimension should not be measured in that radius area. 4. The Pin #1 ID on the Bottom View is an orientation feature on the thermal pad. SYMBOL MIN NOM MAX A 0.50 0.55 0.60 A1 0.0 0.02 0.05 A2 - - 0.55 D 1.90 2.00 2.10 D2 1.20 - 1.60 E 2.90 3.00 3.10 E2 1.20 - 1.60 b 0.18 0.25 0.30 C L 3 1.52 REF 0.30 e K NOTE 0.35 0.40 0.50 BSC 0.20 - - 6/6/14 Package Drawing Contact: [email protected] 14 TITLE 8MA2, 8-pad 2 x 3 x 0.6mm Body, Thermally Enhanced Plastic Ultra Thin Dual Flat No-Lead Package (UDFN) ATAES132 [I2C Summary Datasheet] Atmel-8762DS-CryptoAuth-ATAES132-I2C-Datasheet-Summary_072014 GPC DRAWING NO. REV. YNZ 8MA2 F 8. Revision History Doc. Rev. Date 8762DS 07/2014 Comments Update ESD from 2000V to 3kV and 8MA2 package drawing. Remove DecRead and WriteCompute commands and TSSOP package option. 8762CS 10/2013 Update KeyExport to KeyCreate. Add SOIC and UDFN package drawings. Update footers and disclaimer page. 8762BS 07/2013 8762AS 05/2011 Ordering code table: add package column, notes, and update ordering codes. Update Atmel logos and disclaimer/copy page. Initial I2C summary document release. ATAES132 [I2C Summary Datasheet] Atmel-8762DS-CryptoAuth-ATAES132-I2C-Datasheet-Summary_072014 15 XXXXXX Atmel Corporation 1600 Technology Drive, San Jose, CA 95110 USA T: (+1)(408) 441.0311 F: (+1)(408) 436.4200 | www.atmel.com © 2014 Atmel Corporation. / Rev.: Atmel-8762DS-CryptoAuth-ATAES132-I2C-Datasheet-Summary_072014 . Atmel®, Atmel logo and combinations thereof, Enabling Unlimited Possibilities®, CryptoAuthentication™, and others are registered trademarks or trademarks of Atmel Corporation in U.S. and other countries. Other terms and product names may be trademarks of others. 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