ATECC608A-SSHCZ-T

Part: ATECC608A — Microchip Type: Cryptographic Co-Processor Description: A high-security cryptographic co-processor with secure hardware-based key storage, supporting asymmetric (ECDSA, ECDH) and symmetric (SHA-256, AES-128) algorithms, and featuring a high-quality RNG, unique 72-bit serial number, and I2C or Single Pin Interface.

Operating Conditions:

• Supply voltage: 2.0V to 5.5V
• IO Levels: 1.8V to 5.5V
• Operating temperature: -40°C to +85°C
• I2C interface speed: up to 1 Mb/s

Absolute Maximum Ratings:

• Max supply voltage: 6.0V
• Max continuous current: 5.0 mA (DC Output Current)
• Max storage temperature: +150°C

Key Specs:

• Sleep Current: <150 nA
• EEPROM Write Endurance: 400,000 Write Cycles (at +85°C, Each Byte)
• EEPROM Data Retention: 10 Years (at +55°C)
• EEPROM Data Retention: 30 Years (at +35°C)
• EEPROM Read Endurance: Unlimited Read Cycles
• Power-Up Delay (tPU): 100 μs (Minimum time between VCC > VCC min prior to measurement of tWLO)
• Wake Low Duration (tWLO): 60 μs
• Wake High Delay to Data Comm. (tWHI): 1500 μs
• Watchdog Timeout (Config.ChipMode.Bit2 is 0): 0.7 s (Typ 1.3 s, Max 1.7 s)

Features:

• Protected Storage for up to 16 Keys, Certificates or Data
• Hardware Support for ECDSA, ECDH, SHA-256, HMAC, AES-128
• NIST Standard P256 Elliptic Curve Support
• Turnkey PRF/HKDF calculation for TLS 1.2 & 1.3
• Internal High-Quality NIST SP 800-90A/B/C Random Number Generator (RNG)
• Two High-Endurance Monotonic Counters
• Guaranteed Unique 72-bit Serial Number
• High-speed Single Pin Interface or 1 MHz Standard I2C Interface

Applications:

• IoT network endpoint key management & exchange
• Encryption for small messages and PII data
• Secure Boot and Protected Download
• Ecosystem Control, Anti-cloning

Package:

• 8-pad UDFN
• 8-lead SOIC
• 3-lead Contact

• Cryptographic Co-Processor with Secure Hardware-based Key Storage:
• -Protected Storage for up to 16 Keys, Certificates or Data
• Hardware Support for Asymmetric Sign, Verify, Key Agreement:
• -ECDSA: FIPS186-3 Elliptic Curve Digital Signature
• -ECDH: FIPS SP800-56A Elliptic Curve Diffie-Hellman
• -NIST Standard P256 Elliptic Curve Support
• Hardware Support for Symmetric Algorithms:
• -SHA-256 & HMAC Hash including off-chip context save/restore
• -AES-128: Encrypt/Decrypt, Galois Field Multiply for GCM
• Networking Key Management Support:
• -Turnkey PRF/HKDF calculation for TLS 1.2 & 1.3
• -Ephemeral key generation and key agreement in SRAM
• -Small message encryption with keys entirely protected
• Secure Boot Support:
• -Full ECDSA code signature validation, optional stored digest/signature
• -Optional communication key disablement prior to secure boot
• -Encryption/Authentication for messages to prevent on-board attacks
• Internal High-Quality NIST SP 800-90A/B/C Random Number Generator (RNG)
• Two High-Endurance Monotonic Counters
• Guaranteed Unique 72-bit Serial Number
• Two Interface Options Available:
• -High-speed Single Pin Interface with One GPIO Pin
• -1 MHz Standard I 2 C Interface
• 1.8V to 5.5V IO Levels, 2.0V to 5.5V Supply Voltage
• <150 nA Sleep Current
• 8-pad UDFN and 8-lead SOIC Packages

• IoT network endpoint key management & exchange
• Encryption for small messages and PII data
• Secure Boot and Protected Download
• Ecosystem Control, Anti-cloning

Table 1. Pin Configuration

Figure 1. Pinouts

Table 1. Pin Configuration

(Top View)

1

2

3

SDA

GND

VCC

Note: START, ZLO, ZHI, and BIT are designed to be compatible with a standard UART running at 230.4 Kbaud for both transmit and receive. The UART should be set to seven data bits, no parity and one Stop bit.

Operating Temperature

-40°C to +85°C

Storage Temperature

-65°C to +150°C

Maximum Operating Voltage

6.0V

DC Output Current

5.0 mA

Voltage on any pin -0.5V to (VCC + 0.5V)

-0.5V to (VCC + 0.5V)

Note: 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 conditions beyond those indicated in the operational sections of this specification are not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.

© 2017 Microchip Technology Inc.