ATECC608A-MAHHL-S Microchip Integrated Circuit (Small Outline No-lead) In Stock
ATECC608A-MAHHL-S is a Microchip CryptoAuthentication hardware security IC providing ECDH, ECDSA, and AES-128 cryptographic acceleration with a secure key storage for IoT and embedded authentication. It operates from 2 V to 5.5 V via I2C or single-wire UART interface in a compact 8-pad UDFN package. Ideal for securing firmware, node authentication, and encrypted data storage in connected devices.
- Manufacturer
- Microchip
- Package
- Small Outline No-lead
- Pin Count
- 9
- Lifecycle
- NOT RECOMMENDED
- Datasheet
- ATECC608A-MAHHL-S Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Hardware-accelerated ECDH and ECDSA with NIST P-256 curve enables strong public-key authentication without consuming host MCU cycles
- AES-128 encryption engine and secure key storage protect up to 16 keys in tamper-resistant hardware, preventing software extraction
- Dual-interface I2C and single-wire UART support flexible integration with virtually any microcontroller platform at 2 V to 5.5 V
- Ultra-compact 8-pad UDFN package (2 mm x 3 mm) enables security hardware addition with minimal PCB area impact
Applications
The ATECC608A-MAHHL-S is used to add hardware-root-of-trust security to IoT nodes, industrial sensors, and smart home devices without requiring a secure microcontroller, offloading cryptographic operations from the host processor. It is widely adopted in firmware anti-counterfeiting, certificate-based cloud authentication (AWS IoT, Azure IoT), and secure boot chains for ARM Cortex-M based products. Medical devices, automotive accessory authentication, and industrial equipment license control also leverage its tamper-resistant key storage to prevent unauthorized cloning.
Specifications
| YTEOL | 3 |
| Bus Compatibility | I2C, UART |
| JESD-30 Code | R-PDSO-N8 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOLCC8,.11X.07,20 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE |
| Screening Level | TS 16949 |
| Supply Voltage-Max | 5.5V |
| Supply Voltage-Min | 2V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Form | NO LEAD |
| Terminal Pitch | 0.5mm |
| Terminal Position | DUAL |
| uPs/uCs/Peripheral ICs Type | CRYPTOGRAPHIC AUTHENTICATOR |
| Package | Small Outline No-lead |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | 5A992.C |
| HTS Code | 8542.39.00.01 |
| Country of Origin | Thailand |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for ATECC608A-MAHHL-S:
Frequently Asked Questions
What cryptographic algorithms does ATECC608A-MAHHL-S accelerate, and what key lengths are supported?
The ATECC608A-MAHHL-S supports hardware-accelerated ECDH and ECDSA using the NIST P-256 elliptic curve with 256-bit keys, as well as AES-128 symmetric encryption. It also includes SHA-256 hash and HMAC-SHA-256 for message authentication, providing a complete cryptographic toolkit without loading the host microcontroller with software crypto routines that can take hundreds of milliseconds.
How does ATECC608A-MAHHL-S secure firmware in an IoT device against cloning and reverse engineering?
The ATECC608A-MAHHL-S stores up to 16 cryptographic keys in a tamper-resistant hardware vault that prevents extraction even under physical decapping or probing attacks. During boot, the host MCU sends a challenge; the device signs it using an ECDSA private key stored internally, and the response is verified against a known public key — if the signature fails, the device refuses to operate. This challenge-response over I2C takes under 1 ms, adding negligible boot latency while blocking 99% of commodity cloning attempts.
Which supply voltages and communication interfaces does ATECC608A-MAHHL-S support for microcontroller integration?
ATECC608A-MAHHL-S operates from 2 V to 5.5 V supply voltage and supports both I2C (up to 1 MHz) and single-wire UART interfaces. This dual-interface flexibility means it can connect directly to 1.8 V or 3.3 V ARM Cortex-M MCUs via I2C using just 2 signal lines, or to simpler 8-bit microcontrollers using the single-wire interface with only 1 GPIO pin.
How does ATECC608A-MAHHL-S integrate with AWS IoT or Azure IoT Hub for certificate-based device authentication?
ATECC608A-MAHHL-S comes pre-provisioned from Microchip's secure manufacturing facility with a unique device certificate signed by a Microchip root CA, which can be registered with AWS IoT or Azure IoT Hub in minutes using Microchip's Trust Platform tools. The device performs ECDSA-based mutual TLS authentication during MQTT connection setup, generating the session signature in hardware in under 50 ms, making certificate-based cloud authentication practical even on resource-constrained devices with 32 KB of RAM.
What package does ATECC608A-MAHHL-S use and how small is its PCB footprint compared to a discrete crypto MCU?
ATECC608A-MAHHL-S comes in an 8-pad UDFN (Small Outline No-lead) package measuring 2 mm x 3 mm, occupying under 7 mm² of PCB area. This is typically 5x to 10x smaller than adding a dedicated secure element as a second microcontroller. The ultra-thin profile and reflow-compatible package allow placement on the back side of densely populated IoT module PCBs with minimal layout impact.
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