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Microchip Technology ATECC608A-SSHDA-T
- Part No.:
- ATECC608A-SSHDA-T
- Manufacturer:
- Microchip Technology
- Category:
- Specialized ICs
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Description:
- IC AUTHENTICATION CHIP 8SOIC
- Quantity:
Unit Price:$0.75
Ext Price:$0.75
- Payment:
- Shipping:
Product Details
ATECC608A-SSHDA-T - ECC CryptoAuthentication Secure Element
ATECC608A-SSHDA-T from Microchip Technology is an I2C secure element with protected key storage, NIST P-256 elliptic-curve cryptography, SHA-256/HMAC and AES-128 functions in an 8-lead SOIC package.
ATECC608A is marked not recommended for new designs. Technical values were checked against Microchip's product page, data sheet and migration guidance.
Overview
ATECC608A provides hardware-isolated credentials and cryptographic operations for connected products. It supports ECDSA signing and verification, ECDH key agreement, SHA-256/HMAC, AES-128 including GCM, secure-boot workflows, counters and random-number generation.
Key Advantages
Private keys can be generated and used without leaving protected storage.
P-256 ECDSA and ECDH operations support authentication and session establishment.
Cryptographic commands and protected storage help validate host firmware.
The device operates from 2.0 V to 5.5 V with low sleep current.
Feature Summary
NIST P-256 ECDSA signing/verification and ECDH key agreement.
SHA-256, HMAC and AES-128 including GCM operations.
Up to 16 slots for keys, certificates or application data.
Hardware RNG, monotonic counters and a factory unique 72-bit serial number.
Package & Footprint
The SSHDA-T option is an 8-lead SOIC with I2C interface and tape-and-reel supply. Microchip lists 4,000 units for this reel option.
- Place supply decoupling close to VCC and GND.
- Select I2C pull-ups for the actual bus voltage and capacitance.
- Keep the serial bus away from high-current switching loops.
- Verify SOIC orientation and pin 1 during assembly.
The package record and JPG are present in the LCDChip package library.
Pin Functions
Pins 1, 2, 3 and 7 are no-connect on the I2C SOIC option.
Key Specifications
| ECC | NIST P-256 ECDSA and ECDH |
|---|---|
| Hash / MAC | SHA-256 and HMAC |
| Symmetric cipher | AES-128, including GCM support |
| Protected slots | Up to 16 |
| Unique serial number | 72 bit |
| Interface | I2C, up to 1 MHz |
| Supply voltage | 2.0 V to 5.5 V |
| I/O range | 1.8 V to 5.5 V |
| Sleep current | <150 nA |
| Operating temperature | -40°C to +85°C |
| Package | 8-SOIC |
| Lifecycle | Not recommended for new designs |
Replacement Considerations
ATECC608B-SSHDA-T is the documented form/fit/function migration path, but firmware timing and configuration differences must be reviewed. ATECC608C-SSHDA-T is the current revision to evaluate for new designs.
A programmed secure element is not replaced by part number alone. Preserve certificate chains, slot policies, lock bytes, I2C addressing, host libraries and provisioning custody.
Manufacturer Information
Microchip Technology supplies embedded control and hardware-security products. The ATECC608A remains documented but is NRND; follow Microchip migration guidance when selecting a successor.
Applications
Protects device private keys and client authentication credentials.
Supports validation of firmware before protected execution.
Authenticates peripherals, modules and replaceable components.
ECDH and AES capabilities support protected communication designs.
Quality & Authenticity
Verify the full SSHDA-T ordering code, revision marking and reel traceability. Confirm whether purchased devices are blank or pre-provisioned; certificate and key contents are part of the usable configuration.
FAQ
Is ATECC608A recommended for a new design?
No. Microchip marks it NRND; evaluate the latest compatible revision.
Does it expose private keys to the MCU?
Private keys can remain internal while the device performs signing or key-agreement commands.
Can ATECC608B be substituted without testing?
No. Review configuration compatibility, command timing, host software and provisioning.
What interface is used?
The HDA suffix identifies the I2C option, specified up to 1 MHz.
Engineering Notice
Complete migration and provisioning trials before locking zones or releasing production firmware. Validate wake timing, I2C electrical limits, certificate formats, secure-boot policy and backup custody against the exact device revision.
ATECC608A-SSHDA-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:
- Active
- 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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Inventory:2,966
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In Stock:2,966
| Qty. | Unit Price | Ext. Price |
| 1+ | $0.75 | $0.75 |
| 25+ | $0.75 | $18.75 |
| 4000+ | $0.68 | $2720.00 |
