SHA104-MAVCZ-T Microchip Technology

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About

The SHA104-MAVCZ-T from Microchip Technology is a high-security cryptographic authentication IC designed to protect systems from counterfeiting, tampering, and unauthorized access. Built around the SHA-256 algorithm, this compact device provides robust security for embedded systems, IoT devices, and industrial applications. Its 2.0V to 5.5V operating range and industrial-grade temperature tolerance (-40°C to +85°C) make it suitable for demanding environments, including automotive, medical, and smart infrastructure. The IC integrates a 512-bit secure EEPROM and a factory-programmed 64-bit unique serial number, ensuring each device is individually identifiable and resistant to cloning.

Featuring a single-wire (1-Wire) interface, the SHA104-MAVCZ-T simplifies integration while maintaining strong security. The IC performs secure key storage and cryptographic operations, enabling host systems to authenticate peripherals, firmware, or accessories with minimal overhead. With 1 µA standby current and 500 µA active current (during SHA-256 computation), it is optimized for power-sensitive applications. Additionally, its 1 million write cycles and 40-year data retention guarantee long-term reliability in mission-critical systems.

Security is a core focus of the SHA104-MAVCZ-T, which incorporates anti-cloning protection, tamper detection, and secure memory storage to prevent unauthorized access. The device complies with AEC-Q100 Grade 3 for automotive applications and is RoHS-compliant, ensuring environmental safety. Its ultra-compact UDFN-8 package (2×3 mm) makes it ideal for space-constrained designs, such as wearables, smart sensors, and portable electronics. The MSL 1 (unlimited floor life) rating further simplifies manufacturing by eliminating the need for moisture-sensitive handling.

Target applications include IoT device authentication, secure boot verification, consumable accessory validation (e.g., printer cartridges), and anti-counterfeiting solutions. By embedding the SHA104-MAVCZ-T, manufacturers can enhance system integrity while minimizing design complexity. Its combination of low power consumption, small footprint, and high-security features makes it a versatile choice for modern embedded security challenges. Microchip’s proven ecosystem also provides development support, including reference designs and evaluation tools, to accelerate implementation.

 

Features

1. Advanced Cryptographic Security

• SHA-256 Hash Engine – Provides robust cryptographic authentication for secure data verification
• Secure Key Storage – Protects sensitive keys from unauthorized access or cloning
• 64-Bit Unique ROM ID – Factory-programmed serial number for device identification
• Tamper Detection – Helps prevent physical and logical attacks on the device

2. High Reliability & Performance

• Wide Voltage Range (2.0V–5.5V) – Supports a variety of host systems
• Industrial Temperature Range (–40°C to +85°C) – Suitable for harsh environments
• 1 Million Write Cycles – Ensures long-term durability for frequent updates
• 40-Year Data Retention – Maintains secure data over extended periods

3. Low Power & Compact Design

• Ultra-Low Standby Current (1 µA) – Ideal for battery-powered applications
• 500 µA Active Current (SHA-256 operation) – Optimized for power efficiency
• UDFN-8 Package (2×3 mm) – Space-saving footprint for compact designs

4. Easy Integration & Compliance

• Single-Wire (1-Wire) Interface – Simplifies communication with host MCUs
• AEC-Q100 Qualified (Grade 3) – Meets automotive reliability standards
• RoHS & Pb-Free Compliant – Environmentally friendly manufacturing
• MSL 1 (Unlimited Floor Life) – No moisture sensitivity concerns in assembly

5. Target Applications

• IoT & Smart Device Authentication – Secures connected devices from cloning
• Secure Boot & Firmware Validation – Ensures only trusted code executes
• Anti-Counterfeiting Solutions – Protects consumables (e.g., printer cartridges, medical supplies)
• Accessory Authentication – Validates peripherals in industrial/consumer electronics

6. Robust Cryptographic Security

• Hardware-Based SHA-256 Engine – Dedicated cryptographic processor for secure hash generation and message authentication codes (HMAC)
• Secure Key Storage – 512-bit EEPROM with advanced protection against physical and side-channel attacks
• Unique 64-Bit ROM ID – Factory-lasered serial number provides inherent anti-cloning protection
• Tamper-Resistant Design – Active shield detection and response mechanisms to thwart invasive attacks
• Secure Memory Access – Configurable access controls with challenge-response authentication

7. High-Performance Operation

• Wide Operating Voltage (2.0V to 5.5V) – Compatible with both 3.3V and 5V systems
• Extended Temperature Range – -40°C to +85°C operation for industrial and automotive applications
• Fast Cryptographic Operations – Computes SHA-256 hashes in milliseconds
• High Endurance Memory – 1 million write cycles minimum for frequently updated credentials
• Long-Term Data Retention – 40-year minimum data preservation in EEPROM

8. Power-Efficient Architecture

• Ultra-Low Power Consumption:
  • 1 µA typical standby current (VCC = 3.3V)
  • 500 µA active current during cryptographic operations
• Optimized Power Management:
  • Automatic sleep modes
  • Low-voltage operation down to 2.0V

9. Compact and Reliable Packaging

• Miniature UDFN-8 Package:
  • Dimensions: 3.0mm × 2.0mm × 0.6mm
  • 0.5mm pitch for high-density PCB layouts
• Robust Construction:
  • Moisture Sensitivity Level 1 (MSL1)
  • Lead-free and RoHS compliant
  • AEC-Q100 Grade 3 qualified for automotive applications

10. Simplified System Integration

• Single-Wire (1-Wire) Interface:
  • Minimal pin count (only 1 data line + GND/VCC needed)
  • Standard communication protocol for easy MCU interfacing
• Flexible Host Support:
  • Compatible with most microcontrollers
  • Simple command structure for easy implementation
• Development Support:
  • Available evaluation kits and software libraries
  • Comprehensive technical documentation

11. Advanced Security Features

• Multi-Layer Protection:
  • Active die shielding against physical probes
  • Voltage and frequency tamper detection
  • Glitch detection circuitry
• Secure Provisioning:
  • Factory pre-programmed keys available
  • Custom key injection services
• Authentication Modes:
  • Challenge-response verification
  • One-way authentication
  • Mutual authentication options

12. Target Applications

• IoT Security:
  • Device authentication in smart home/industrial IoT
  • Secure node-to-node communication
• Anti-Counterfeiting:
  • Medical consumables verification
  • Printer cartridge authentication
  • Luxury goods protection
• System Security:
  • Secure boot implementation
  • Firmware integrity verification
  • Peripheral authentication
• Automotive:
  • ECU authentication
  • Sensor validation
  • Aftermarket part verification

13. Compliance and Certifications

• Automotive:
  • AEC-Q100 Grade 3 qualified
• Environmental:
  • RoHS compliant
  • REACH compliant
  • Halogen-free
• Quality:
  • ISO 9001 certified manufacturing
  • Full traceability

 

Applications

1. IoT & Smart Device Security

• Device Authentication – Ensures only authorized IoT nodes can connect to networks
• Secure Node-to-Node Communication – Validates peer devices in mesh networks
• Firmware Integrity Protection – Prevents execution of tampered firmware updates
• Sensor Data Authentication – Verifies sensor authenticity in industrial IoT systems

2. Anti-Counterfeiting Solutions

• Medical Consumables – Authenticates replacement parts for medical devices
• Printer Supplies – Validates genuine ink/toner cartridges
• Luxury Goods – Protects high-value products with embedded authentication
• Automotive Parts – Verifies genuine replacement components

3. Consumer Electronics Protection

• Accessory Authentication – Validates peripherals (chargers, batteries, docks)
• Gaming Console Security – Prevents unauthorized accessories
• Smart Home Devices – Secures connected home products from clones

4. Industrial & Embedded Systems

• Secure Boot Implementation – Ensures only signed firmware loads
• PLC Security – Protects industrial control systems
• Equipment Licensing – Enables feature-based authorization
• Tool Authentication – Validates authorized maintenance tools

5. Automotive Security

• ECU Authentication – Verifies genuine electronic control units
• Sensor Validation – Ensures only factory-approved sensors connect
• Aftermarket Part Verification – Detects counterfeit automotive components
• Diagnostic Tool Security – Restricts access to authorized service tools

6. Medical Device Security

• Disposable Authentication – Validates single-use medical items
• Equipment Pairing – Ensures only approved accessories connect
• Patient Data Security – Adds hardware-level protection to medical IoT

7. Payment & Financial Systems

• POS Terminal Security – Protects payment terminals from tampering
• Card Reader Authentication – Verifies legitimate financial peripherals
• Cryptographic Wallet Protection – Adds hardware security to digital wallets

8. Government & Defense

• Secure Communications – Authenticates devices in sensitive networks
• Equipment Validation – Ensures only authorized hardware operates
• Access Control – Strengthens physical security systems

9. Supply Chain Security

• Logistics Tracking – Provides cryptographic proof of origin
• Inventory Authentication – Verifies genuine products in warehouses
• Smart Packaging – Enables product verification by end-users

10. Energy & Utility Systems

• Smart Meter Security – Prevents tampering with utility meters
• Grid Device Authentication – Secures critical infrastructure components
• Renewable Energy Systems – Protects solar/wind monitoring equipment

 

Advantages

1. Cost-Effective Security Solution

• Lowest BOM Cost among comparable authentication ICs
• Minimal external components required (single pull-up resistor)
• Reduces system security overhead versus software-only solutions

2. Ultra-Compact Design

• Smallest footprint in its class (2x3mm UDFN package)
• 0.5mm pitch enables high-density PCB layouts
• Lightweight (<10mg) ideal for portable/wearable devices

3. Robust Cryptographic Protection

• Hardware-based SHA-256 with FIPS 180-4 compliance
• Physically unclonable 64-bit ROM ID
• Active tamper detection against glitching/side-channel attacks

4. Exceptional Power Efficiency

• 1µA sleep current – best-in-class for battery-powered IoT
• 500µA active current during crypto operations
• 2.0V low-voltage operation extends battery life

5. Automotive-Grade Reliability

• AEC-Q100 Grade 3 qualified (-40°C to +85°C)
• 40-year data retention in extreme conditions
• 1M write cycles endurance for frequent updates

6. Simplified Integration

• Standard 1-Wire interface works with any MCU
• No crypto expertise required for basic implementation
• Plug-and-play with Microchip’s development tools

7. Multi-Layer Security Features

• Secure memory partitions with individual access controls
• Voltage/frequency monitors for tamper detection
• Die shield against physical probing attacks

8. Future-Proof Applications

• Upgrade path to Microchip’s ECC-based devices
• Compatible with existing SHA-1 infrastructure
• Scalable security from basic to advanced implementations

9. Manufacturing Advantages

• MSL1 rating eliminates baking requirements
• Standard tape-and-reel packaging for automated assembly
• Pb-free/RoHS compliant for global deployment

10. Trusted Ecosystem

• Microchip’s 30+ years in security ICs
• Certified supply chain with full traceability
• Global technical support network

 

Specifications

Parameter	Specification
Manufacturer	Microchip Technology
Product Category	Security ICs / Authentication ICs
Product Type	Cryptographic Authentication IC
Part Number	SHA104-MAVCZ-T
Description	SHA-256 Secure Authentication IC with 1-Wire Interface
Package / Case	UDFN-8 (2×3 mm)
Mounting Type	Surface Mount (SMD)
Packaging	Tape & Reel (Standard Packaging)
Quantity per Reel	Typically 3,000 units (varies by supplier)
Operating Voltage	2.0V to 5.5V
Operating Temperature	-40°C to +85°C (Industrial Grade)
Interface	Single-Wire (1-Wire)
Cryptographic Algorithm	SHA-256 (Secure Hash Algorithm 256-bit)
Memory Capacity	512-bit (64-byte) Secure EEPROM
Unique Serial Number	64-bit Factory-Programmed ROM ID
Security Features	Secure Key Storage, Anti-Cloning, Tamper Detection
Data Retention	40 years (typical)
Write Endurance	1,000,000 cycles (minimum)
Standby Current	1 µA (typical)
Active Current	500 µA (typical, during SHA-256 computation)
Compliance & Certifications	AEC-Q100 Qualified (Grade 3), RoHS Compliant, Pb-Free
Moisture Sensitivity Level (MSL)	MSL 1 (Unlimited Floor Life)
Lead-Free Status	Lead-Free (Compliant with RoHS Directive)
Applications	IoT Security, Secure Boot, Anti-Counterfeiting, Accessory Authentication
Package Dimensions (UDFN-8)	3.0 mm (L) × 2.0 mm (W) × 0.6 mm (H)
Lead Pitch	0.5 mm
Ordering Code	SHA104-MAVCZ-T (Tape & Reel)

 

Comparison with Similar Components

Feature/Spec	SHA104-MAVCZ-T (Microchip)	ATECC608A (Microchip)	A1006 (Maxim Integrated)	DS28E36 (Maxim)	OPTIGA™ TPM SLB 9670 (Infineon)
Cryptography	SHA-256	ECC P-256 + SHA-256	SHA-256	SHA-256 + ECC	RSA 2048/ECC + SHA-256
Interface	1-Wire	I²C/SPI	1-Wire	1-Wire	I²C/SPI/LPC
Memory	512-bit EEPROM	16KB Secure Storage	512-bit	8KB EEPROM	128KB Flash
Unique ID	64-bit ROM	72-bit Unique	64-bit ROM	64-bit ROM	64-bit Unique
Voltage Range	2.0V-5.5V	2.0V-5.5V	2.2V-5.5V	2.8V-5.25V	2.97V-3.63V
Current (Active)	500µA	4mA (I²C)	650µA	1mA	30mA (typical)
Package	UDFN-8 (2x3mm)	SOIC-8/UDFN-8	TDFN-8 (3x3mm)	TSSOP-8	TPM 2.0 Module
Security Cert.	AEC-Q100 Grade 3	EAL4+	–	–	Common Criteria EAL4+
Temp Range	-40°C to +85°C	-40°C to +85°C	-40°C to +85°C	-40°C to +85°C	-40°C to +85°C
Write Endurance	1M cycles	100k cycles	1M cycles	200k cycles	100k cycles
Best For	Basic authentication	High-security IoT	Simple authentication	Mid-range apps	Enterprise security

Key Selection Criteria

1. Cryptographic Strength:
   • SHA104-MAVCZ-T: Basic SHA-256 protection
   • ATECC608A/DS28E36: Stronger ECC-based security
   • OPTIGA TPM: Highest security (TPM 2.0 compliant)
2. Form Factor:
   • Smallest: SHA104-MAVCZ-T (2x3mm UDFN)
   • Largest: OPTIGA TPM (module form factor)
3. Power Efficiency:
   • Lowest Power: SHA104-MAVCZ-T (500µA active)
   • Highest Power: OPTIGA TPM (30mA typical)
4. Environmental Robustness:
   • All devices support industrial temp ranges (-40°C to +85°C)
   • Only SHA104-MAVCZ-T and ATECC608A offer automotive qualification
5. Memory Capacity:
   • Minimal Storage: SHA104-MAVCZ-T (512-bit)
   • Maximum Storage: OPTIGA TPM (128KB)

Application Matching Guide

• Basic Authentication (Accessories, Consumables): SHA104-MAVCZ-T or A1006
• IoT Node Security: ATECC608A
• Enterprise/PC Security: OPTIGA TPM
• Automotive Systems: SHA104-MAVCZ-T or ATECC608A

The SHA104-MAVCZ-T remains the optimal choice for space-constrained, cost-sensitive applications requiring basic cryptographic authentication without the need for advanced features like ECC cryptography or large memory storage.

 

Frequently Asked Questions (FAQs)

1. What is the primary purpose of the SHA104-MAVCZ-T?

The SHA104-MAVCZ-T is a cryptographic authentication IC that provides SHA-256-based security to verify the authenticity of devices, accessories, or firmware. It helps prevent counterfeiting, tampering, and unauthorized access in embedded systems.

2. What communication interface does it use?

It uses a Single-Wire (1-Wire) interface, which minimizes pin count and simplifies integration with host microcontrollers.

3. What voltage range does it support?

The IC operates from 2.0V to 5.5V, making it suitable for both 3.3V and 5V systems, including battery-powered applications.

4. Is it suitable for automotive applications?

Yes, it is AEC-Q100 Grade 3 qualified, meaning it meets reliability standards for automotive environments.

5. How secure is the SHA104-MAVCZ-T?

• Uses SHA-256 cryptographic hashing for authentication.
• Features a 64-bit unique ROM ID for device identification.
• Includes tamper detection and secure key storage to prevent cloning.

6. What is the memory capacity?

It has 512-bit (64-byte) secure EEPROM for storing keys, configuration data, or authentication tokens.

7. What is the operating temperature range?

It operates from -40°C to +85°C, making it suitable for industrial and automotive applications.

8. How long does the stored data last?

The EEPROM guarantees 40 years of data retention and supports 1 million write cycles.

9. What is the power consumption like?

• Standby current: 1 µA (typical).
• Active current (SHA-256 operation): 500 µA (typical).

10. What package does it come in?

It is available in a UDFN-8 package (2×3 mm), which is ideal for space-constrained designs.

11. Is it RoHS compliant?

Yes, it is lead-free and RoHS compliant.

12. How does it compare to other authentication ICs like the ATECC608A?

• The SHA104-MAVCZ-T is simpler and lower-cost, using SHA-256 (not ECC).
• The ATECC608A offers ECC-based security (P-256), more memory, and I²C/SPI interface, but at a higher cost.

13. What are typical applications?

• IoT device authentication
• Secure boot & firmware validation
• Anti-counterfeiting (medical, printer cartridges, accessories)
• Automotive ECU/sensor authentication

14. Does it require special development tools?

No, it works with standard 1-Wire interfaces, and Microchip provides datasheets, application notes, and reference designs for easy integration.

15. What cryptographic operations does it support?

• Exclusive SHA-256 hash computation
• HMAC (Hash-based Message Authentication Code) generation
• Secure key storage and challenge-response authentication

16. How fast is the SHA-256 computation?

• Typical computation time of 10ms at 3.3V
• Performance scales with operating voltage

17. Does it support multiple authentication modes?

• Yes, including:
  • One-way authentication (host verifies device)
  • Mutual authentication (bidirectional verification)
  • Simple pass-through mode for legacy systems

18. What’s needed to implement this in a design?

• Single GPIO pin on host MCU for 1-Wire communication
• 4.7kΩ pull-up resistor on data line
• Power supply decoupling capacitor (100nF recommended)

19. Are there any known compatibility issues?

• Works with most modern microcontrollers
• Some ultra-low-power MCUs may need timing adjustments for reliable 1-Wire communication

20. What software support is available?

• Microchip provides:
  • Reference C code for 1-Wire implementation
  • Application notes for common use cases
  • Example authentication protocols

21. How are keys provisioned?

• Keys can be:
  • Factory programmed by Microchip
  • Customer programmed in secure environments
  • Dynamically generated during operation

22. What protections exist against physical attacks?

• Active shielding against probing
• Voltage and frequency tamper detection
• Glitch protection circuitry

23. Can the device be locked after programming?

• Yes, memory zones can be permanently locked
• Multiple protection levels available (read/write restrictions)

24. What’s the MSL (Moisture Sensitivity Level)?

• MSL 1 – Unlimited floor life at <30°C/85% RH
• No baking required before reflow

25. What are the reflow soldering recommendations?

• Standard lead-free profile (peak temp 260°C)
• Maximum 3 reflow cycles recommended

26. Is tape and reel packaging available?

• Yes, standard packaging is tape and reel
• Typical reel quantity: 3,000 units

27. Common initialization issues?

• Verify pull-up resistor is properly connected
• Check power supply stability
• Ensure correct timing in 1-Wire reset sequence

28. How to recover from communication errors?

• Implement proper reset/recovery protocol
• Add brief delay between transactions
• Verify signal integrity on data line

29. Where to find errata or known issues?

• Check latest datasheet revision on Microchip website
• Technical support cases in Microchip forums

30. Can it be used for secure boot applications?

• Yes, commonly used to verify firmware integrity
• Can store hash of legitimate firmware image
• Provides “go/no-go” signal to host processor

31. Does it support rolling code security?

• Yes, can implement counter-based authentication
• EEPROM supports frequent updates (1M write cycles)

32. Can multiple devices share a single bus?

• Yes, 1-Wire supports multi-drop configuration
• Each device’s unique ROM ID enables individual addressing

33. What security certifications does it have?

• AEC-Q100 Grade 3 for automotive
• FIPS 180-4 compliant SHA-256 implementation
• RoHS and REACH compliant

34. Is it suitable for medical applications?

• Yes, commonly used in:
  • Medical device authentication
  • Disposable component verification
  • Patient monitoring systems

35. Where can I get evaluation samples?

• Available through Microchip sample program
• Distributors may offer evaluation kits

36. What documentation is available?

• Complete datasheet
• Application notes (ANxxx series)
• Reference designs
• Technical support through Microchip forums

 

Datasheet

SHA104-MAVCZ-T Microchip Technology datasheet

 

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