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Winbond Electronics Corporation W74M25JVSFIQ TR
- Part No.:
- W74M25JVSFIQ TR
- Manufacturer:
- Winbond Electronics Corporation
- Category:
- Memory
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
W74M25JVSFIQ TR.pdf
- Description:
- IC FLASH 256MBIT SPI/QUAD 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,788
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Product details
Overview
W74M25JVSFIQ TR from Winbond is a 256Mb (32MB) secure authentication flash memory IC with integrated HMAC-SHA-256 crypto accelerator and four independent monotonic flash counters, each HMAC-signed with unique secret keys; used for root-of-trust establishment in IoT edge nodes, mobile accessories, and industrial control modules requiring anti-cloning and firmware IP protection.
For engineers reviewing the W74M25JVSFIQ TR datasheet, W74M25JVSFIQ TR pinout, W74M25JVSFIQ TR application, or W74M25JVSFIQ TR equivalent, key selection criteria include authenticated counter integrity, 3V supply compatibility, WSON-8 (6×5 mm) package footprint, and support for replay-resistant timestamped message signing in embedded security subsystems.
Technical Context
The W74M25JVSFIQ TR implements a dedicated hardware HMAC-SHA-256 engine for cryptographic signing and verification, operating independently of host MCU resources. It supports four isolated monotonic counters, each bound to a unique secret key stored in tamper-resistant non-volatile memory.
Counter updates require valid HMAC signatures; read operations return both counter value and signature, enabling remote authenticity verification. The device uses standard SPI interface (mode 0/3) with dual/quad I/O support and operates at 3.0V ±0.3V across –40°C to +85°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Flash Density | 256Mb (32MB) - provides sufficient space for secure boot code, keys, and signed firmware metadata storage. |
| Supply Voltage | 3.0V ±0.3V - compatible with common 3.3V logic domains without level-shifting in industrial and IoT host systems. |
| Crypto Engine | HMAC-SHA-256 hardware accelerator - offloads cryptographic signing/verification from host MCU, reducing latency and CPU load. |
| Monotonic Counters | 4 independent counters, each HMAC-signed with unique secret key - enables separate versioning/tracking for firmware, calibration data, usage logs, and security events. |
| Operating Temp | –40°C to +85°C - qualified for extended industrial temperature range deployment in smart home and factory automation equipment. |
| Interface | SPI (modes 0/3), dual/quad I/O - supports high-speed secure data exchange with minimal pin count on resource-constrained microcontrollers. |
Pinout & Package
W74M25JVSFIQ TR is housed in a RoHS-compliant, lead-free WSON-8 package measuring 6 mm × 5 mm with exposed thermal pad (SFIQ suffix denotes this variant). Pin pitch is 0.5 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 / /CS | Chip Select | Active-low enable for SPI command sequence; must be asserted before clock/data activity. |
| 2 / DO (IO1) | Data Output / I/O 1 | Serial data output in standard SPI; bidirectional in dual/quad mode for high-throughput reads. |
| 3 / /WP | Write Protect | Hardware lock for status register and protected sectors; tied high to disable write protection. |
| 4 / GND | Ground | Reference return path for power and signals; connects to PCB thermal pad for thermal dissipation. |
| 5 / DI (IO0) | Data Input / I/O 0 | Serial data input in standard SPI; bidirectional in dual/quad mode for command/address/data writes. |
| 6 / CLK | Serial Clock | Input clock synchronizing all SPI transfers; max frequency 104 MHz in quad mode. |
| 7 / /HOLD | Hold Control | Pauses ongoing SPI transfer without deselecting device; useful for multi-master arbitration. |
| 8 / VCC | Power Supply | 3.0V core and I/O supply; requires local 1 µF ceramic decoupling adjacent to pin. |
Key Features
| Feature | Design Value |
|---|---|
| Four HMAC-signed monotonic counters | Enables independent, tamper-evident lifecycle tracking for firmware versions, calibration cycles, security events, and usage metrics. |
| Hardware HMAC-SHA-256 engine | Delivers deterministic, side-channel resistant signing/verification without host CPU involvement or software library dependencies. |
| Secure key storage | Secret keys are permanently fused and inaccessible via any interface-prevents extraction even under physical probing. |
| Replay attack resistance | Each counter update includes cryptographically bound timestamp; repeated transmission of prior values fails signature validation. |
| WSON-6×5-mm package | Reduces PCB area by ~40% vs. SOIC-8 while maintaining thermal performance via exposed pad-ideal for compact IoT modules. |
Applications
| PCBA Anti-Copy Protection | Mobile Accessory Authentication |
|---|---|
Use Scenario: Prevent unauthorized duplication of production PCBAs during contract manufacturing or after market distribution. IC Role / Device Role / Timing Role: W74M25JVSFIQ TR stores HMAC-signed board serial number and manufacturing date; host MCU validates signature before enabling full functionality. Use Value: Blocks cloned boards from operating-even with identical firmware-because counter-based signature binding is unique per unit and unclonable. | Use Scenario: Authenticate OEM-certified cables, chargers, and audio dongles connected to smartphones or tablets. IC Role / Device Role / Timing Role: W74M25JVSFIQ TR acts as secure identity anchor; host negotiates cryptographic challenge-response using monotonic counter state. Use Value: Enables dynamic, time-bound authentication that prevents static credential replay-critical for USB-C and Lightning accessory ecosystems. |
| Industrial Firmware Integrity | Smart Home Root of Trust |
Use Scenario: Ensure only signed, version-locked firmware images execute on PLC controllers or motor drives after field updates. IC Role / Device Role / Timing Role: W74M25JVSFIQ TR verifies HMAC signature of firmware header and monotonic counter before allowing boot ROM to load image. Use Value: Guarantees firmware rollback prevention and detects malicious overwrites-each update increments a dedicated counter with cryptographically bound timestamp. | Use Scenario: Establish immutable trust anchor in Wi-Fi/BLE gateways, thermostats, or lighting hubs to prevent unauthorized cloud pairing or OTA injection. IC Role / Device Role / Timing Role: W74M25JVSFIQ TR holds device identity keys and signs sensor data packets with monotonic counter-derived nonces. Use Value: Provides hardware-enforced chain of trust from boot to cloud, satisfying Matter/Thread security certification requirements for consumer IoT. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar secure authentication flash applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| W74M25JW | Same 256Mb density and HMAC-SHA-256 engine, but rated for 1.8V supply (1.7–1.95V); no industrial temp grade. | Targeted at battery-powered portable devices where ultra-low voltage operation is mandatory. | Select W74M25JW only if system rail is strictly 1.8V and ambient temperature stays within 0°C–70°C. |
| ATSHA204A-TNGTLS | Dedicated secure authenticator (no flash memory); 48-bit monotonic counter; SHA-256 only (no HMAC acceleration). | Lacks code storage capability; suited for simple challenge-response authentication, not firmware/IP protection. | Choose ATSHA204A-TNGTLS when only identity attestation is needed and external flash handles code storage. |
Compared with W74M25JW and ATSHA204A-TNGTLS, the W74M25JVSFIQ TR uniquely combines 256Mb secure flash, four independent HMAC-signed counters, and industrial-grade 3V operation-making it the only option supporting full firmware integrity + anti-cloning + timestamped event logging in one chip.
Availability
W74M25JVSFIQ TR is available at Aetrix Electronics and suitable for PCBA anti-copy protection, mobile accessory authentication, and industrial firmware integrity verification requiring stable component supply and long-term lifecycle assurance.
Supply support for W74M25JVSFIQ TR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Winbond Electronics Corp. is a Taiwan-based integrated IC company specializing in design, fabrication, and marketing of low-to-medium-density memory solutions, including NOR/NAND flash and DRAM.
The W74M product line was developed to deliver hardware-rooted security for resource-constrained IoT endpoints-integrating authenticated storage, cryptographic acceleration, and tamper-resistant monotonic counting in a single SPI flash package.
FAQ
What security functions does the W74M25JVSFIQ TR provide beyond standard SPI flash?
The W74M25JVSFIQ TR integrates a hardware HMAC-SHA-256 crypto engine and four independent monotonic flash counters, each signed with a unique secret key. Unlike standard SPI flash, it enables replay-resistant timestamped message signing, firmware integrity verification, and hardware-enforced anti-cloning-without relying on host MCU resources. These capabilities are intrinsic to the W74M25JVSFIQ TR silicon architecture.
Is the W74M25JVSFIQ TR pin-compatible with other Winbond W74M variants?
Yes-the W74M25JVSFIQ TR shares identical pinout and footprint with other W74Mx5Jx variants in WSON-8 (6×5 mm), including W74M51JV and W74M12JV. All use the same SPI interface mapping and power/ground layout, enabling drop-in replacement within the same voltage grade (3V series). This consistency simplifies design reuse across density options in the W74M family.
How does the W74M25JVSFIQ TR prevent firmware rollback attacks?
The W74M25JVSFIQ TR uses four monotonic counters, each incremented only upon successful HMAC-verified firmware update. Since counters cannot decrement and their values are cryptographically bound to secret keys, host firmware validates counter progression before loading new images. This ensures W74M25JVSFIQ TR enforces strict monotonicity-blocking rollback to older, potentially vulnerable versions.
Does the W74M25JVSFIQ TR require external secure elements or trusted platform modules?
No-the W74M25JVSFIQ TR embeds all required security primitives internally: HMAC-SHA-256 engine, four monotonic counters, and tamper-resistant key storage. It operates as a standalone root-of-trust anchor without external secure elements. Host systems interact via standard SPI commands, and the W74M25JVSFIQ TR handles all cryptographic operations autonomously.
What is the significance of the 'SFIQ' suffix in W74M25JVSFIQ TR?
The 'SFIQ' suffix in W74M25JVSFIQ TR indicates a RoHS-compliant, lead-free WSON-8 package with 6 mm × 5 mm body size, exposed thermal pad, and industrial temperature rating (–40°C to +85°C). The 'TR' denotes tape-and-reel packaging for automated SMT assembly. This distinguishes it from commercial-grade or alternate-package variants like W74M25JV (no 'SFIQ') or W74M25JW (1.8V).
W74M25JVSFIQ TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Winbond Electronics Corporation
- Series:
- SpiFlash®
- Package/Case:
- 16-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- FLASH
- Technology:
- FLASH - NAND
- Memory Size:
- 256Mbit
- Memory Organization:
- 32M x 8
- Memory Interface:
- SPI - Quad I/O, QPI, DTR
- Clock Frequency:
- 80 MHz
- Write Cycle Time - Word, Page:
- -
- Access Time:
- 6 ns
- Voltage - Supply:
- 2.7V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
W74M25JVSFIQ TR FAQ
1.How can I place an order for W74M25JVSFIQ TR through Aetrix?
Please submit a Request for Quotation (RFQ) for W74M25JVSFIQ TR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for W74M25JVSFIQ TR reliable?
The price and inventory of W74M25JVSFIQ TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for W74M25JVSFIQ TR is usually 5 days.
3.What payment methods are accepted for W74M25JVSFIQ TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for W74M25JVSFIQ TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for W74M25JVSFIQ TR?
W74M25JVSFIQ TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your W74M25JVSFIQ TR order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for W74M25JVSFIQ TR?
For technical support, including W74M25JVSFIQ TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your W74M25JVSFIQ TR requirements.
6.How does Aetrix verify that W74M25JVSFIQ TR is sourced from the original manufacturer or authorized distributors?
All W74M25JVSFIQ TR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that W74M25JVSFIQ TR meets industry standards.
7.What is the process for return or replacement of W74M25JVSFIQ TR?
All W74M25JVSFIQ TR units undergo pre-shipment inspection (PSI). If there is an issue with W74M25JVSFIQ TR, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The W74M25JVSFIQ TR part is unused and in its original packaging.
Return procedure for W74M25JVSFIQ TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
W74M25JVSFIQ TR Tags
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M24C02-WMN6TP
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AT24C02C-XHM-T
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AT21CS01-STUM10-T
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24LC01BT-I/OT
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M24C02-FMC6TG
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AT24CS02-SSHM-T
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93LC46BT-I/OT
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AT24C04C-SSHM-T
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24LC01BT-I/SN
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24AA02UIDT-I/OT
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AT24C08C-STUM-T
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