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Winbond Electronics Corporation W74M12FVSSIQ TR
- Part No.:
- W74M12FVSSIQ TR
- Manufacturer:
- Winbond Electronics Corporation
- Category:
- Memory
- Package:
- 8-SOIC (0.209", 5.30mm Width)
- Datasheet:
-
W74M12FVSSIQ TR.pdf
- Description:
- IC FLASH 128MBIT SPI/QUAD 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,990
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Product details
Overview
W74M12FVSSIQ TR from Winbond is a 128M-bit (16MB) serial flash memory with integrated HMAC-SHA-256 cryptographic engine, supporting standard/Dual/Quad SPI interfaces up to 104 MHz, 4KB uniform sectors, and secure authentication via four independent 256-bit root keys and monotonic counters - deployed in embedded boot code storage and trusted firmware verification.
For engineers reviewing the W74M12FVSSIQ TR datasheet, W74M12FVSSIQ TR pinout, W74M12FVSSIQ TR application, or W74M12FVSSIQ TR equivalent, key selection considerations include Quad SPI XIP capability, OTP-locked security registers, monotonic counter anti-replay enforcement, and SOIC-208-mil package compatibility with industrial temperature (-40°C to +85°C) and 2.7–3.6V supply operation.
Technical Context
The W74M12FVSSIQ TR implements a dedicated authentication subsystem co-located with main flash array, using separate command set (OP1/OP2) for HMAC-SHA-256 operations - each of its four root key slots binds to an independent 32-bit monotonic counter and volatile HMAC key register. Authentication commands execute independently of standard flash read/erase/program cycles, enabling concurrent secure status checks and data access.
Its SPI interface supports Mode 0 and Mode 3 clocking, with dual/quad I/O enabled via status register configuration; fast read dual/quad instructions achieve effective throughput of 208 MB/s and 416 MB/s respectively, while internal erase suspend/resume and 100,000 program/erase cycles ensure robust field reliability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 128 M-bit (16 MB) - sufficient for full firmware images including bootloader, OS kernel, and secure assets in space-constrained designs. |
| Interface Speed | 104 MHz SPI clock - enables 416 MB/s effective bandwidth in Quad I/O mode, outperforming parallel NOR in pin-limited applications. |
| Security Engine | HMAC-SHA-256 crypto accelerator - performs on-device signature generation/verification without host CPU involvement, reducing attack surface. |
| Root Keys | Four 256-bit OTP root keys - allow secure pairing with up to four distinct hosts (e.g., MCU, SoC, or secure element), each with isolated monotonic counter. |
| Monotonic Counters | Four non-volatile 32-bit counters - increment only on authenticated host request, preventing replay attacks and enabling device lifecycle tracking. |
| Operating Voltage | 2.7 V to 3.6 V - compatible with standard 3.3 V logic rails and brown-out tolerant across industrial voltage ranges. |
| Data Retention | 20+ years - ensures long-term integrity of boot code and cryptographic keys in unpowered storage. |
Pinout & Package
W74M12FVSSIQ TR uses an 8-pin SOIC 208-mil (Package Code SS) with exposed pad not present - footprint matches JEDEC MS-012AC, enabling drop-in replacement in legacy SPI flash layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| /CS | Chip Select Input | Active-low enable; high-impedance output state when deasserted, critical for bus sharing and power-down current control (<1 µA). |
| IO0 | Bidirectional Data I/O (Standard/Dual) | Serves as DI (input) and DO (output) in standard SPI; functions as IO0 in Dual/Quad modes - must be pulled up externally for mode stability. |
| IO1 | Bidirectional Data I/O (Standard/Dual) | DO in standard SPI; IO1 in Dual/Quad - enables full-duplex communication during authentication command sequences. |
| GND | Ground Reference | Primary signal return path; decoupling capacitor placement adjacent to this pin minimizes noise coupling into crypto engine. |
| VCC | Power Supply | 2.7–3.6 V input; internal LDO regulates core voltage - requires 0.1 µF ceramic capacitor placed within 5 mm. |
| CLK | Serial Clock Input | Edge-triggered timing reference; supports Mode 0 (CPOL=0, CPHA=0) and Mode 3 (CPOL=1, CPHA=1) - determines sampling edge for all instructions. |
| IO2 | Bidirectional Data I/O (Quad) | Enabled only in Quad SPI mode; carries address/data bits during fast read quad I/O - unused in standard/dual configurations. |
| IO3 | Bidirectional Data I/O (Quad) | Completes Quad I/O lane; required for 416 MB/s throughput - must be terminated per layout guidelines to prevent signal integrity issues. |
Key Features
| Feature | Design Value |
|---|---|
| Secure Authentication Flow | Hardware-enforced three-step flow: Write Root Key → Update HMAC Key → Increment/Request Counter - prevents unauthorized counter manipulation or key extraction. |
| OTP-Locked Security Registers | Three 256-byte security registers with one-time-programmable locks - store immutable device identity, calibration data, or vendor-specific secrets resistant to firmware overwrite. |
| Dual/Quad SPI XIP Support | Direct execution from flash without RAM copy - reduces BOM cost and boot latency in microcontroller-based systems with limited SRAM. |
| Erase/Program Suspend | Allows interruption of background erase/program to service urgent read requests - essential for real-time systems requiring deterministic response times. |
| Unique 64-bit Serial Number | Factory-programmed per-device ID - enables secure device onboarding, license binding, and anti-cloning in IoT edge nodes. |
Applications
| Trusted Boot Storage | Firmware Integrity Verification |
|---|---|
Use Scenario: Storing boot ROM image and public key certificates in medical infusion pumps where regulatory compliance mandates tamper-evident firmware updates. IC Role / Device Role / Timing Role: Primary non-volatile code storage with hardware-enforced authentication handshake before CPU fetches first instruction. Use Value: Prevents malicious firmware injection by validating HMAC signatures against pre-provisioned root keys before execution begins. |
Use Scenario: Verifying signed firmware updates in automotive telematics units prior to over-the-air installation. IC Role / Device Role / Timing Role: Secure co-processor for cryptographic verification; monotonic counter ensures each update increments version state irreversibly. Use Value: Guarantees update freshness and prevents rollback attacks via hardware-monitored counter tied to HMAC key derivation. |
| Industrial PLC Firmware Vault | IoT Edge Node Identity Anchor |
Use Scenario: Hosting control logic and safety-critical configuration parameters in programmable logic controllers operating in harsh factory environments. IC Role / Device Role / Timing Role: High-reliability flash with 20-year data retention and -40°C to +85°C operation; OTP registers lock safety thresholds. Use Value: Eliminates need for external secure elements by embedding root-of-trust directly in boot memory, reducing component count and failure points. |
Use Scenario: Binding unique device identity to cloud enrollment credentials in smart metering endpoints certified under IEC 62056. IC Role / Device Role / Timing Role: Source of immutable 64-bit UID and cryptographically signed challenge-response tokens during TLS handshake. Use Value: Enables zero-touch provisioning without pre-shared keys, leveraging on-chip HMAC-SHA-256 to prove physical device presence. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar secure serial flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| W25Q128JVSIM TR | No integrated crypto engine; lacks HMAC-SHA-256, monotonic counters, or OTP root key storage - relies on external MCU for authentication. | Suitable for cost-sensitive applications where security is handled at application layer, not hardware level. | Select only if authentication is implemented in host firmware and no hardware root-of-trust is required. |
| ATXP032 | Includes AES-128 encryption but no SHA-256 HMAC or monotonic counter; uses different command set and lacks SFDP register support. | Targeted at encrypted data storage rather than firmware authentication; no native support for secure boot chaining. | Choose when confidentiality (not authenticity/integrity) is primary concern and host does not require counter-based anti-replay. |
Compared with W25Q128JVSIM TR and ATXP032, the W74M12FVSSIQ TR delivers hardware-enforced, key-isolated authentication with monotonic state tracking - eliminating software attack vectors and enabling true hardware-rooted trust without increasing host processing load.
Availability
W74M12FVSSIQ TR is available at Aetrix Electronics and suitable for trusted boot storage, firmware integrity verification, and industrial PLC firmware vault applications requiring stable component supply, long-term lifecycle assurance, and secure supply chain traceability.
Supply support for W74M12FVSSIQ 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 is a Taiwan-based semiconductor company specializing in specialty memory solutions, including SPI flash, mobile DRAM, and code storage devices for embedded and industrial markets.
The W74M product line was designed specifically for systems requiring hardware-enforced firmware authenticity, combining high-speed Quad SPI performance with on-die cryptographic acceleration and monotonic counter protection.
FAQ
What security functions does the W74M12FVSSIQ TR implement in hardware?
The W74M12FVSSIQ TR integrates a dedicated HMAC-SHA-256 cryptographic engine, four OTP-programmable 256-bit root keys, four volatile 256-bit HMAC keys, and four non-volatile 32-bit monotonic counters. It also provides three 256-byte OTP-locked security registers, a 64-bit unique serial number, and hardware-enforced authentication command flow (Write Root Key → Update HMAC Key → Increment/Request Counter). These features operate independently of main flash operations.
Does the W74M12FVSSIQ TR support execute-in-place (XIP) from Quad SPI?
Yes, the W74M12FVSSIQ TR supports XIP from Quad SPI mode using Fast Read Quad Output (06h) and Fast Read Quad I/O (EBh) instructions. With a 104 MHz clock, it achieves up to 416 MB/s effective throughput, enabling direct CPU instruction fetch without RAM buffering - confirmed in Section 1 of the datasheet under "Dual/Quad I/O SPI" and "Highest Performance" features.
What is the purpose of the monotonic counter in the W74M12FVSSIQ TR?
The W74M12FVSSIQ TR includes four independent 32-bit monotonic counters, each bound to a specific root key slot. Once initialized, each counter can only increment (N → N+1) upon successful HMAC-authenticated host request. This prevents replay attacks and enables device lifecycle tracking - e.g., ensuring firmware updates occur in strict sequence without rollback, as defined in Sections 6.1.1–6.1.2 of the datasheet.
Can the W74M12FVSSIQ TR be used in industrial temperature environments?
Yes, the W74M12FVSSIQ TR is rated for -40°C to +85°C operation, with guaranteed performance across this range per its "Operating Ranges" specification (page 19). Its 2.7–3.6 V supply tolerance, low active current (4 mA typ.), and <1 µA power-down current make it suitable for fanless industrial controllers and outdoor IoT gateways requiring extended thermal reliability.
How is the W74M12FVSSIQ TR pinout configured for SOIC-208-mil packaging?
The W74M12FVSSIQ TR in SOIC-208-mil (Package Code SS) has the following pinout: Pin 1 = /CS, Pin 2 = IO1, Pin 3 = IO2, Pin 4 = GND, Pin 5 = IO0, Pin 6 = CLK, Pin 7 = IO3, Pin 8 = VCC. This matches Figure 1a and Table on page 4 of the datasheet, with bidirectional I/O pins supporting standard, dual, and quad SPI modes based on instruction and status register configuration.
W74M12FVSSIQ TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Winbond Electronics Corporation
- Series:
- SpiFlash®
- Package/Case:
- 8-SOIC (0.209", 5.30mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- FLASH
- Technology:
- FLASH - NAND
- Memory Size:
- 128Mbit
- Memory Organization:
- 16M x 8
- Memory Interface:
- SPI - Quad I/O
- Clock Frequency:
- 80 MHz
- Write Cycle Time - Word, Page:
- -
- Access Time:
- -
- Voltage - Supply:
- 2.7V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
W74M12FVSSIQ TR FAQ
1.How can I place an order for W74M12FVSSIQ TR through Aetrix?
Please submit a Request for Quotation (RFQ) for W74M12FVSSIQ 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 W74M12FVSSIQ TR reliable?
The price and inventory of W74M12FVSSIQ TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for W74M12FVSSIQ TR is usually 5 days.
3.What payment methods are accepted for W74M12FVSSIQ TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for W74M12FVSSIQ TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for W74M12FVSSIQ TR?
W74M12FVSSIQ TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your W74M12FVSSIQ 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 W74M12FVSSIQ TR?
For technical support, including W74M12FVSSIQ TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your W74M12FVSSIQ TR requirements.
6.How does Aetrix verify that W74M12FVSSIQ TR is sourced from the original manufacturer or authorized distributors?
All W74M12FVSSIQ 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 W74M12FVSSIQ TR meets industry standards.
7.What is the process for return or replacement of W74M12FVSSIQ TR?
All W74M12FVSSIQ TR units undergo pre-shipment inspection (PSI). If there is an issue with W74M12FVSSIQ 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 W74M12FVSSIQ TR part is unused and in its original packaging.
Return procedure for W74M12FVSSIQ TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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