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Home > Products > Integrated Circuits (ICs) > Memory > Memory

Winbond Electronics Corporation W74M12FVSSIQ

Name: W74M12FVSSIQ
Brand: Winbond Electronics Corporation
SKU: W74M12FVSSIQ
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: W74M12FVSSIQ

Manufacturer:: Winbond Electronics Corporation

Category:: Memory

Package:: 8-SOIC (0.209", 5.30mm Width)

Datasheet:: W74M12FVSSIQ.pdf

Description:: IC FLASH 128MBIT SPI/QUAD 8SOIC

Quantity:: RFQ Add To RFQ list

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Inventory:1,730

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Product details

Overview

W74M12FVSSIQ from Winbond is a 128M-bit (16MB) serial flash memory with integrated HMAC-SHA-256 cryptographic engine, supporting standard/Dual/Quad SPI up to 104 MHz, operating from 2.7–3.6 V, and featuring four non-volatile 256-bit Root Keys, four volatile 256-bit HMAC Keys, and four 32-bit monotonic counters for secure device authentication in embedded boot and firmware storage applications.

For engineers reviewing the W74M12FVSSIQ datasheet, W74M12FVSSIQ pinout, W74M12FVSSIQ application, or W74M12FVSSIQ equivalent, key selection considerations include Quad SPI XIP capability, hardware-enforced monotonic counter anti-replay protection, OTP-locked security registers, SFDP compliance, and SOIC-208-mil (SS) package compatibility with legacy PCB footprints.

Technical Context

The W74M12FVSSIQ implements a dedicated authentication command set (OP1/OP2) using standard SPI framing, with all crypto operations-HMAC-SHA-256 signing, root key initialization, and monotonic counter increment-executed internally by a hardened cryptographic engine. The device maintains separate volatile HMAC Key registers and non-volatile Root Key/counter storage, each tied to an 8-bit Counter_Address for multi-host pairing.

Authentication flow requires explicit host-initiated steps: Write Root Key Register (9Bh+00h) for one-time provisioning, Update HMAC Key (9Bh+01h) on every power-up, then Increment or Request Monotonic Counter (9Bh+02h/03h) with HMAC-signed payloads. All authentication commands are independent of main flash read/write operations and do not suspend ongoing erase/program cycles.

Key Specifications

Parameter	Value and Actual Design Meaning
Memory Density	128 M-bit (16 MB) uniform sector architecture with 4 KB sectors, enabling fine-grained firmware partitioning and OTA update safety.
SPI Interface Modes	Standard (DI/DO), Dual (IO0/IO1), and Quad (IO0–IO3) SPI with 104 MHz clock; supports 416 MHz effective throughput via Quad I/O Fast Read for boot-time code execution.
Security Engine	Integrated HMAC-SHA-256 accelerator with four independent 256-bit OTP Root Keys and four volatile 256-bit HMAC Keys-enables secure pairing with up to four distinct hosts.
Monotonic Counters	Four non-volatile 32-bit counters, each bound to a Root Key; incremented only after HMAC-verified request, preventing replay and cloning attacks.
Unique Identity	64-bit factory-programmed unique serial number and SFDP register compliant with JESD216B-enables automated BOM traceability and secure provisioning workflows.
Endurance & Retention	100,000 program/erase cycles per sector and >20-year data retention at +85°C-validated for industrial-grade firmware storage in unattended systems.
Power Profile	4 mA active current at 104 MHz; <1 µA deep power-down current-suitable for battery-backed or energy-constrained edge nodes.

Pinout & Package

W74M12FVSSIQ is packaged in an 8-pin SOIC 208-mil (Package Code SS), pin-compatible with legacy SPI flash devices and optimized for reflow-soldered industrial PCBs.

Pin/Terminal	Circuit Role	Design Meaning
/CS	Chip Select Input	Active-low enable; must transition high→low after power-up before any instruction; controls output tri-state and power mode selection.
IO0	Bidirectional Data I/O (Standard/Dual)	Serves as DI (input) in Standard SPI, DO (output) in read mode, and bidirectional data lane in Dual/Quad modes.
IO1	Bidirectional Data I/O (Standard/Dual)	Functions as DO in Standard SPI reads; enables dual-lane transfers at 208 MHz equivalent when used with IO0.
IO2	Bidirectional Data I/O (Quad)	Active only in Quad SPI mode; extends interface bandwidth to 416 MHz equivalent with IO0–IO3.
IO3	Bidirectional Data I/O (Quad)	Completes Quad SPI lane set; required for Fast Read Quad I/O and authentication command transmission.
CLK	Serial Clock Input	Edge-triggered timing reference; rising edge for input sampling, falling edge for output valid; supports up to 104 MHz.
VCC	Power Supply	Single 2.7–3.6 V supply; internal regulation ensures stable core voltage across industrial temperature range.
GND	Ground Reference	Digital ground return; decoupling capacitor placement near this pin is critical for signal integrity at 104 MHz.

Key Features

Feature	Design Value
Secure Authentication Flow	Hardware-enforced three-step process (Root Key write → HMAC Key update → monotonic counter increment/request) prevents unauthorized access without exposing keys.
Multi-Host Pairing Support	Four independent Root Key/HMAC Key/monotonic counter sets allow single W74M12FVSSIQ to authenticate with up to four different host controllers-ideal for modular system designs.
Anti-Replay Protection	Monotonic counters increment only upon verified HMAC-signed requests; mismatched counter values or repeated signatures trigger authentication failure in Status Register bit 6.
OTP-Locked Security Registers	Three 256-byte security registers with one-time-programmable (OTP) locks prevent runtime modification of critical provisioning data post-manufacturing.
Quad SPI eXecute-In-Place (XIP)	Enables direct CPU execution from flash memory via Quad I/O Fast Read, eliminating RAM copy overhead and reducing boot latency in resource-constrained MCUs.

Applications

Secure Boot Storage	Firmware Over-the-Air (OTA)
Use Scenario: Storing signed bootloader images and public key certificates in industrial gateways requiring tamper-resistant startup verification. IC Role / Device Role / Timing Role: Primary non-volatile storage for authenticated boot assets; provides HMAC-SHA-256 signature validation and monotonic counter enforcement during power-on reset sequence. Use Value: Prevents execution of malicious or outdated firmware by binding boot integrity to hardware-rooted keys and ever-increasing counters-no software-only bypass possible.	Use Scenario: Hosting field-upgradable firmware partitions in medical IoT sensors where remote updates must resist man-in-the-middle tampering. IC Role / Device Role / Timing Role: Secure firmware repository with atomic sector erase; uses Quad SPI for fast download and authentication engine to verify update signatures pre-commit. Use Value: Enables zero-trust update validation: each new firmware image must be HMAC-signed with a fresh monotonic counter value, blocking replay of prior updates.
Trusted Module Identity	Hardware Root of Trust Anchor
Use Scenario: Embedding in smart meter modules to uniquely identify and authenticate each unit during utility network enrollment. IC Role / Device Role / Timing Role: Source of immutable 64-bit UID and cryptographically verifiable identity; responds to host-challenge with HMAC-signed counter values. Use Value: Eliminates clone meters by tying network registration to hardware-bound secrets-counter values increase with each successful authentication, invalidating reused credentials.	Use Scenario: Serving as foundational RoT in automotive telematics control units where secure boot chain starts from flash-resident keys. IC Role / Device Role / Timing Role: First-stage RoT element storing OEM-provisioned Root Keys; initializes HMAC context for subsequent secure boot stages via SPI-connected MCU. Use Value: Offloads cryptographic key management from host processor, reducing attack surface and ensuring key secrecy even if host firmware is compromised.

Secure Boot Storage

Firmware Over-the-Air (OTA)

Use Scenario: Storing signed bootloader images and public key certificates in industrial gateways requiring tamper-resistant startup verification.

IC Role / Device Role / Timing Role: Primary non-volatile storage for authenticated boot assets; provides HMAC-SHA-256 signature validation and monotonic counter enforcement during power-on reset sequence.

Use Value: Prevents execution of malicious or outdated firmware by binding boot integrity to hardware-rooted keys and ever-increasing counters-no software-only bypass possible.

Use Scenario: Hosting field-upgradable firmware partitions in medical IoT sensors where remote updates must resist man-in-the-middle tampering.

IC Role / Device Role / Timing Role: Secure firmware repository with atomic sector erase; uses Quad SPI for fast download and authentication engine to verify update signatures pre-commit.

Use Value: Enables zero-trust update validation: each new firmware image must be HMAC-signed with a fresh monotonic counter value, blocking replay of prior updates.

Trusted Module Identity

Hardware Root of Trust Anchor

Use Scenario: Embedding in smart meter modules to uniquely identify and authenticate each unit during utility network enrollment.

IC Role / Device Role / Timing Role: Source of immutable 64-bit UID and cryptographically verifiable identity; responds to host-challenge with HMAC-signed counter values.

Use Value: Eliminates clone meters by tying network registration to hardware-bound secrets-counter values increase with each successful authentication, invalidating reused credentials.

Use Scenario: Serving as foundational RoT in automotive telematics control units where secure boot chain starts from flash-resident keys.

IC Role / Device Role / Timing Role: First-stage RoT element storing OEM-provisioned Root Keys; initializes HMAC context for subsequent secure boot stages via SPI-connected MCU.

Use Value: Offloads cryptographic key management from host processor, reducing attack surface and ensuring key secrecy even if host firmware is compromised.

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
Winbond W74M12FVZPIQ	Same die, but in 8-pad WSON 6×5 mm (ZP) package-0.5 mm pitch, no leads, lower profile.	Preferred for space-constrained portable electronics; requires rework of solder stencil and thermal profile vs. SOIC.	Select W74M12FVZPIQ only when board area or height budget prohibits SOIC; identical electrical and security behavior.
Macronix MX25L12835FMI-10G	No integrated HMAC engine or monotonic counters; supports standard/Quad SPI only; relies on external MCU for authentication logic.	Suitable for cost-sensitive designs where host MCU handles crypto; lacks hardware-enforced anti-replay and key isolation.	Choose MX25L12835FMI-10G only if authentication is implemented in software and long-term key secrecy is not required.

Compared with W74M12FVZPIQ, W74M12FVSSIQ offers identical security functionality but in a through-hole-compatible SOIC package-simplifying legacy design migration. Against MX25L12835FMI-10G, W74M12FVSSIQ delivers hardware-rooted trust with no host CPU overhead, making it essential for systems where firmware integrity must survive host compromise.

Availability

W74M12FVSSIQ is available at Aetrix Electronics and suitable for industrial control systems, medical IoT endpoints, and automotive telematics modules requiring stable component supply, long-life support, and guaranteed authenticity assurance.

Supply support for W74M12FVSSIQ 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 manufacturer specializing in specialty DRAM, mobile DRAM, and serial flash memory solutions for industrial, automotive, and consumer markets.

The W74M product line was designed specifically to embed hardware-accelerated cryptographic authentication into serial flash-addressing growing demand for secure boot, firmware IP protection, and device identity in connected edge systems.

FAQ

What security functions does the W74M12FVSSIQ integrate beyond standard serial flash?

The W74M12FVSSIQ integrates a dedicated HMAC-SHA-256 cryptographic engine, four non-volatile 256-bit Root Keys, four volatile 256-bit HMAC Keys, and four 32-bit monotonic counters-all accessible via authenticated SPI commands. Unlike standard flash, it enforces hardware-rooted device identity, prevents replay attacks via counter monotonicity, and isolates keys per host pairing-without relying on external processors.

Does the W74M12FVSSIQ support execute-in-place (XIP) from Quad SPI?

Yes, the W74M12FVSSIQ supports Quad SPI Fast Read instructions enabling true XIP operation. With a 104 MHz clock and 4-bit data bus, it achieves up to 416 MHz effective throughput-sufficient for direct CPU execution of boot code and real-time firmware in Cortex-M and RISC-V microcontrollers without RAM buffering.

How is the monotonic counter protected against rollback or glitch attacks?

The W74M12FVSSIQ monotonic counter increments only upon receipt of an HMAC-SHA-256-signed command (9Bh+02h) containing the current counter value. The device validates both the signature and exact counter match before incrementing. Power-glitch resilience is built into the counter logic, and status register bit 5 flags "Monotonic_Counter_Data Mismatch" on verification failure.

Can the W74M12FVSSIQ be used alongside standard SPI flash controllers?

Yes-the W74M12FVSSIQ is fully backward-compatible with standard SPI controllers for basic read/write/erase operations. Its authentication features use extended opcodes (e.g., 9Bh, 96h) that are ignored by legacy controllers, allowing gradual integration into existing designs without hardware changes.

What package options exist for the W74M12FVSSIQ, and is pinout identical across variants?

W74M12FVSSIQ uses the 8-pin SOIC 208-mil (SS) package. Winbond also offers the same die in WSON 6×5 mm (ZP) as W74M12FVZPIQ. Both share identical pin numbering and function mapping (/CS, IO0–IO3, CLK, VCC, GND), but ZP uses pad layout instead of gull-wing leads-requiring different PCB footprint and assembly process.

W74M12FVSSIQ Specifications

Product attributes: Attribute value

Manufacturer:: Winbond Electronics Corporation

Series:: SpiFlash®

Package/Case:: 8-SOIC (0.209", 5.30mm Width)

Packaging:: Tube

Product Status:: Obsolete

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 FAQ

1.How can I place an order for W74M12FVSSIQ through Aetrix?

Please submit a Request for Quotation (RFQ) for W74M12FVSSIQ 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 reliable?

The price and inventory of W74M12FVSSIQ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for W74M12FVSSIQ is usually 5 days.

3.What payment methods are accepted for W74M12FVSSIQ?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for W74M12FVSSIQ transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for W74M12FVSSIQ?

W74M12FVSSIQ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your W74M12FVSSIQ 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?

For technical support, including W74M12FVSSIQ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your W74M12FVSSIQ requirements.

6.How does Aetrix verify that W74M12FVSSIQ is sourced from the original manufacturer or authorized distributors?

All W74M12FVSSIQ 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 meets industry standards.

7.What is the process for return or replacement of W74M12FVSSIQ?

All W74M12FVSSIQ units undergo pre-shipment inspection (PSI). If there is an issue with W74M12FVSSIQ, 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 part is unused and in its original packaging.

Return procedure for W74M12FVSSIQ:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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