W74M25JVSFIQ TR

The W74M25JVSFIQ TR is a 256 Mbit non-volatile NAND flash device in a 16-SOIC package, part of Winbond’s W74M Authentication Flash family. It combines standard HMAC-SHA-256 cryptographic acceleration with four monotonic flash counters that are individually HMAC-signed, enabling multi-layer authentication and timestamping for embedded systems.

Designed for secure code and data storage in connected and embedded applications, the device supports SPI Quad I/O, QPI and DTR interfaces and operates across a 2.7 V to 3.6 V supply and a -40°C to 85°C ambient temperature range.

Key Features

• Security Engine (HMAC-SHA-256)  The device includes a standard HMAC-SHA-256 crypto accelerator for message integrity and authentication.
• Monotonic Counters  Four separate monotonic flash counters are provided; each counter value is HMAC-signed by an individual secret key to support authenticated counters and timestamped messages.
• Memory  256 Mbit NAND flash organized as 32M × 8; non-volatile FLASH memory for code and data storage.
• Interfaces  SPI – Quad I/O, QPI, and DTR supported for flexible serial flash connectivity.
• Performance  Up to 80 MHz clock frequency and 6 ns access time for responsive serial flash transactions.
• Power  Operates from a 2.7 V to 3.6 V supply range.
• Package  Standard 16‑SOIC package (0.295", 7.50 mm width) for through-hole or standard SMT board layouts.
• Operating Temperature  Specified for -40°C to 85°C (TA) to cover a broad range of embedded environments.

Typical Applications

• Emerging IoT  Adds multi-layered authentication for connected devices where message integrity and anti-replay measures are important.
• Mobile Accessories  Provides authenticated code/data storage and counter-based anti-cloning capabilities for accessory modules.
• Home Automation & Smart Home  Protects firmware and device identity for connected appliances and sensors.
• Industrial Control  Enables authenticated firmware/version control and secure event timestamping in control modules.

Unique Advantages

• Integrated Cryptographic Acceleration: Built-in HMAC-SHA-256 accelerator enables on-device message authentication without requiring separate cryptographic IP in the host.
• Per-Counter Keying: Four monotonic flash counters are HMAC-signed by individual secret keys, supporting isolated authenticated counters for multiple system elements.
• Replay-Attack Resistance and Timestamping: Counters and HMAC signatures enable timestamped messages with resistance to replay attacks as part of system authentication schemes.
• Flexible Serial Interfaces: SPI Quad I/O, QPI and DTR support offers interface options for a range of embedded host controllers.
• Industry-Standard Voltage and Temperature Range: 2.7 V–3.6 V supply and -40°C to 85°C operating range suit many embedded and industrial environments.
• Compact Standard Package: 16‑SOIC footprint simplifies adoption on existing PCBA layouts that accept standard SOIC devices.

Why Choose W74M25JVSFIQ TR?

The W74M25JVSFIQ TR positions itself as an authentication-focused serial flash device that integrates cryptographic primitives and monotonic counters directly within a 256 Mbit NAND flash product. Its combination of HMAC-SHA-256 acceleration, per-counter signing, and standard SPI/Quad interfaces makes it suitable for embedded designs that require authenticated storage, anti-cloning measures, and timestamped messages.

This device is appropriate for designers of IoT, mobile accessory, home automation, smart home and industrial control products who need on-device authentication features coupled with a standard 16‑SOIC footprint and common supply and temperature ranges.

Request a quote or contact sales to discuss pricing, availability and lead times for the W74M25JVSFIQ TR.