W74M25JWZEIQ

The W74M25JWZEIQ is a 256 Mbit NAND non-volatile flash memory device in Winbond’s W74M Authentication Flash family. It combines standard NAND flash memory organization with on-chip authentication features to protect code and data integrity.

Designed for security-focused embedded applications, the device integrates a hardware HMAC-SHA-256 crypto accelerator and four monotonic flash counters, enabling multi-layer authentication for markets such as IoT, mobile accessories, home automation and industrial control.

Key Features

• Memory 256 Mbit flash organized as 32M × 8 for code and data storage in a NAND flash format.
• Security Includes a standard HMAC-SHA-256 crypto accelerator plus four separate monotonic flash counters that are HMAC-signed by individual secret keys to verify integrity and authenticity of counter values.
• Anti-replay/timestamping Monotonic counters can be used to add timestamps to messages and provide resistance to replay attacks.
• Performance Clock frequency specified at 104 MHz.
• Power Supply Operates from a 1.7 V to 1.95 V supply range for low-voltage system compatibility.
• Package Available in an 8-WDFN exposed pad package (WSON 8 × 6 mm) suitable for compact PCB layouts.
• Operating Temperature Specified for −40 °C to 85 °C operation.

Typical Applications

• Emerging IoT Secure authentication for devices that require multi-layered authenticity and anti-tamper protection.
• Mobile Accessories Protect firmware and validate device authenticity in accessory modules and peripherals.
• Home Automation & Smart Home Secure storage and authenticated updates for sensors, controllers and connected modules.
• Industrial Control Integrity verification and anti-cloning for control modules and industrial endpoints operating across −40 °C to 85 °C.
• PCBA Anti-copy / IP Protection Use monotonic counters and HMAC signing to prevent cloning and protect software IP and system configuration.

Unique Advantages

• Integrated crypto accelerator: On-chip HMAC-SHA-256 crypto reduces the need for external authentication hardware by enabling on-device signing and verification.
• Hardware monotonic counters: Four separate monotonic flash counters signed with individual secret keys provide tamper-resistant sequence tracking and timestamping to resist replay attacks.
• Low-voltage operation: 1.7 V to 1.95 V supply range allows integration into low-voltage systems and mobile designs.
• Compact, thermally aided package: 8-WDFN exposed pad (WSON 8 × 6 mm) supports compact PCB designs while providing a thermal pad for heat dissipation.
• Broad temperature range: Specified for −40 °C to 85 °C to cover a wide range of embedded and industrial environments.
• Proven manufacturing backing: Part of Winbond’s W74M family, supported by the vendor’s in-house wafer fabrication capabilities.

Why Choose W74M25JWZEIQ?

The W74M25JWZEIQ positions itself as a secure NAND flash option for embedded designs that require on-chip authentication and anti-cloning measures. With 256 Mbit capacity, a 104 MHz clock rate, integrated HMAC-SHA-256 crypto, and four monotonic, HMAC-signed counters, it targets designs where data authenticity and firmware protection are priorities.

This device is suited for engineers developing IoT endpoints, accessory modules, home automation products and industrial controllers that need compact packaging, low-voltage operation and a verified mechanism for integrity and anti-replay protection. Its inclusion in Winbond’s W74M Authentication Flash family is supported by the vendor’s manufacturing resources and product portfolio.

Request a quote or submit an inquiry for pricing, availability and lead time for the W74M25JWZEIQ authentication flash device.