W74M12JWSSIQ

The W74M12JWSSIQ is a 128 Mbit serial flash memory device in Winbond Electronics' SpiFlash® family. It is a 1.8V NAND-based non-volatile FLASH memory that supports standard SPI, Dual/Quad I/O SPI and 2-clock QPI operation for high-throughput serial transfers.

Designed for space- and power-constrained embedded systems, the device supports code shadowing and eXecute-In-Place (XIP) via Dual/Quad SPI, and includes on-device secure authentication capabilities for firmware and data integrity use cases.

Key Features

• Memory & Capacity 128 Mbit capacity organized as 16M × 8 bits, providing non-volatile storage for code, firmware and user data.
• Interface & Performance Supports standard SPI, Dual/Quad I/O SPI and 2-clock QPI with an operating SPI clock up to 104 MHz; Dual and Quad modes enable equivalent higher effective transfer rates.
• Security & Authentication Built-in secure authentication functions including root key write, HMAC key update and monotonic counter operations as described in the device instruction set.
• Voltage & Power Single-supply operation from 1.7 V to 1.95 V for low-voltage system designs.
• Temperature Range Industrial operating range from −40°C to 85°C (TA) for deployment across a wide set of embedded environments.
• Package Space-saving 8-pin SOIC (208-mil / 5.30 mm width) package for compact PCB layouts.

Typical Applications

• Embedded Controllers — Non-volatile code and configuration storage where code shadowing or XIP via Dual/Quad SPI is required.
• Connectivity & IoT Devices — Firmware and data storage for devices with tight space and low-voltage power budgets.
• Consumer Electronics — Storage for firmware, user data and media in compact form-factor products.
• Secure Storage — Devices requiring on-chip authentication primitives (root key, HMAC, monotonic counter) for integrity and anti-tamper workflows.

Unique Advantages

• High-speed serial transfers: 104 MHz SPI clock and Dual/Quad I/O support enable higher effective throughput for faster code fetch and data read operations.
• Low-voltage operation: 1.7 V to 1.95 V supply range reduces power and simplifies integration into 1.8 V system rails.
• On-device authentication: Integrated secure authentication instructions (root key, HMAC key, monotonic counter) add a hardware-backed layer for firmware and data protection.
• Compact package: 8-SOIC (208-mil) package minimizes PCB footprint while providing a standard assembly option.
• Wide operating temperature: −40°C to 85°C supports deployment in a broad range of embedded and industrial environments.

Why Choose W74M12JWSSIQ?

The W74M12JWSSIQ combines 128 Mbit NAND-based serial flash density with Dual/Quad SPI and QPI interfaces to support higher-throughput serial execution and data transfers in compact, low-voltage systems. Its on-chip authentication features make it suitable for designs that require firmware integrity and anti-tamper mechanisms.

This device is aimed at engineers building space- and power-constrained embedded products that require reliable non-volatile storage, code shadowing/XIP capability and integrated security primitives, all within a standard 8-pin SOIC package from the Winbond SpiFlash® family.

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