EN25QY256A (2S)

The EN25QY256A (2S) is a 256 Megabit serial SPI NOR Flash memory device designed for industrial-grade embedded systems. It implements a serial interface architecture supporting Standard, Dual and Quad SPI modes and is optimized for code and data storage with sector-level erase and software/hardware write protection.

With high-density storage, uniform 4-Kbyte sectors, and wide operating temperature range, the device targets industrial applications that require non-volatile program or data storage, in-system updates, and robust protection controls.

Key Features

• Memory Density and Organization — 256 Mbit capacity organized as 32M × 8 with 131,072 pages and 256 bytes per programmable page.
• Serial SPI Interface — Supports Standard, Dual and Quad SPI modes (CLK, CS#, DI, DO, WP#, HOLD# and extended DQ lines) for flexible high-speed I/O.
• High-Speed Read — Fast Read operation up to 104 MHz for Single/Dual/Quad I/O and up to 133 MHz for Quad I/O Fast Read.
• Uniform Sector Architecture — 8,192 uniform 4-Kbyte sectors; also organized into 1,024 32-Kbyte blocks and 512 64-Kbyte blocks for granular erase and management.
• Program / Erase Performance — Typical page program time 0.6 ms; sector erase, block erase and chip erase operations supported for flexible maintenance and updates.
• Power and Low-Power Modes — Low active current (typical 8 mA) and low power-down current (typical 2 µA) for energy-conscious designs.
• Write Protection and Security — Software and hardware write-protect features, WP# pin enable/disable, and a lockable 3×512-byte OTP security sector.
• Addressing and Identification — Supports 3-byte and 4-byte address modes and provides Read Unique ID Number and SFDP signature support.
• Reliability and Retention — Minimum 100K program/erase cycles per sector and data retention of 20 years.
• Industrial Temperature Range — Rated for operation from −40°C to 105°C.
• Package and Mounting — Available in 8-pin SOP (200 mil) package suitable for surface-mount assembly.

Typical Applications

• Embedded Firmware Storage — Non-volatile storage for boot code and firmware with sector-level erase and program capabilities.
• Field-Upgradable Systems — Supports in-system updates and partial memory protection to allow secure code patching and module updates.
• Industrial Control and Instrumentation — Wide temperature range and low-power modes suited to industrial environments requiring reliable non-volatile storage.

Unique Advantages

• Flexible SPI Modes: Standard, Dual and Quad SPI support with up to 133 MHz Quad Fast Read enables higher throughput for code and data access.
• Granular Memory Management: Uniform 4-Kbyte sectors and multiple block sizes allow precise erase/program operations and efficient use of storage.
• Robust Protection Features: Combined software and hardware write protection plus a lockable OTP sector help safeguard critical code and configuration data.
• Industrial Reliability: Rated for −40°C to 105°C, with minimum 100K program/erase cycles and 20-year data retention for long-term deployments.
• Low Power Footprint: Typical active and power-down currents support energy-sensitive designs while maintaining performance.
• Packaged for Surface Mount Assembly: 8-pin SOP (200 mil) package simplifies PCB layout and assembly for compact systems.

Why Choose EN25QY256A (2S)?

The EN25QY256A (2S) combines 256 Mbit density with versatile SPI I/O modes, sector-level management, and comprehensive protection features, making it well suited for industrial embedded designs that require reliable non-volatile storage. Its documented endurance and retention figures, plus wide operating temperature range, provide predictable long-term behavior for deployed systems.

This device is appropriate for engineers and procurement teams specifying storage for firmware, configuration, or data logging in industrial applications where controlled program/erase operations and hardware/software protection are important.

Request a quote or contact sales to evaluate EN25QY256A (2S) for your next embedded or industrial storage design.