EN35QYR256A-104WIP(2UC)

The EN35QYR256A-104WIP(2UC) is a 256 M-bit serial flash memory device featuring a SPI-compatible serial interface with Single, Dual and Quad I/O modes. It provides uniform 4 Kbyte sectors, flexible protection options and high-speed read performance for embedded code and data storage.

Designed for industrial temperature operation and compact surface-mount packaging, this device targets systems that need non-volatile, field-updateable memory with secure storage and selective erase/program capability.

Key Features

• Memory Capacity and Organization — 256 M-bit capacity organized as 32M × 8 with 256-byte programmable pages and 131,072 pages total.
• High-Speed Read — Fast Read operation up to 104 MHz for Single/Dual/Quad I/O modes to support high throughput SPI read cycles.
• Flexible SPI Interface — Supports Standard, Dual and Quad SPI (CLK, CS#, DI/DO, DQ₂, DQ₃) with configurable dummy cycles and default Quad Enable set.
• Uniform Sector Architecture — 8,192 uniform 4 Kbyte sectors; also organized into 1,024 × 32-Kbyte blocks and 512 × 64-Kbyte blocks for selective erase and program operations.
• Program / Erase Performance — Typical page program time 0.5 ms; sector erase ~40 ms; half-block ~200 ms; block erase ~300 ms; chip erase ~120 s.
• Power and Supply — Single supply serial flash with full voltage range 2.7–3.6 V and low power consumption (typical active current ~12 mA; typical power-down current ~1 µA).
• Security & Protection — Lockable 3 × 512-byte OTP security sector, software and hardware write protection, Read Unique ID and Replay-Protected Monotonic Counter (RPMC).
• Endurance and Retention — Minimum 100K program/erase cycles per sector and more than 20-year data retention.
• Addressing and Standards — Supports 3-byte and 4-byte address modes and Serial Flash Discoverable Parameters (SFDP) signature.
• Package & Temperature — Industrial temperature range −40 °C to 85 °C; available in 8-contact WSON/VDFN (5 × 6 mm) surface-mount package. RoHS compliant.

Typical Applications

• Embedded Firmware Storage — Store boot code and application firmware with selective sector erase and page program capability for field updates and patches.
• Secure Data & Credentials — Use lockable OTP sectors, Read Unique ID and RPMC for secure counters, immutable data and device identity storage.
• High-Speed Code/Data Execution — Quad I/O and 104 MHz Fast Read support high-throughput read operations for systems that execute code directly from serial flash.

Unique Advantages

• Quad I/O Performance: Native support for Standard, Dual and Quad SPI with default Quad Enable enables higher throughput without complex host changes.
• Selective Erase Architecture: Uniform 4-Kbyte sectors and multiple block sizes let designers erase and update only the required memory regions, reducing wear and downtime.
• Field Update and Reliability: Typical page program and sector erase timings support fast firmware updates while 100K cycle endurance and 20+ year retention provide long-term data integrity.
• Hardware and Software Protection: Multiple protection layers including software write-protect, hardware signals and a lockable OTP sector simplify secure partitioning of code and data.
• Industrial Ready: −40 °C to 85 °C operation and a compact 8-pin WSON package make the device suitable for space-constrained industrial designs.
• Low Power Standby: Very low power-down current supports energy-conscious designs requiring long idle periods with minimal drain.

Why Choose EN35QYR256A-104WIP(2UC)?

The EN35QYR256A-104WIP(2UC) balances high-speed SPI read performance with robust security and flexible memory management for embedded systems. Its 256 M-bit capacity, Quad I/O support at up to 104 MHz, uniform sector architecture and comprehensive protection features make it well suited to industrial applications that require reliable non-volatile code and data storage with field-update capability.

This device is aimed at designers who need a compact, low-power serial flash with proven program/erase endurance, secure storage options and industrial temperature operation—providing long-term value through durability, flexible erase granularity and support for modern SPI modes.

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