EN35SXR512A-133WIP(2PC)

The EN35SXR512A-133WIP(2PC) from ESMT is a 512 Mbit serial SPI NOR Flash memory device designed for industrial embedded storage and code-boot applications. It implements a serial SPI architecture with Standard, Dual and Quad I/O, delivering high throughput with Quad I/O Fast Read up to 133 MHz and robust sector-level management.

With uniform 4-Kbyte sectors, hardware and software write protection, and security primitives such as a lockable 3×512-byte OTP and a Replay-Protected Monotonic Counter, this device targets firmware storage, secure data segments and industrial systems requiring durable non-volatile storage across a wide temperature range.

Key Features

• Density & Organization — 512 Mbit capacity organized as 64M × 8, providing 65,536 KByte total memory and 262,144 programmable pages (256 bytes per page).
• Serial SPI Interface — SPI compatible (Mode 0 and Mode 3) supporting Standard, Dual and Quad SPI modes with default Quad Enable set.
• High-Speed Read Performance — Quad I/O Fast Read up to 133 MHz; Single/Dual/Quad Fast Read at up to 104 MHz for flexible performance scaling.
• Program & Erase Times — Typical page program time 0.5 ms (500 µs); sector erase ~40 ms typical; block and chip erase timings specified for system planning.
• Power — Low-power operation with typical active current ~24 mA and typical power-down current ~2 µA; single power-supply operation with full voltage range and regulated ranges defined in the datasheet.
• Sector Architecture & Protection — Uniform 4-Kbyte sectors (16,384 total); software and WP# hardware write protection with sector/block erase granularity.
• Security & Reliability — Lockable 3×512-byte OTP, Read Unique ID Number, Replay-Protected Monotonic Counter (RPMC), minimum 100K program/erase endurance cycles and 20-year data retention.
• Package & Temperature — Surface-mount 8-pin WSON (5×6 mm) option; industrial operating temperature range −40 °C to 85 °C.
• Standards & Discovery — Supports Serial Flash Discoverable Parameters (SFDP) signature for interoperable device discovery.
• Compliance — Pb-free packages compliant with RoHS and environmental requirements specified in the datasheet.

Typical Applications

• Industrial Control & Automation — Firmware storage and in-field code updates with sector-level protection and industrial temperature performance.
• Embedded Systems & Boot ROM — High-density non-volatile storage for boot code and application firmware leveraging Quad I/O read for faster boot times.
• Secure Data Storage — Use of lockable OTP, Unique ID and RPMC for secure counters, device identity and protected data segments.
• Network & Communication Equipment — Storage of firmware images and configuration data with flexible erase/program granularity and endurance suitable for periodic updates.

Unique Advantages

• High-density storage in a compact package: 512 Mbit capacity in an 8-pin WSON (5×6 mm) surface-mount package reduces board area while meeting large-code requirements.
• High-throughput Quad I/O: Quad I/O Fast Read at 133 MHz enables faster code fetch and reduced system boot latency when compared to single-bit SPI reads.
• Granular protection and flexible erase: Uniform 4-Kbyte sectors and software/hardware write-protect mechanisms allow selective updates and safe in-field code patching.
• Designed for long-term reliability: Specified 100K program/erase endurance and 20-year data retention support lifecycle requirements for industrial products.
• Low-power modes for embedded systems: Typical active and power-down currents allow designers to manage power budgets across operating and standby states.
• Security primitives included: Lockable OTP, Unique ID and RPMC support secure storage and device identity management without added components.

Why Choose EN35SXR512A-133WIP(2PC)?

The EN35SXR512A-133WIP(2PC) positions itself as a high-capacity, secure and industrial-grade serial flash option for embedded designers who need reliable non-volatile storage with flexible protection and fast Quad I/O read performance. Its combination of 512 Mbit density, sector-level erase and protection, security features and industrial temperature rating makes it suitable for firmware storage, secure data segments and equipment that require durability over long product lifecycles.

Engineers and procurement teams looking for a compact WSON surface-mount package with documented endurance, retention and erase/program timings will find this device appropriate for applications where space, reliability and controlled update mechanisms are important.

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