Cypress Semiconductor Corp S25FL164K0XMFV003

Overview

S25FL164K0XMFV003 from Cypress Semiconductor is a 64-Mbit (8 Mbyte), 3.0 V serial NOR flash memory with SPI Multi-I/O interface, supporting Quad Read at 108 MHz and delivering up to 54 MB/s continuous data transfer. It features uniform 4 kB sector and 64 kB block erase, 100K program-erase cycles, and 20-year data retention. Used for XIP code execution and firmware storage in space-constrained embedded systems.

For engineers reviewing the S25FL164K0XMFV003 datasheet, S25FL164K0XMFV003 pinout, S25FL164K0XMFV003 application, or S25FL164K0XMFV003 equivalent, key selection criteria include quad I/O read performance, security register OTP protection, industrial-plus temperature support (−40 °C to +105 °C), and migration path to S25FL064L.

Technical Context

This device implements JEDEC-standard SPI with configurable clock polarity/phase (modes 0 and 3) and supports Serial Flash Discoverable Parameters (SFDP) for automatic configuration. Its 90 nm floating gate architecture enables single-supply operation from 2.6 V to 3.6 V across industrial and automotive temperature grades.

The memory includes three 256-byte one-time-programmable (OTP) security registers, pointer-based block protection, and hardware/software write protection via WP# and status register bits. Erase suspend/resume and program suspend/resume allow background operations without halting host execution.

Key Specifications

Pinout & Package

Package: 8-lead SOIC (208 mil), SOIC-8 (SOC008) - surface-mount, RoHS-compliant, standard footprint for automated assembly.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar SPI flash memory applications.

Compared with S25FL164K0XMFV003, the S25FL064L offers higher speed and active lifecycle support, while MX25L6433F provides lower cost at the expense of integrated security and suspend functionality - critical for safety- or update-critical systems.

Availability

S25FL164K0XMFV003 is available at Aetrix Electronics and suitable for industrial PLC firmware storage, automotive instrument cluster boot memory, and medical diagnostic device parameter storage requiring stable component supply despite end-of-life status.

Supply support for S25FL164K0XMFV003 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Cypress Semiconductor (now part of Infineon Technologies) designs high-performance, low-power semiconductor solutions for embedded systems, IoT, and automotive applications.

The S25FL1-K family was engineered for cost-effective, high-reliability SPI flash in resource-constrained industrial and automotive control systems - emphasizing XIP performance, security, and extended temperature operation.

FAQ

Is S25FL164K0XMFV003 still in production?

No - Cypress discontinued the S25FL1-K family and explicitly states "Not Recommended for New Design." The device remains available through authorized distributors and Aetrix Electronics' legacy inventory, but Infineon recommends migrating to the S25FL064L for new projects due to active support, improved specs, and long-term supply assurance.

What package does S25FL164K0XMFV003 use?

S25FL164K0XMFV003 uses an 8-lead SOIC package with 208-mil body width (SOC008). This is distinct from the 150-mil SOIC used in lower-density variants and differs from WSON or BGA options in the same family - pinout and thermal characteristics are specific to this SOIC-8 variant.

Does it support Execute-in-Place (XIP) reliably?

Yes - the device supports efficient XIP via Continuous Read and Wrapped Read modes, with Quad Read achieving 54 MB/s at 108 MHz. Its low read latency, deterministic timing, and 20-year data retention make it suitable for direct code execution in Cortex-M4/M7 and RISC-V SoCs without requiring RAM shadowing for performance-critical routines.

How does its security model compare to modern alternatives?

It provides three 256-byte OTP registers, hardware WP# pin, status-register-controlled protection, and lock-down until power cycle - robust for its generation. However, it lacks AES encryption, secure boot ROM integration, or dynamic key management found in newer families like S25FL064L or Infineon's Semper Secure line, limiting suitability for high-assurance threat models.