Infineon Technologies S25FL164K0XNFIQ10

Overview

S25FL164K0XNFIQ10 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 (54 MB/s), uniform 4-kB sector and 64-kB block erase, and 100K program-erase cycles. It operates across –40 °C to +105 °C (Industrial Plus), features three 256-byte OTP security registers, 8-byte unique ID, and Execute-In-Place (XIP) capability for embedded code storage in microcontroller boot applications.

For engineers reviewing the S25FL164K0XNFIQ10 datasheet, S25FL164K0XNFIQ10 pinout, S25FL164K0XNFIQ10 application, or S25FL164K0XNFIQ10 equivalent, key selection criteria include quad-mode read throughput, sector protection granularity, deep-power-down current (2 µA), SFDP compliance, and migration path to S25FL064L for new designs.

Technical Context

This device implements a 90 nm floating-gate NOR architecture with SPI Multi-I/O (SIO/DIO/QIO) support, enabling configurable data bus widths using shared IO0–IO3 pins. Command execution follows JEDEC-standard opcodes, with status register bits controlling write protection, volatile/non-volatile configuration, and security lock-down modes.

It supports continuous and wrapped read modes optimized for XIP performance, with variable dummy cycle latency for timing flexibility. Erase suspend/resume and program suspend/resume allow background operation interruption without data loss - critical for real-time firmware updates in industrial controllers.

Key Specifications

Pinout & Package

Package: 8-lead SOIC (208 mil), surface-mount, RoHS-compliant, moisture sensitivity level 3.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar serial NOR flash memory applications.

Compared with S25FL164K0XNFIQ10, the S25FL064L offers higher speed, longer retention, and active manufacturer support, while MX25L6433F provides basic functionality at lower cost but omits security and extended temperature capability - making it unsuitable for industrial or automotive use.

Availability

S25FL164K0XNFIQ10 is available at Aetrix Electronics and suitable for industrial PLC firmware storage, automotive ADAS boot memory, and medical imaging device parameter storage requiring stable component supply despite end-of-life status.

Supply support for S25FL164K0XNFIQ10 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) is a fabless semiconductor company specializing in embedded systems solutions, including microcontrollers, connectivity ICs, and non-volatile memory.

The S25FL1-K family was designed for high-reliability, low-pin-count code storage in resource-constrained embedded systems - targeting industrial automation, automotive, and medical applications where SPI interface simplicity and XIP capability are critical.

FAQ

Is S25FL164K0XNFIQ10 still recommended for new designs?

No. Cypress explicitly states this part is "Not Recommended for New Design" and recommends migrating to the S25FL064L family. The S25FL164K0XNFIQ10 remains available for legacy production and repair, but lacks long-term supply assurance, updated documentation, or technical support for new projects.

What package does S25FL164K0XNFIQ10 use?

S25FL164K0XNFIQ10 uses an 8-lead SOIC package with 208-mil body width (package code SOC008). It is a surface-mount, gull-wing leaded package compliant with JEDEC MS-012, rated for moisture sensitivity level 3, and RoHS-compliant.

Does this device support Quad SPI mode with hardware write protection?

No. When Quad I/O (QIO) mode is enabled, the WP# (IO2) and HOLD# (IO3) pins are repurposed as data lines and hardware write protection is disabled. Hardware protection is only available in Single I/O or Dual I/O modes, where WP# functions as an active-low enable.

Can S25FL164K0XNFIQ10 be used in automotive applications?

Yes - it is qualified to AEC-Q100 Grade 2 (–40 °C to +105 °C) and Grade 3 (–40 °C to +85 °C), making it suitable for under-hood and cabin ADAS modules. However, due to its "Not Recommended for New Design" status, automotive OEMs should evaluate S25FL064L for new platforms requiring long-term qualification support.