Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

Home > Products > Integrated Circuits (ICs) > Memory > Memory

Cypress Semiconductor Corp S25FL164K0XMFI003

Name: S25FL164K0XMFI003
Brand: Cypress Semiconductor Corp
SKU: S25FL164K0XMFI003
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: S25FL164K0XMFI003

Manufacturer:: Cypress Semiconductor Corp

Category:: Memory

Package:: 16-SOIC (0.295", 7.50mm Width)

Datasheet:: S25FL164K0XMFI003.pdf

Description:: IC FLASH 64MBIT SPI/QUAD 16SOIC

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:24,650

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

S25FL164K0XMFI003 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 Execute-In-Place (XIP) capability for embedded code storage in industrial and automotive systems.

For engineers reviewing the S25FL164K0XMFI003 datasheet, S25FL164K0XMFI003 pinout, S25FL164K0XMFI003 application, or S25FL164K0XMFI003 equivalent, key selection considerations include quad-mode timing compliance, OTP security register usage, AEC-Q100 Grade 2 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), supports Serial Flash Discoverable Parameters (SFDP), and enables hardware write protection via WP# and suspend/resume control via HOLD#. It uses 90 nm floating gate technology and operates across 2.6 V–3.6 V supply range.

The memory array is organized into 128 uniform 64 kB blocks (8,192 × 4 kB sectors), with three 256-byte one-time-programmable (OTP) security registers, 8-byte unique ID, and non-volatile/volatile configuration options for status register bits controlling protection modes.

Key Specifications

Parameter	Value and Actual Design Meaning
Memory Density	64 Mbit (8 Mbyte) - sufficient for boot code, firmware images, and parameter storage in resource-constrained microcontroller systems.
Interface	SPI Multi-I/O (SIO/DIO/QIO) - reduces pin count vs parallel NOR while enabling up to 54 MB/s read throughput in quad mode.
Max Clock Rate	108 MHz (–40°C to +105°C) - enables high-speed XIP execution without external cache bottlenecks.
Erase Granularity	Uniform 4 kB sectors and 64 kB blocks - allows fine-grained firmware updates without disturbing adjacent functional sections.
Endurance & Retention	100K program-erase cycles / 20-year data retention - meets long-life requirements for industrial controllers and automotive ECUs.
Supply Voltage	2.6 V to 3.6 V - compatible with 3.3 V logic rails and tolerant of brown-out conditions down to 2.6 V.
Temperature Range	AEC-Q100 Grade 2 (–40°C to +105°C) - qualified for under-hood automotive applications requiring extended thermal operation.

Pinout & Package

Package: 8-lead SOIC (208 mil), SOIC-8 (SOC008) - surface-mount, industry-standard footprint with 1.27 mm pitch, suitable for automated assembly and thermal cycling reliability.

Pin/Terminal	Circuit Role	Design Meaning
CS#	Chip Select Input	Active-low enable signal; must be asserted before command initiation and held low during full transaction.
SCK	Serial Clock Input	Provides timing reference for all SPI transfers; supports modes 0 and 3 (CPOL/CPHA).
IO0 (SI)	Serial Data Input / I/O	Primary data input in SIO mode; bidirectional in DIO/QIO modes for multi-bit reads/writes.
IO1 (SO)	Serial Data Output / I/O	Primary data output in SIO mode; bidirectional in DIO/QIO modes; used for dual/quad read data lanes.
IO2 (WP#)	Write Protect Input / I/O	Hardware-level protection enable; when low, locks status register and memory array against accidental writes/erases.
IO3 (HOLD#)	Hold Input / I/O	Pauses ongoing command execution mid-cycle; resumes on deassertion - critical for real-time interrupt handling.
VCC	Power Supply	Single 2.6–3.6 V supply; powers core logic and I/O buffers; decoupling required per datasheet layout guidelines.
VSS	Ground	Signal and power return path; requires low-inductance connection to minimize noise coupling during high-speed reads.

Key Features

Feature	Design Value
Quad Read Mode	54 MB/s continuous throughput at 108 MHz - eliminates bandwidth bottleneck for XIP in ARM Cortex-M7/M33-based designs.
Program/Erase Suspend	Enables background erase interruption and resume - allows time-critical host tasks to preempt flash operations without data loss.
Three 256-byte OTP Registers	Immutable storage for keys, calibration data, or device-specific identifiers - prevents tampering post-manufacture.
Block Protection Range	Configurable top/bottom protection from 4 kB to full array - supports secure bootloader partitioning and field-upgrade isolation.
Unique 8-Byte ID	Factory-programmed per-device identifier - enables traceability, anti-cloning, and secure provisioning in production lines.

Applications

Automotive ECU Boot Memory

Industrial PLC Firmware Storage

Use Scenario: Stores boot loader and safety-critical firmware in engine control units requiring AEC-Q100 Grade 2 qualification.

IC Role / Device Role / Timing Role: Non-volatile code storage with XIP support and hardware write protection to prevent runtime corruption.

Use Value: Enables deterministic boot within <50 ms using Quad Read, while OTP registers store cryptographic keys for secure boot verification.

Use Scenario: Holds reprogrammable ladder logic and configuration data in programmable logic controllers operating in harsh factory environments.

IC Role / Device Role / Timing Role: Field-upgradable firmware repository with 4 kB sector erase granularity for partial updates without system downtime.

Use Value: 100K endurance and 20-year retention ensure >15-year service life in unattended deployments with infrequent firmware changes.

Medical Device Parameter Archive

Smart Meter Calibration Storage

Use Scenario: Retains patient calibration profiles and audit logs in portable diagnostic equipment with strict data integrity requirements.

IC Role / Device Role / Timing Role: Secure, tamper-resistant non-volatile memory with OTP-protected registers for regulatory compliance (IEC 62304).

Use Value: Three independent 256-byte OTP zones allow separation of manufacturer, service technician, and end-user configuration data.

Use Scenario: Stores metrology calibration constants and tariff tables in ANSI C12.22-compliant smart electricity meters deployed outdoors.

IC Role / Device Role / Timing Role: Temperature-stable memory with –40°C to +105°C operation and deep-power-down current (2 µA) for battery backup.

Use Value: Low standby current extends 10-year lithium battery life; sector protection prevents unauthorized tariff modification.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
S25FL064L0XMFI001	Successor generation; 64 Mbit, 133 MHz Quad Read (66.5 MB/s), 65 nm process, enhanced SFDP v1.6 support.	Requires updated initialization sequence and supports deeper power-down states; not pin-compatible with SOIC-8 (uses WSON-8).	Select for new designs requiring higher speed, lower power, and future-proof SFDP compatibility.
MX25L6433FZNI-10G	64 Mbit, 104 MHz Quad Read (52 MB/s), 1.8 V/3.3 V dual supply, no OTP security registers.	Lacks hardware-based security features; supports only standard JEDEC ID, no unique device ID or pointer-based protection.	Choose where cost sensitivity outweighs security needs and AEC-Q100 qualification is not required.

Compared with S25FL164K0XMFI003, S25FL064L offers higher performance and modern SFDP but requires PCB redesign, while MX25L6433F provides cost-effective capacity at the expense of automotive qualification and integrated security.

Availability

S25FL164K0XMFI003 is available at Aetrix Electronics and suitable for automotive ECU boot memory, industrial PLC firmware storage, and medical device parameter archive applications requiring stable component supply despite end-of-life status.

Supply support for S25FL164K0XMFI003 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, and non-volatile memory products.

The S25FL1-K family was designed for high-reliability code storage in automotive and industrial systems, emphasizing AEC-Q100 qualification, robust security features, and SPI Multi-I/O performance scalability.

FAQ

Is S25FL164K0XMFI003 still recommended for new designs?

No. Cypress explicitly designates this part as "Not Recommended for New Design" and recommends migration to S25FL064L. It remains available for legacy production and repair, with full technical documentation and known lifetime supply channels through authorized distributors.

What package does S25FL164K0XMFI003 use?

S25FL164K0XMFI003 uses an 8-lead SOIC package with 208-mil body width (SOC008). This is distinct from the 150-mil SOIC used by S25FL116K and differs from WSON or BGA variants offered in the same family.

Does it support AEC-Q100 qualification?

Yes. S25FL164K0XMFI003 is qualified to AEC-Q100 Grade 2 (–40°C to +105°C) and Grade 3 (–40°C to +85°C), making it suitable for automotive under-hood and cabin applications where extended temperature operation is required.

How many security registers does it have, and what are their functions?

It includes three 256-byte One-Time-Programmable (OTP) security registers. These store immutable data such as cryptographic keys, calibration coefficients, or device-specific identifiers, and are protected by lock-down until power cycle and software/hardware write protection mechanisms.

S25FL164K0XMFI003 Specifications

Product attributes: Attribute value

Manufacturer:: Cypress Semiconductor Corp

Series:: FL1-K

Package/Case:: 16-SOIC (0.295", 7.50mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Programmable:: Not Verified

Memory Type:: Non-Volatile

Memory Format:: FLASH

Technology:: FLASH - NOR

Memory Size:: 64Mbit

Memory Organization:: 8M x 8

Memory Interface:: SPI - Quad I/O

Clock Frequency:: 108 MHz

Write Cycle Time - Word, Page:: 3ms

Access Time:: -

Voltage - Supply:: 2.7V ~ 3.6V

Operating Temperature:: -40°C ~ 85°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 16-SOIC

S25FL164K0XMFI003 FAQ

1.How can I place an order for S25FL164K0XMFI003 through Aetrix?

Please submit a Request for Quotation (RFQ) for S25FL164K0XMFI003 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for S25FL164K0XMFI003 reliable?

The price and inventory of S25FL164K0XMFI003 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S25FL164K0XMFI003 is usually 5 days.

3.What payment methods are accepted for S25FL164K0XMFI003?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S25FL164K0XMFI003 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for S25FL164K0XMFI003?

S25FL164K0XMFI003 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your S25FL164K0XMFI003 order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for S25FL164K0XMFI003?

For technical support, including S25FL164K0XMFI003 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S25FL164K0XMFI003 requirements.

6.How does Aetrix verify that S25FL164K0XMFI003 is sourced from the original manufacturer or authorized distributors?

All S25FL164K0XMFI003 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that S25FL164K0XMFI003 meets industry standards.

7.What is the process for return or replacement of S25FL164K0XMFI003?

All S25FL164K0XMFI003 units undergo pre-shipment inspection (PSI). If there is an issue with S25FL164K0XMFI003, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The S25FL164K0XMFI003 part is unused and in its original packaging.

Return procedure for S25FL164K0XMFI003:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

Tech Hub

2026-07-27 Hall Effect Sensor: Working Principle, Types, Circuits and Applications

Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…

2026-07-20 Product Change Notification (PCN) in Electronic Components: Meaning and Supply Chain Response

Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…

2026-07-19 Blend Door Actuator: Symptoms, Location, Reset and Replacement Guide

A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…

2026-07-17 Raspberry Pi Alternatives: Chip-Level Comparison, Compatibility and Replacement Guide

Engineering guide to Raspberry Pi alternatives, covering chip-level differences, Orange Pi, ROCK, Jetson, Banana Pi, NanoPi, Compute Module, Pico, GPIO, camera, HAT compatibility, and replacement risks…

2026-07-13 How to Test Dynamic Load Response in Low-Voltage High-Current Buck Converters

Engineering guide to dynamic load response testing for high-current buck converters, covering load step setup, slew rate, Vcore undershoot, overshoot, recovery time, probe location, output capacitors a…

2026-07-08 Output Capacitor Selection for High-Current ASIC Vcore Rails

Engineering guide to output capacitor selection for ASIC Vcore rails, covering bulk capacitors, polymer capacitors, MLCC decoupling, DC bias, ESR, ESL, placement, transient response and substitution ri…

2026-07-07 High-Current ASIC Core Power Supply Design: 12-Phase Buck, PMBus and Dynamic Load Response

Engineering guide to high-current ASIC Vcore rails, covering 12-phase buck architecture, PMBus control, dynamic load testing, output capacitor networks, smart power stage selection, thermal design and …

2026-07-06 Voltage Regulator: Types, Circuits, Testing and Selection Guide

Voltage regulator guide covering linear, LDO, 7805, Zener, adjustable, buck, VRM and alternator regulators, with design checks, testing methods, troubleshooting and datasheet-based selection.

2026-06-30 Amplifiers Explained: Types, Circuits, Gain, Classes and Applications

Amplifier guide covering voltage, current and power amplification, gain, feedback, amplifier classes, audio and RF applications, op-amp circuits, transimpedance amplifiers, datasheet selection and trou…

2026-06-27 Machine Vision System: Components, Inspection Applications and Integration Guide

Machine vision system guide covering components, inspection workflow, camera and lens selection, FOV, pixel resolution, motion blur, strobe lighting, bandwidth, 2D/3D vision, integration, troubleshooti…