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

Cypress Semiconductor Corp S25FL164K0XNFI011

Name: S25FL164K0XNFI011
Brand: Cypress Semiconductor Corp
SKU: S25FL164K0XNFI011
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: S25FL164K0XNFI011

Manufacturer:: Cypress Semiconductor Corp

Category:: Memory

Package:: 8-WDFN Exposed Pad

Description:: IC FLASH 64MBIT SPI/QUAD 8WSON

Quantity:: RFQ Add To RFQ list

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Inventory:10,773

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Product details

Overview

S25FL164K0XNFI011 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, 20-year data retention, and hardware/software write protection. Used in embedded boot code storage and XIP execution for industrial controllers.

For engineers reviewing the S25FL164K0XNFI011 datasheet, S25FL164K0XNFI011 pinout, S25FL164K0XNFI011 application, or S25FL164K0XNFI011 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 SPI flash implements JEDEC-standard Serial Flash Discoverable Parameters (SFDP) for automatic configuration and supports command-set compatibility with prior S25FL-K families. Its 90 nm floating gate architecture enables single-supply operation from 2.6 V to 3.6 V across extended temperature ranges.

The device integrates three 256-byte one-time-programmable (OTP) security registers, pointer-based block protection, and dual-mode configuration (volatile/non-volatile). QIO mode disables WP# and HOLD# functions, while suspend/resume capability applies to both program and erase operations.

Key Specifications

Parameter	Value and Actual Design Meaning
Memory Density	64 Mbit (8 Mbyte) - sufficient for full firmware images and parameter tables in resource-constrained microcontrollers
Interface	SPI Multi-I/O (x1/x2/x4) - reduces pin count vs parallel NOR while maintaining high throughput via quad mode
Max Read Speed	108 MHz Quad Read - enables 54 MB/s sustained transfer, matching x16 parallel NOR bandwidth
Erase Granularity	Uniform 4 kB sectors and 64 kB blocks - allows fine-grained firmware updates without disturbing adjacent code
Data Retention	20 years minimum - ensures long-term reliability in unattended industrial deployments
Endurance	100K program-erase cycles - supports frequent field firmware upgrades over product lifetime
Operating Temp	−40 °C to +105 °C (Industrial Plus) - qualified for under-hood automotive and high-temp industrial environments
Security	Three 256-byte OTP registers + lock-down until power cycle - prevents unauthorized firmware modification or cloning

Pinout & Package

Package: 8-lead SOIC (208 mil), standardized footprint compatible with legacy S25FL-K devices.

Pin/Terminal	Circuit Role	Design Meaning
CS#	Chip Select	Active-low enable for SPI command sequence; must be asserted before clocking any instruction
SCK	Serial Clock	Input timing reference for all SPI transfers; supports modes 0 and 3 (CPOL/CPHA)
IO0 (SI)	Serial Input / Data Line 0	Primary data input in SIO/DIO/QIO; bidirectional in multi-I/O modes
IO1 (SO)	Serial Output / Data Line 1	Primary data output in SIO/DIO; bidirectional in QIO mode
IO2 (WP#)	Write Protect Input	Hardware-level protection override; disabled when QIO mode is active
IO3 (HOLD#)	Command Hold Input	Suspends ongoing read/write without losing internal state; disabled in QIO mode
VCC	Supply Voltage	2.6 V–3.6 V single supply; supports low-power deep power-down (2 µA typical)
VSS	Ground	Signal and core ground reference; decoupling required per JEDEC layout guidelines

Key Features

Feature	Design Value
Quad Read at 108 MHz	Enables 54 MB/s throughput - eliminates bottleneck for XIP execution of ARM Cortex-M4/M7 applications
Program/Erase Suspend & Resume	Allows real-time interrupt handling during flash operations - critical for deterministic response in motor control systems
Continuous and Wrapped Read Modes	Reduces cache-miss latency by >40% vs standard SPI read - improves real-time OS boot time and ISR latency
Pointer-Based Block Protection	Configurable 4 kB–full-memory protection range - isolates bootloader from application update corruption
8-Byte Unique ID	Factory-programmed per-device identifier - enables secure device authentication and firmware binding
Variable Read Latency	Adjustable dummy cycles - balances access time vs clock rate for optimal system-level timing closure

Applications

Industrial PLC Firmware Storage

Automotive Instrument Cluster Boot Memory

Use Scenario: Storing and executing boot firmware and configuration data in programmable logic controllers operating in harsh factory environments.

IC Role / Device Role / Timing Role: Non-volatile boot memory providing XIP-capable code storage with deterministic read latency and ECC-free reliability.

Use Value: 20-year data retention and −40 °C to +105 °C rating ensure uninterrupted operation over 15+ year equipment lifecycles without refresh.

Use Scenario: Holding calibrated display graphics, gauge logic, and safety-critical startup routines in automotive digital instrument clusters.

IC Role / Device Role / Timing Role: AEC-Q100 Grade 2 qualified SPI flash serving as primary boot source for MCU with strict power-on timing budgets.

Use Value: Quad Read at 108 MHz delivers sub-100 ms boot time; OTP registers prevent tampering with calibration data.

Medical Diagnostic Imaging Bootloader

Smart Energy Meter Firmware Vault

Use Scenario: Securing certified bootloader and regulatory-compliant firmware updates in portable ultrasound and MRI subsystems.

IC Role / Device Role / Timing Role: Trusted firmware vault with three independent OTP security registers and lock-down protection until power cycle.

Use Value: Prevents unauthorized firmware injection during service; SFDP enables auto-negotiated configuration across production batches.

Use Scenario: Storing tariff tables, encryption keys, and firmware patches in ANSI C12.22-compliant smart electricity meters deployed outdoors.

IC Role / Device Role / Timing Role: High-reliability, low-power flash memory supporting deep-sleep operation and secure OTA updates.

Use Value: 2 µA deep power-down current extends battery life; 100K endurance supports 10+ years of monthly firmware revisions.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
S25FL064L0XNFI011	Successor device with 65 nm process, 133 MHz Quad Read, enhanced SFDP v1.6, and extended 200K endurance	Requires updated PCB layout for 8-lead SOIC (208 mil) to 8-lead USON (4 mm × 4 mm) package change	Select for new designs requiring longer lifecycle support and higher performance; not drop-in compatible due to package and timing changes
MX25L6433FZNI-10G	64 Mbit SPI flash with 104 MHz Quad Read, no OTP security registers, no Industrial Plus temp grade	Lacks pointer-based block protection and unique ID; limited to −40 °C to +85 °C operation	Acceptable for cost-sensitive consumer applications where security and extended temperature are not required

Compared with S25FL164K0XNFI011, S25FL064L0XNFI011 offers higher speed and endurance but requires board redesign, while MX25L6433FZNI-10G sacrifices security and temperature range for lower cost and broader distributor availability.

Availability

S25FL164K0XNFI011 is available at Aetrix Electronics and suitable for industrial PLC firmware storage, automotive instrument cluster boot memory, and medical diagnostic imaging bootloader applications requiring stable component supply despite end-of-life status.

Supply support for S25FL164K0XNFI011 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 microcontrollers, connectivity solutions, and non-volatile memory for embedded systems.

The S25FL1-K family was designed specifically for high-reliability, SPI-based code storage in industrial and automotive applications where XIP performance, security, and extended temperature operation are mandatory.

FAQ

Is S25FL164K0XNFI011 still recommended for new designs?

No. Cypress explicitly states this part is "Not Recommended for New Design" and recommends migrating to S25FL064L. However, Aetrix Electronics maintains active inventory and supply chain support for legacy design continuity, including full traceability and lifecycle coordination for existing production programs.

What is the functional difference between WP# and software write protection?

WP# is a hardware-level signal that globally disables write/erase commands when asserted low, independent of internal register state. Software protection uses non-volatile status register bits to selectively lock sectors or blocks. Both can be used simultaneously, with hardware protection taking precedence - a critical fail-safe for safety-critical firmware.

Does S25FL164K0XNFI011 support Execute-In-Place (XIP) reliably?

Yes. With Continuous Read Mode and Quad Read at 108 MHz, it achieves 54 MB/s throughput - sufficient to feed ARM Cortex-M4/M7 cores without stalling. The 8-clock overhead per access and wrapped read mode minimize cache-miss penalties, enabling deterministic real-time XIP execution in industrial motion control applications.

How does the 8-byte Unique ID enhance system security?

The factory-programmed, unalterable 8-byte ID enables cryptographic binding of firmware images to specific hardware units. When combined with OTP security registers storing public keys or hash seeds, it forms the foundation for secure boot chains - preventing cloned or maliciously modified firmware from executing on authentic devices.

S25FL164K0XNFI011 Specifications

Product attributes: Attribute value

Manufacturer:: Cypress Semiconductor Corp

Series:: FL1-K

Package/Case:: 8-WDFN Exposed Pad

Packaging:: Tube

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:: 50µs, 3ms

Access Time:: 6 ns

Voltage - Supply:: 2.7V ~ 3.6V

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

Grade:: Automotive

Qualification:: AEC-Q100

Mounting Type:: Surface Mount

Supplier Device Package:: 8-WSON (5x6)

S25FL164K0XNFI011 FAQ

1.How can I place an order for S25FL164K0XNFI011 through Aetrix?

Please submit a Request for Quotation (RFQ) for S25FL164K0XNFI011 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 S25FL164K0XNFI011 reliable?

The price and inventory of S25FL164K0XNFI011 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S25FL164K0XNFI011 is usually 5 days.

3.What payment methods are accepted for S25FL164K0XNFI011?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S25FL164K0XNFI011 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for S25FL164K0XNFI011?

S25FL164K0XNFI011 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your S25FL164K0XNFI011 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 S25FL164K0XNFI011?

For technical support, including S25FL164K0XNFI011 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S25FL164K0XNFI011 requirements.

6.How does Aetrix verify that S25FL164K0XNFI011 is sourced from the original manufacturer or authorized distributors?

All S25FL164K0XNFI011 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 S25FL164K0XNFI011 meets industry standards.

7.What is the process for return or replacement of S25FL164K0XNFI011?

All S25FL164K0XNFI011 units undergo pre-shipment inspection (PSI). If there is an issue with S25FL164K0XNFI011, 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 S25FL164K0XNFI011 part is unused and in its original packaging.

Return procedure for S25FL164K0XNFI011:

1.Submit a request within 90 days.

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

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