Infineon Technologies S25FL064LABNFI040

Overview

S25FL064LABNFI040 from Infineon is a 64 Mb (8 MB) serial NOR flash memory IC using 65-nm floating gate technology, supporting SPI multi-I/O (SIO/DIO/QIO/QPI) and DDR read modes up to 108 MHz, with uniform 4 KB sector erase, 100,000 program-erase cycles, and industrial temperature range (–40°C to +85°C), deployed in embedded boot code storage and XIP execution.

For engineers reviewing the S25FL064LABNFI040 datasheet, S25FL064LABNFI040 pinout, S25FL064LABNFI040 application, or S25FL064LABNFI040 equivalent, key selection criteria include Quad I/O read bandwidth (54 MBps), SFDP support for auto-configuration, security region protection, 2.7–3.6 V single supply operation, and SOIC-16 package compatibility with legacy S25FL-A/S25FL1-K families.

Technical Context

The S25FL064LABNFI040 implements a serial flash architecture with configurable 24-/32-bit addressing, supporting both standard SPI command subsets and extended QPI/DDR protocols. Its page programming buffer enables 256-byte atomic writes, while erase suspend/resume allows background operations during active host access.

Security is enforced via four dedicated 256-byte Security Regions outside main array, with non-volatile pointer region, volatile individual block lock, and power-supply lock-down options. The device uses JEDEC JESD216B SFDP for runtime parameter discovery and supports burst wrap and continuous XIP read modes.

Key Specifications

Pinout & Package

Package: 16-lead SOIC 300 mil (SO3016), Pb-free, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with S25FL064LAFMFI010, this SOIC-16 variant enables full QPI/DDR use and better thermal handling; versus MX25L6433FZNI-10G, it delivers 2× read bandwidth, hardware security isolation, and JEDEC-standardized configuration-critical for scalable industrial firmware architectures.

Availability

S25FL064LABNFI040 is available at Aetrix Electronics and suitable for industrial control systems, automotive telematics modules, and secure IoT gateways requiring stable component supply, long-term lifecycle assurance, and AEC-Q100-compliant variants.

Supply support for S25FL064LABNFI040 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

Infineon Technologies is a German semiconductor manufacturer specializing in power management, sensor, and memory solutions for industrial, automotive, and IoT markets.

The FL-L family targets high-performance embedded storage needs, delivering NOR flash speed and reliability with SPI interface simplicity-designed specifically for code execution, secure boot, and field-upgradable firmware in resource-constrained systems.

FAQ

Does S25FL064LABNFI040 support execute-in-place (XIP) operation?

Yes, it supports continuous XIP read mode with burst wrap capability, enabling direct code execution from flash without copying to RAM. This requires host controller SPI controller support for continuous read commands and proper cache coherency management. The device's fast read and Quad I/O bandwidth (54 MBps) make XIP viable for real-time applications.

What is the function of the IO3/RESET# pin in QPI mode?

In QPI mode, IO3 operates exclusively as a bidirectional I/O line (IO3), not as RESET#. Hardware reset must be disabled via Status Register bit SRP1=0 before entering QPI mode. Once in QPI, the pin participates in 4-bit command/address/data transfers; software reset remains available via the 0xFF command.

How does the Security Region protection work physically?

Security Regions 0–3 are physically separate 256-byte arrays located outside the main flash memory array. They are accessed via dedicated commands (e.g., 0x42, 0x44) and protected by independent lock bits in the Configuration Register. Power-supply lock-down prevents write access unless VCC remains within 2.7–3.6 V, blocking tampering during voltage glitch attacks.

Can S25FL064LABNFI040 replace S25FL128S in existing designs?

No-it is not a drop-in replacement due to differences in command set, SFDP layout, and security register mapping. While both are Infineon FL-family SPI NOR, S25FL128S uses different erase suspend behavior and lacks QPI/DDR support. Migration requires firmware driver updates and validation of timing margins per Rev. *H datasheet.