Infineon Technologies S25FL064LABNFB043

Overview

S25FL064LABNFB043 from Infineon is a 64 Mb (8 MB) serial NOR flash memory using 65-nm floating gate technology, supporting SPI multi-I/O (SIO/DIO/QIO/QPI) and DDR read modes up to 108 MHz clock rate with 54 MBps throughput. It features uniform 4 KB sector erase, 256-byte page programming, and operates from 2.7 V to 3.6 V across –40°C to +105°C (Industrial Plus grade), deployed in embedded boot code storage and XIP execution.

For engineers reviewing the S25FL064LABNFB043 datasheet, S25FL064LABNFB043 pinout, S25FL064LABNFB043 application, or S25FL064LABNFB043 equivalent, this device delivers verified Quad I/O and QPI command compatibility with S25FL-P/S25FL-S/S25FS-S families, SFDP-based configuration, and security region protection for secure firmware updates in space-constrained industrial controllers.

Technical Context

The S25FL064LABNFB043 implements a serial flash architecture with dual- and quad-bit I/O paths, enabling burst wrap and continuous XIP read modes via configurable clock polarity/phase (modes 0 and 3). Its command set includes DDR Quad Read at 54 MHz delivering 54 MBps, alongside standard Fast Read (13.5 MBps) and Dual Read (27 MBps).

It integrates four 256-byte Security Regions outside the main array, supported by volatile individual block lock, non-volatile pointer region, and power supply lock-down or password protection for Regions 2–3 - all managed through dedicated IRP and Security Region commands per JEDEC JESD216B-compliant SFDP tables.

Key Specifications

Pinout & Package

Package: 8-pin WSON (5 mm × 6 mm, WND008 footprint), Pb-free, moisture sensitivity level 3.

Key Features

Applications

Equivalent & Alternatives

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

Compared with S25FL064LABNFB043, the Cypress alternative offers identical functionality in SOIC packaging but sacrifices WSON's space efficiency, while the Winbond part trades security features and 20-year retention for lower cost and dual-voltage flexibility - making Infineon's part optimal for certified industrial and automotive firmware storage.

Availability

S25FL064LABNFB043 is available at Aetrix Electronics and suitable for industrial PLCs, automotive ADAS ECUs, medical imaging devices, and smart energy meters requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for S25FL064LABNFB043 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, automotive microcontrollers, and secure memory solutions, with global R&D and manufacturing infrastructure.

The FL-L family targets high-reliability embedded systems requiring secure, high-speed serial flash with extended temperature operation and robust data integrity - specifically designed for boot code, firmware, and configuration storage in industrial and automotive applications.

FAQ

Does S25FL064LABNFB043 support execute-in-place (XIP) operation?

Yes, it supports continuous XIP read mode with burst wrap addressing, enabling direct code execution from flash without copying to RAM. This mode is enabled via specific QIO or QPI read commands and requires host controller support for address auto-increment and latency tolerance.

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

In QPI mode, the RESET# / IO3 pin serves as IO3 for quad-bit data transfers and retains reset functionality: asserting it low for ≥20 µs resets internal state and forces exit from Deep Power Down or QPI mode back to standard SPI mode.

How many Security Regions does S25FL064LABNFB043 provide, and where are they located?

It provides four 256-byte Security Regions located outside the main flash array at fixed addresses (0x00000000–0x000003FF). Regions 2 and 3 support password or permanent protection; all four are accessible only via dedicated Security Region commands, not standard read/write operations.

Is S25FL064LABNFB043 pin-compatible with earlier S25FL-A series devices?

No - while command subsets and footprints are compatible with S25FL-P/S25FL-S/S25FS-S families, the S25FL-A series uses different package dimensions and lacks QPI/DDR support. Pin mapping differs in SOIC variants due to added RESET#/IO3 functionality not present in S25FL-A.