Infineon Technologies S25FL064LABNFI043

Overview

S25FL064LABNFI043 from Infineon is a 64 Mb (8 MB) serial NOR flash memory IC using 65-nm floating gate technology, operating from 2.7 V to 3.6 V, supporting SPI multi-I/O (SIO/DIO/QIO/QPI), DDR read modes, and uniform 4 KB/32 KB/64 KB erase sectors. It enables XIP execution and code shadowing in space-constrained embedded systems such as industrial controllers and automotive infotainment head units.

For engineers reviewing the S25FL064LABNFI043 datasheet, S25FL064LABNFI043 pinout, S25FL064LABNFI043 application, or S25FL064LABNFI043 equivalent, key selection criteria include Quad I/O read bandwidth (54 MBps), 100,000 program-erase cycles, industrial temperature grade (–40°C to +85°C), SOIC-16 package compatibility, and SFDP-based configuration support.

Technical Context

The S25FL064LABNFI043 implements a serial flash architecture with configurable addressing (24-/32-bit), dual- and quad-data-rate command sets, and programmable security regions outside the main array. Its SPI-MIO interface supports clock polarity modes 0 and 3, and QPI mode eliminates instruction overhead for high-throughput sequential reads.

It integrates dedicated hardware for erase suspend/resume, program suspend/resume, and deep power-down (2 µA), with status/configuration register protection and volatile/non-volatile block locking. The device uses JEDEC JESD216B-compliant SFDP for automatic host initialization and parameter discovery.

Key Specifications

Pinout & Package

Package: 16-lead SOIC 300 mil (SO3016), Pb-free, industrial temperature grade (–40°C to +85°C).

Key Features

Applications

Equivalent & Alternatives

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

Compared with S25FL064LABNFI043, the S25FL128SAGMFI000 offers double density and extended temperature tolerance at identical footprint and feature set, while the MX25L6433FZNI-10G sacrifices QPI, SFDP, and security for lower cost and smaller package-making it viable only in non-critical, non-automotive applications.

Availability

S25FL064LABNFI043 is available at Aetrix Electronics and suitable for industrial PLCs, automotive ADAS modules, medical imaging devices, and smart energy meters requiring stable component supply, long-term lifecycle support, and AEC-Q100-compatible sourcing.

Supply support for S25FL064LABNFI043 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, sensing, and memory solutions for industrial, automotive, and IoT markets.

The FL-L family targets high-reliability embedded systems needing fast, secure, and flexible serial flash with advanced interface modes and robust data integrity-designed specifically for code execution and firmware update in resource-constrained environments.

FAQ

What is the maximum clock frequency supported in QPI mode?

The S25FL064LABNFI043 supports up to 108 MHz in QPI mode for SDR operation and 54 MHz for DDR QPI read commands. At 108 MHz SDR, it achieves 54 MBps effective throughput using four data lines simultaneously, matching parallel NOR performance while using fewer PCB traces and pins.

Does this device support execute-in-place (XIP) operation?

Yes, the S25FL064LABNFI043 supports XIP via continuous read mode in both standard SPI and QPI interfaces. Host processors can fetch instructions directly from flash without copying to RAM, reducing boot latency and SRAM usage-validated across ARM Cortex-M and RISC-V platforms with appropriate cache and prefetch configuration.

How many security regions does this part provide, and what is their physical location?

This device provides four 256-byte Security Regions located outside the main 8 MB flash array, starting at address 0x00000000 in a dedicated address space. Each region supports independent volatile/non-volatile lock settings, password protection, and power-supply lock-down, ensuring cryptographic keys remain isolated from firmware updates.

Is the SOIC-16 package RoHS compliant and lead-free?

Yes, the S25FL064LABNFI043 in SOIC-16 (SO3016) packaging is fully RoHS compliant and Pb-free, meeting EU Directive 2011/65/EU and JEDEC JS709C requirements. The device carries the "Pb-free" marking on the top-side label and is qualified for reflow soldering per IPC/JEDEC J-STD-020D.3.