Infineon Technologies S25FL064LABNFM043

Overview

S25FL064LABNFM043 from Infineon Technologies is a 64 Mb (8 MB) serial NOR flash memory with quad SPI multi-I/O interface, 3.0 V single supply, industrial temperature grade (–40°C to +85°C), and 65 nm floating-gate process technology. It supports SDR and DDR quad I/O read commands up to 108 MHz SDR / 54 MHz DDR, delivers up to 54 MBps read throughput, and features uniform 4 KB sector erase, 100,000 program/erase cycles, and 20-year data retention.

For engineers reviewing the S25FL064LABNFM043 datasheet, S25FL064LABNFM043 pinout, S25FL064LABNFM043 application, or S25FL064LABNFM043 equivalent, key selection criteria include quad/DDR read bandwidth, sector-erase granularity, security register protection, AEC-Q100 Grade 3 qualification, and SOIC-16 footprint compatibility with legacy S25FL-P/S25FL-S families.

Technical Context

This device implements a serial peripheral interface with configurable clock polarity/phase (Mode 0 and 3), supporting standard SPI, dual I/O, quad I/O, QPI, and DDR quad I/O command sets. Its architecture includes a 256-byte page programming buffer, suspend/resume capability for both program and erase operations, and independent 256-byte security registers.

The memory array is organized into uniform 4 KB sectors, 32 KB half-blocks, and 64 KB blocks, with chip-erase support. SFDP (JESD216B) enables host auto-detection of configuration parameters, while dedicated security regions provide hardware-based write protection with volatile/non-volatile locking and password-enabled lockdown.

Key Specifications

Pinout & Package

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

Key Features

Applications

Equivalent & Alternatives

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

Compared with S25FL064LABNFM043, the S25FL064LAFMFI01 sacrifices reset and quad I/O flexibility for smaller footprint and lower cost, while the S25FL128SAGMFV01 offers scalable capacity within identical timing, security, and package constraints - enabling seamless upgrade paths without firmware or layout revision.

Availability

S25FL064LABNFM043 is available at Aetrix Electronics and suitable for industrial PLCs, automotive ADAS modules, and medical imaging systems requiring stable component supply, long-term lifecycle support, and AEC-Q100 Grade 3 qualification.

Supply support for S25FL064LABNFM043 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 ICs, and secure microcontrollers, with global manufacturing and quality certification across automotive, industrial, and IoT segments.

The S25FL-L family targets high-reliability embedded systems needing fast, secure, and scalable serial flash - designed specifically for boot code storage, XIP execution, and firmware updates in automotive, industrial, and medical applications.

FAQ

Does S25FL064LABNFM043 support execute-in-place (XIP) operation?

Yes. The device supports continuous burst read mode with wrap-around addressing, enabling direct code execution from flash without shadowing to RAM. This is confirmed in Section 5.3 ("Interface States") and Table 8-4 ("Read Commands") of the datasheet, which lists "Continuous (XIP)" as a supported read mode for all SDR and DDR quad I/O commands.

What is the function of the RESET# / IO3 pin in quad I/O mode?

In quad I/O and QPI modes, the RESET# pin becomes IO3 - the fourth bidirectional data line. Hardware reset functionality is disabled during these modes. To assert reset, the host must first exit quad/QPI mode using the Release Power-Down/Device ID command, then drive RESET# low. This behavior is defined in Section 3.9 and Figure 3-2 of the datasheet.

How does the security region protection differ from standard status register write protection?

Standard status register protection (SRP0/SRP1) locks the entire flash array or block ranges via volatile/non-volatile bits. Security regions are physically separate 256-byte arrays with independent lock bits, password registers, and power-lockdown capability - preventing unauthorized access even if main array protection is bypassed. Details are in Sections 7.1 and 8.7 of the datasheet.

Is the SOIC-16 package of S25FL064LABNFM043 pin-compatible with earlier S25FL-P series devices?

Yes. The SOIC-16 variant maintains identical pinout, command set, and timing specifications with S25FL-P family members (e.g., S25FL128P). This backward compatibility is explicitly stated in the "Features" section under "Footprint compatibility" and verified in Table 13-1 ("Orderable Part Numbers") of the datasheet.