Infineon Technologies S25FL256LAGMFN003

Overview

S25FL256LAGMFN003 from Cypress Semiconductor is a 256 Mbit (32 Mbyte) 3.0 V serial NOR flash memory with SPI Multi-I/O interface, supporting SDR/DDR Quad I/O and QPI modes, 4KB uniform sector erase, 100,000 program-erase cycles, and industrial temperature range (–40°C to +85°C). It serves as non-volatile code storage in microcontroller boot systems.

For engineers reviewing the S25FL256LAGMFN003 datasheet, S25FL256LAGMFN003 pinout, S25FL256LAGMFN003 application, or S25FL256LAGMFN003 equivalent, key selection criteria include quad-read throughput (66 MB/s), SFDP support for auto-configuration, security region protection, suspend/resume erase/program capability, and WSON-8 package compatibility with space-constrained embedded designs.

Technical Context

The S25FL256LAGMFN003 implements a 65 nm floating gate architecture with a 256-byte page programming buffer and uniform erase granularity (4 KB / 32 KB / 64 KB). It supports JEDEC JESD216B Serial Flash Discoverable Parameters for runtime configuration discovery.

Its SPI-MIO interface enables mode-selectable operation: standard SPI (SIO), dual I/O (DIO), quad I/O (QIO), or quad peripheral interface (QPI), with DDR read commands transferring data on both clock edges. Configuration registers control QUAD, QPI, and security lock-down states.

Key Specifications

Pinout & Package

Package: 8-pin WSON (6 mm × 8 mm, 0.5 mm pitch), Pb-free, moisture sensitivity level 3.

Key Features

Applications

Equivalent & Alternatives

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

Compared with S25FL256SAGMFV000 and MX25L25645GMI-10G, the S25FL256LAGMFN003 delivers superior configurability via SFDP, deterministic real-time behavior via suspend/resume, and hardware-enforced security isolation - making it optimal for new designs requiring field-upgradability and functional safety.

Availability

S25FL256LAGMFN003 is available at Aetrix Electronics and suitable for industrial PLC firmware storage, automotive ADAS boot memory, and medical imaging device parameter storage requiring stable component supply and long-term lifecycle support.

Supply support for S25FL256LAGMFN003 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) designs high-performance, low-power semiconductor solutions for embedded systems, connectivity, and memory applications.

The FL-L family targets space-constrained, power-sensitive embedded systems requiring high-speed serial flash with advanced security and configurability - especially where XIP, field firmware updates, and safety-critical data isolation are mandatory.

FAQ

What is the maximum clock frequency supported in DDR Quad I/O mode?

The S25FL256LAGMFN003 supports DDR Quad I/O at up to 66 MHz clock frequency, delivering 66 MB/s effective read bandwidth. This is confirmed in the Performance Summary table on page 2 of the official datasheet (Document Number: 002-00124 Rev. *A), where DDR Quad Read is specified at 66 MHz with 66 MBps throughput.

Does this device support Execute-in-Place (XIP) operation?

Yes, the S25FL256LAGMFN003 supports continuous read mode for XIP operation, allowing direct code execution from flash without copying to RAM. The datasheet explicitly lists "Continuous (XIP)" as a supported read mode under the Read Features section on page 1, and confirms burst wrap and continuous addressing in Section 3.3.

How many security regions does the S25FL256LAGMFN003 provide, and what is their size?

The device provides four dedicated security regions, each 256 bytes in size, located outside the main flash array. These are documented in the Security Features section (page 1) and detailed in Section 7.5 (Security Regions Address Space) and Section 8.1, where they are described as isolated zones for bootloader keys or calibration data.

Is the WSON-8 package of S25FL256LAGMFN003 pin-compatible with earlier FL-S series devices?

Yes - the WSON-8 footprint (WNH008) is mechanically and electrically pin-compatible with S25FL1-K, S25FL-P, and S25FL-S family members using the same package, as stated in the Features section (page 1) under "Serial Command subset and footprint compatible with S25FL-A, S25FL1-K, S25FL-P, S25FL-S and S25FS-S SPI families."