Infineon Technologies S25FL256LAGMFN000

Overview

S25FL256LAGMFN000 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 up to 133 MHz clock rate, 66 MB/s read bandwidth, 4 KB uniform sector erase, and industrial temperature range (–40°C to +85°C), deployed in embedded boot code storage and firmware update applications.

For engineers reviewing the S25FL256LAGMFN000 datasheet, S25FL256LAGMFN000 pinout, S25FL256LAGMFN000 application, or S25FL256LAGMFN000 equivalent, key selection criteria include quad-mode command compatibility, SFDP support for auto-configuration, security region protection granularity, DDR timing compliance, and WSON-8 package footprint alignment with space-constrained PCB layouts.

Technical Context

The S25FL256LAGMFN000 implements a 65 nm floating gate architecture with a 256-byte page programming buffer and hierarchical erase hierarchy (4 KB sector / 32 KB half-block / 64 KB block / chip). It supports JEDEC JESD216B Serial Flash Discoverable Parameters for runtime configuration discovery and enables XIP (execute-in-place) via continuous read mode.

Its SPI-MIO interface dynamically reassigns IO0–IO3 pins based on configuration register settings: SI/SO/WP#/RESET# in standard SPI mode, and IO0–IO3 in Quad I/O or QPI mode. The device includes dual protection mechanisms-volatile individual sector lock and non-volatile pointer region-with power supply lock-down and password options for Security Regions 2 and 3.

Key Specifications

Pinout & Package

Package: 8-pin WSON (6 mm × 8 mm, 0.5 mm pitch), Pb-free, moisture sensitivity level 3 (MSL3).

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 S25FL256LAGMFN000 delivers superior real-time update capability via suspend/resume, deterministic configuration via SFDP, and hardened security with four isolated regions and password enforcement-making it optimal for safety- and security-critical industrial deployments.

Availability

S25FL256LAGMFN000 is available at Aetrix Electronics and suitable for industrial gateways, medical diagnostics equipment, and automotive telematics modules requiring stable component supply, long-term lifecycle assurance, and qualified sourcing for production ramp.

Supply support for S25FL256LAGMFN000 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-reliability non-volatile memory and programmable system-on-chip solutions for industrial, automotive, and communications markets.

The FL-L family targets space-constrained embedded systems needing high-speed serial flash with robust security, XIP capability, and seamless migration from prior Cypress SPI families-optimized for boot code integrity and field-upgradable firmware architectures.

FAQ

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

The S25FL256LAGMFN000 supports DDR Quad I/O operation at up to 66 MHz clock frequency, delivering 66 MB/s effective read bandwidth by transferring data on both rising and falling edges of the clock. 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 S25FL256LAGMFN000 supports XIP via Continuous Read mode, allowing the host processor to fetch instructions directly from flash without copying to RAM. This is explicitly enabled by the "Continuous (XIP)" read mode listed under Read Commands in the Features section (page 1), and further detailed in Section 3.3 (Interface States) and Section 9.4 (Read Memory Array Commands) of the datasheet.

How many security regions does the S25FL256LAGMFN000 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 Sections 1.1 (General Description), 7.5 (Security Regions Address Space), and 8.1 (Security Regions) of the datasheet. Regions 2 and 3 support advanced protection including password, power supply lock-down, and permanent lock options.

Is the WSON-8 package of S25FL256LAGMFN000 pin-compatible with earlier Cypress S25FL series devices?

Yes, the WSON-8 package (WNH008) used by S25FL256LAGMFN000 maintains mechanical and signal pinout compatibility with prior Cypress FL-S, FL1-K, and FL-P family devices in the same footprint, as stated in Section 1.2.1 (Features Comparison) and Table 1.1 of the datasheet. This enables drop-in replacement in existing PCB layouts when migrating to FL-L performance and features.