Infineon Technologies S25FL256LAGMFA001

Overview

S25FL256LAGMFA001 from Infineon is a 256-Mbit serial NOR flash memory with Quad SPI interface, 133 MHz clock frequency, and 3.0 V supply voltage, used for code storage and execution in embedded microcontroller systems.

For engineers reviewing the S25FL256LAGMFA001 datasheet, S25FL256LAGMFA001 pinout, S25FL256LAGMFA001 application, or S25FL256LAGMFA001 equivalent, key selection criteria include read latency, sector erase granularity, write protection scheme, and industrial temperature range support.

Technical Context

This device implements a standard Serial Peripheral Interface (SPI) with extended Quad I/O mode supporting single/dual/quad read commands. It features a 64-byte page programming buffer and uniform 4-KB sector erase architecture.

Internal address decoding supports 27-bit addressing for full 256-Mbit capacity access. The device includes hardware write protection via WP# pin and software-controlled block protection using status register bits.

Key Specifications

Pinout & Package

Package: 8-pin SOIC (208 mil, 5.2 mm × 5.2 mm), RoHS-compliant, surface-mount.

Key Features

Applications

Equivalent & Alternatives

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

Compared with S25FL256SAGMFA001, this part trades peak bandwidth for broader compatibility and lower EMI; versus MX25L25645GMI-10G, it delivers 4× higher effective read throughput and integrated security features absent in the Macronix device.

Availability

S25FL256LAGMFA001 is available at Aetrix Electronics and suitable for industrial control systems, automotive ADAS modules, and medical imaging equipment requiring stable component supply across multi-year production cycles.

Supply support for S25FL256LAGMFA001 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 AG is a German semiconductor manufacturer specializing in power management, sensing, and memory solutions for industrial, automotive, and IoT applications.

This device belongs to the S25FL-S family of high-reliability serial NOR flash memories designed specifically for code storage in safety-critical and long-lifecycle embedded systems.

FAQ

What is the maximum supported clock frequency in Quad SPI mode?

The S25FL256LAGMFA001 supports up to 133 MHz in Quad SPI mode, delivering 532 MB/s effective throughput. This frequency is guaranteed across the full industrial temperature range (−40°C to +105°C) and requires proper PCB layout with matched trace lengths and controlled impedance.

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

Yes, the device supports XIP directly from the memory array without copying to RAM. Its NOR architecture and low-latency read commands (e.g., Fast Read Quad Output) enable deterministic instruction fetch timing, essential for real-time MCU boot and runtime code execution.

How is write protection implemented on this flash device?

Write protection is implemented through both hardware and software methods: the WP# pin provides physical lock when asserted low, while status register bits (BP0–BP3) enable selective protection of top/bottom 64 KB blocks or the entire array, configurable via Write Status Register command.

Is an external reset circuit required for reliable operation?

No external reset circuit is required. The device supports a dedicated Reset Enable/Reset command (0xFF) that restores internal logic to known state without power cycling, enabling robust recovery in systems where supply stability cannot be guaranteed during fault conditions.