Infineon Technologies S25FL256LAGNFN013

Overview

S25FL256LAGNFN013 from Cypress Semiconductor is a 256 Mbit (32 Mbyte) 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 throughput, 4KB uniform sector erase, and 100,000 program-erase cycles. It operates from 2.7 V to 3.6 V across –40°C to +105°C and is packaged in 16-pin SOIC 300 mil.

For engineers reviewing the S25FL256LAGNFN013 datasheet, S25FL256LAGNFN013 pinout, S25FL256LAGNFN013 application, or S25FL256LAGNFN013 equivalent, key selection criteria include quad-mode timing compliance, SFDP register support for auto-configuration, security region protection granularity, industrial temperature operation, and legacy footprint compatibility with S25FL-P/S25FL-S families.

Technical Context

The S25FL256LAGNFN013 implements a 65 nm floating gate architecture with a 256-byte page programming buffer and hierarchical erase structure (4KB sector / 32KB half-block / 64KB block / chip). It supports SPI clock modes 0 and 3, DDR read commands, and extended 32-bit addressing for >16MB address space.

Hardware reset and configurable I/O roles (IO0–IO3) enable flexible interface mapping: SI/SO in standard SPI, dual I/O with IO0/IO1, quad I/O with IO0–IO3, and QPI mode with all four I/Os active simultaneously. Security regions are implemented as non-volatile 256-byte blocks outside main array, protected via status/config register locks and power-supply lock-down.

Key Specifications

Pinout & Package

Package: 16-pin SOIC 300 mil (SO3016), Pb-free, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with S25FL256SAGMFV000 and MX25L25645GMI-10G, the S25FL256LAGNFN013 delivers superior bandwidth via DDR Quad I/O, guaranteed 2.7 V operation for brown-out resilience, and integrated security regions - making it the only option qualified for safety-critical industrial and automotive firmware storage.

Availability

S25FL256LAGNFN013 is available at Aetrix Electronics and suitable for automotive instrument clusters, industrial PLCs, medical imaging consoles, and smart energy meters requiring stable component supply, long-term lifecycle assurance, and industrial-plus temperature operation.

Supply support for S25FL256LAGNFN013 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 microcontroller solutions for automotive, industrial, and communications markets.

The FL-L family targets embedded systems needing high-speed serial flash with robust security, extended temperature operation, and seamless migration from parallel NOR - optimized for code execution, firmware updates, and secure configuration storage.

FAQ

Does S25FL256LAGNFN013 support execute-in-place (XIP) operation?

Yes, the device supports continuous read mode and burst wrap addressing for true XIP operation. When configured in Quad I/O or QPI mode, instruction fetch latency is minimized through 66 MB/s read bandwidth and on-chip address pipelining - enabling direct CPU execution without RAM shadowing in Cortex-M and RISC-V microcontrollers.

What is the function of the IO3/RESET# pin in QPI mode?

In QPI mode, IO3 functions exclusively as an I/O signal (not RESET#); the RESET# function is disabled when Configuration Register-2 QPI bit (CR2V[3]) is set. Hardware reset must then be performed via the software reset command (66h) or by toggling CS# with specific timing - IO3 remains active for data transfer throughout QPI operation.

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

Security regions reside in dedicated non-volatile memory outside the main array and are protected by separate lock bits (CR1V[6:5] and CR2V[6:5]). Unlike status register protection, which guards entire array writes, security region locks prevent modification of their contents even when array protection is disabled - enabling isolated storage of cryptographic keys and boot certificates.

Is S25FL256LAGNFN013 pin-compatible with earlier S25FL-P series devices?

Yes, the SOIC-16 package (SO3016) and pin functions match S25FL-P devices including S25FL128P and S25FL064P. However, FL-L adds IO3/RESET# dual functionality and enhanced security registers - firmware must initialize new configuration bits (CR1V[1], CR2V[3]) to enable quad/QPI modes and security features.