Infineon Technologies S25FL256LAGBHN030

Overview

S25FL256LAGBHN030 from Cypress Semiconductor is a 256 Mbit (32 MB) 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). It integrates 256-byte page programming buffer, program/erase suspend-resume, and four 256-byte security regions for firmware protection in embedded boot code storage.

For engineers reviewing the S25FL256LAGBHN030 datasheet, S25FL256LAGBHN030 pinout, S25FL256LAGBHN030 application, or S25FL256LAGBHN030 equivalent, key selection criteria include quad-mode timing compliance, SFDP v1.5 parameter discovery support, security region lock granularity, 2.7–3.6 V single-supply operation, and WSON-8 package compatibility with PCB layout constraints for space-constrained IoT edge nodes.

Technical Context

This device implements a floating-gate 65 nm process architecture with dual-bank read-while-write capability enabled via program/erase suspend-resume logic. Its command set fully supports JEDEC JESD216B SFDP v1.5 for automatic configuration register initialization and includes dedicated opcodes for individual block lock, pointer region management, and power supply lock-down of Security Regions 2 and 3.

The SPI-MIO interface dynamically reconfigures SI/SO/WP#/IO3 pins between standard SPI, Dual I/O, Quad I/O, and QPI protocols based on Configuration Register bits CR1V[1] and CR2V[3]. DDR read operations transfer address and data on both clock edges, achieving 66 MB/s at 66 MHz without increasing pin count or signal integrity burden.

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 S25FL256SAGMFI00 and MX25L25645GMI-10G, the S25FL256LAGBHN030 uniquely balances DDR-enabled bandwidth, JEDEC SFDP auto-configuration, and industrial temperature reliability - making it optimal for new designs requiring future-proof, drop-in firmware storage without host-side protocol extensions.

Availability

S25FL256LAGBHN030 is available at Aetrix Electronics and suitable for secure boot storage, IoT edge node firmware, and industrial HMI display applications requiring stable component supply across multi-year production cycles.

Supply support for S25FL256LAGBHN030 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 memory and programmable solutions for embedded systems, automotive, and industrial markets.

The FL-L family targets space-constrained, power-sensitive applications needing fast, secure, and reliable serial flash - specifically optimized for code shadowing, XIP execution, and firmware update resilience in connected devices.

FAQ

Does S25FL256LAGBHN030 support execute-in-place (XIP) operation?

Yes, it supports continuous read mode for XIP execution. The device delivers burst-wrap reads at up to 66 MB/s in Quad I/O mode, enabling direct CPU instruction fetch without intermediate RAM buffering. XIP is validated across all supported temperature ranges and requires host controller configuration of the Continuous Read Enable bit (CR1V[6]) and proper cache coherency handling.

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

In Quad I/O mode (CR1V[1] = 1), IO3/RESET# functions exclusively as IO3 - the fourth bidirectional data line. RESET# functionality is disabled unless CR2V[7] = 1 and CS# is high. This dual-role design preserves pin count while enabling hardware reset fallback without adding external components.

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

Standard SRP bits protect the entire flash array via volatile/non-volatile locks. Security Regions provide four isolated 256-byte zones outside the main array, each independently configurable for power supply lock-down, password access, or permanent protection - enabling secure key storage without affecting firmware partitioning or update workflows.

Can S25FL256LAGBHN030 be used in place of older S25FL256S devices?

Yes, it is footprint- and command-compatible with S25FL256S devices, but adds DDR Quad I/O, enhanced SFDP, and improved security features. Host firmware must be updated to leverage new capabilities; legacy SDR/Dual/Quad operation remains unchanged. Migration requires verifying timing margins for 133 MHz operation and updating security region initialization routines.