Infineon Technologies S25FL256LAGBHN023

Overview

S25FL256LAGBHN023 from Cypress Semiconductor is a 256 Mbit (32 Mbyte) serial NOR flash memory with SPI, Dual I/O, Quad I/O, QPI, and DDR read support. It operates from 2.7 V to 3.6 V, features uniform 4 KB/32 KB/64 KB erase blocks, 256-byte page programming, and supports XIP and code shadowing in industrial temperature range (–40°C to +85°C). Used in embedded boot storage for microcontrollers and FPGA configuration.

For engineers reviewing the S25FL256LAGBHN023 datasheet, S25FL256LAGBHN023 pinout, S25FL256LAGBHN023 application, or S25FL256LAGBHN023 equivalent, key selection criteria include quad-mode timing compliance, SFDP register support, security region protection granularity, and DDR read throughput at 66 MHz clock.

Technical Context

The device implements a 65 nm floating gate architecture with a 256-byte page programming buffer and supports suspend/resume for both program and erase operations. Its command set includes standard SPI, extended address modes (24-/32-bit), and JEDEC JESD216B-compliant SFDP for runtime configuration discovery.

It delivers up to 66 MB/s read bandwidth via DDR Quad I/O at 66 MHz, and supports four independent 256-byte security regions outside the main array with non-volatile pointer region locking, power supply lock-down, and password-based protection for Security Regions 2 and 3.

Key Specifications

Pinout & Package

Package: 24-ball BGA (6 × 8 mm, FAB024 footprint, 5 × 5 ball array), Pb-free, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with S25FL256SAGMFI000 and MX25L25645GMI-08G, the S25FL256LAGBHN023 provides superior bandwidth via DDR Quad I/O, standardized SFDP-driven configuration, and finer-grained security region control - making it optimal for new designs prioritizing real-time responsiveness and secure firmware agility.

Availability

S25FL256LAGBHN023 is available at Aetrix Electronics and suitable for MCU boot storage, FPGA configuration, secure firmware update, and telematics data logging requiring stable component supply and long-term industrial lifecycle support.

Supply support for S25FL256LAGBHN023 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, automotive, and industrial systems.

The FL-L family targets high-density, low-pin-count serial flash applications demanding fast read speeds, robust security, and seamless migration from prior Cypress SPI flash generations.

FAQ

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

The S25FL256LAGBHN023 supports DDR Quad I/O operation at up to 66 MHz clock frequency, delivering 66 MB/s effective read bandwidth. This mode transfers address and data on both rising and falling edges of SCK, doubling throughput versus SDR at same clock rate. Timing compliance requires strict setup/hold margins per AC specification section 5.5 of the datasheet.

Does this device support hardware write protection independent of software commands?

Yes - the WP# pin (IO2) provides hardware write protection when CR1V[1] = 0 and SR1NV[7] = 1. In this configuration, driving WP# low disables all write, program, and erase commands regardless of status register settings. The internal pull-up allows safe default operation when the pin is left unconnected.

How many security regions does the S25FL256LAGBHN023 provide, and where are they located?

The device provides four dedicated 256-byte security regions located outside the main 32 Mbyte flash array, starting at address 0x00000000. Regions 2 and 3 support non-volatile locking via power supply lock-down, password, or permanent protection. The pointer region enables non-volatile definition of protected sector/block ranges for flexible firmware partitioning.

Can the S25FL256LAGBHN023 be used in place of the S25FL256SAGMFI000 without hardware changes?

Yes - it shares identical 24-ball BGA (FAB024) packaging, pinout, and voltage specifications. However, firmware must be updated to enable DDR mode, configure SFDP parameters, and leverage program/erase suspend functionality. Migration is supported per Cypress Application Note AN98592, but timing and security register behavior differ.