Infineon Technologies S25FL256SAGBHBA00

Overview

S25FL256SAGBHBA00 from Cypress Semiconductor (now Infineon) is a 256-Mbit serial NOR flash memory with Quad SPI interface, 133 MHz clock frequency, and 3.0 V to 3.6 V supply voltage. It supports XIP (execute-in-place), dual/quad I/O modes, and offers 100K program/erase cycles with 20-year data retention - deployed in industrial HMIs and network router firmware storage.

For engineers reviewing the S25FL256SAGBHBA00 datasheet, S25FL256SAGBHBA00 pinout, S25FL256SAGBHBA00 application, or S25FL256SAGBHBA00 equivalent, key selection criteria include quad-SPI timing compliance, sector protection granularity, reset recovery time, and JEDEC-standard SFDP register support for auto-configuration.

Technical Context

This device implements a standard SPI-compatible command set extended with Quad I/O opcodes (0x6B, 0xEB, 0x72, 0x7A) and supports volatile/non-volatile status register writes. It features a 4-KB uniform sector architecture with individual sector lock bits and hardware write protection via WP# pin.

The memory array is organized as 512 pages of 512 bytes each per sector, enabling byte-level read and page-program operations. Erase granularity includes 4-KB sectors, 32-KB blocks, and full-chip erase, all verified under industrial temperature range (−40°C to +85°C).

Key Specifications

Pinout & Package

8-pin SOIC (208-mil) package with standard SPI pinout and dedicated HOLD# and WP# control terminals.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MX25L25645GMI-10G and W25Q256JWSIQ, the S25FL256SAGBHBA00 delivers superior industrial longevity (20-year retention, 100K cycles) and standardized auto-configuration (SFDP v1.6), making it optimal for long-life, high-reliability embedded systems requiring minimal driver maintenance.

Availability

S25FL256SAGBHBA00 is available at Aetrix Electronics and suitable for industrial HMIs, network infrastructure equipment, and medical diagnostic devices requiring stable component supply across multi-year production cycles.

Supply support for S25FL256SAGBHBA00 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 acquired Cypress Semiconductor in 2020 and maintains its broad portfolio of nonvolatile memory solutions for industrial and automotive applications.

The S25FL family targets high-reliability embedded systems requiring deterministic boot performance, long-term data integrity, and robust firmware update resilience in harsh operating environments.

FAQ

What is the maximum clock frequency supported by S25FL256SAGBHBA00 in Quad SPI mode?

The device supports up to 133 MHz in standard Quad SPI mode (single data rate), delivering 532 MB/s effective throughput. It does not support DDR or DTR modes. Timing compliance is verified per JEDEC JESD252 specification, with setup/hold margins validated across voltage and temperature extremes.

Does S25FL256SAGBHBA00 support execute-in-place (XIP) operation?

Yes, it supports true XIP operation with continuous read mode and wrap-around addressing, allowing CPU instruction fetch directly from flash without copying to RAM. This reduces system memory footprint and boot latency, and is validated for ARM Cortex-M and RISC-V cores with appropriate cache and prefetch settings.

How is sector protection implemented on this device?

Sector protection uses both software lock bits in the status register and hardware write protection via the WP# pin. When WP# is asserted low, all sectors become read-only regardless of software lock state. Individual 4-KB sectors can also be locked/unlocked via Status Register Write Protection (SRWP) bit and BP[2:0] bits.

Is there a replacement part for S25FL256SAGBHBA00 after end-of-life announcement?

Infineon has not announced EOL for this part; it remains active in their portfolio as of Q2 2024. The recommended long-term alternative is S25FL256SDSBHSA10 (same density, enhanced security features, and identical pinout), which shares identical timing, command set, and package dimensions for seamless migration.