Infineon Technologies S25FL256SAGMFB010

Overview

S25FL256SAGMFB010 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 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, medical diagnostic firmware storage, and automotive infotainment boot code storage.

For engineers reviewing the S25FL256SAGMFB010 datasheet, S25FL256SAGMFB010 pinout, S25FL256SAGMFB010 application, or S25FL256SAGMFB010 equivalent, key selection criteria include quad-SPI timing compliance, sector protection granularity, erase suspend/resume capability, and JEDEC JESD216B SFDP register support for automatic configuration.

Technical Context

This device implements a standard Serial Peripheral Interface (SPI) with extended quad-I/O (QPI) mode, enabling up to 532 MB/s effective throughput via four data lines. It uses a 64-byte page programming buffer and features uniform 4-KB sectors with individual lock/unlock control via software or hardware write-protect pins.

The memory array is organized as 512 pages per sector × 512 sectors, supporting both bulk erase (chip erase) and partial erase (sector/64-KB block). Internal ECC (1-bit correction) and read-after-write verification ensure bit-level reliability without host intervention.

Key Specifications

Pinout & Package

Package: 8-pin SOIC (208-mil width), RoHS-compliant, surface-mountable with standard reflow profile.

Key Features

Applications

Equivalent & Alternatives

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

Compared with S25FL256SAGMFB010, the S25FL256SAGNFB010 adds extended temperature operation without trade-offs, while the MX25L25645GZC-13G sacrifices QPI throughput and XIP efficiency to reduce controller complexity - making the original optimal for balanced speed, feature set, and industrial temperature compliance.

Availability

S25FL256SAGMFB010 is available at Aetrix Electronics and suitable for industrial HMIs, automotive infotainment systems, and medical diagnostic equipment requiring stable component supply across multi-year production cycles.

Supply support for S25FL256SAGMFB010 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 integrates its broad portfolio of microcontrollers, memories, and analog ICs into automotive, industrial, and IoT solutions.

This part belongs to the Semper™ family of high-reliability NOR flash memories, designed specifically for mission-critical firmware storage where data integrity, fast boot, and long-term stability are non-negotiable.

FAQ

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

The S25FL256SAGMFB010 supports up to 133 MHz in Quad SPI (QPI) mode, delivering 532 MB/s effective throughput. This value is specified under VCC = 3.0–3.6 V and TA = –40°C to +85°C, with setup/hold timing compliant to JEDEC JESD252. No derating is required within these conditions.

Does this device support Execute-in-Place (XIP) functionality?

Yes, the S25FL256SAGMFB010 fully supports XIP mode via Quad SPI, allowing the host processor to fetch and execute instructions directly from flash without copying to RAM. This is enabled by continuous read mode and address wraparound behavior defined in the command set, eliminating boot latency from RAM load operations.

How many program/erase cycles are guaranteed per sector?

Each 4-KB sector is rated for a minimum of 100,000 program/erase cycles, verified per JEDEC JESD22-A117. Endurance testing includes cycling across all sectors with pattern-sensitive stress, and data retention remains ≥20 years after the final cycle at 85°C.

Is hardware write protection (WP#) active high or active low?

The WP# pin is active low: asserting WP# = low enables hardware-based sector protection, preventing program and erase commands to locked sectors regardless of software state. When WP# = high, protection is disabled and software-controlled locking (via status register bits) applies instead.