Infineon Technologies S25FL256LAGMFI001

Overview

S25FL256LAGMFI001 from Infineon is a 256-Mbit serial NOR flash memory with Quad SPI interface, 133 MHz clock frequency, and 3.0 V supply voltage, used for code storage and execution in embedded microcontroller boot applications.

For engineers reviewing the S25FL256LAGMFI001 datasheet, S25FL256LAGMFI001 pinout, S25FL256LAGMFI001 application, or S25FL256LAGMFI001 equivalent, key selection criteria include read latency, sector erase granularity, write endurance, and industrial temperature range compliance.

Technical Context

This device implements a standard Serial Peripheral Interface (SPI) with Quad I/O (QPI) mode support, enabling 4-bit data transfers per clock cycle. It features uniform 4-KB sectors and 64-KB blocks, with configurable write protection via status register bits and hardware WP# pin control.

Internal address decoding supports linear addressing across the full 256-Mbit array. The memory uses floating-gate NOR technology with ECC-enabled read operations and supports both volatile and non-volatile configuration register settings.

Key Specifications

Pinout & Package

Supplied in an 8-pin SOIC (208-mil) package with standard SPI pinout and dual-function HOLD#/RESET# pin.

Key Features

Applications

Equivalent & Alternatives

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

Compared with S25FL256SAGMFI001, this part omits security extensions but reduces BOM cost; versus MX25L25645GMI-13G, it adds ECC and Infineon's industrial qualification-critical for medical and automotive deployments.

Availability

S25FL256LAGMFI001 is available at Aetrix Electronics and suitable for industrial automation, automotive electronics, and medical device manufacturing requiring stable component supply and long-lifecycle support.

Supply support for S25FL256LAGMFI001 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 AG is a German semiconductor manufacturer specializing in power management, automotive ICs, and memory solutions for industrial and mission-critical applications.

This device belongs to the S25FL family of high-reliability serial NOR flash memories, designed specifically for code storage and XIP execution in safety- and uptime-sensitive embedded systems.

FAQ

What is the maximum operating frequency in Quad SPI mode?

The S25FL256LAGMFI001 supports up to 133 MHz in Quad SPI (QPI) mode, delivering up to 532 MB/s effective read bandwidth. This frequency is specified under VCC = 3.0–3.6 V and TA = –40°C to +85°C conditions, with setup/hold timing validated per JEDEC JESD252A.

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

Yes, the S25FL256LAGMFI001 supports XIP operation via its Quad SPI interface, allowing microcontrollers to execute code directly from flash without copying to RAM. Low-latency read modes and continuous read commands minimize instruction fetch stalls during runtime.

How is write protection implemented?

Write protection is implemented through both hardware and software methods: the WP# pin provides immediate physical lock of protected sectors, while status register bits (SRWD, BP0–BP3) allow configurable software-based sector locking. Both mechanisms can be used concurrently for defense-in-depth.

Is an external pull-up resistor required on the HOLD# pin?

No external pull-up is required on HOLD#; the pin has an internal weak pull-up (typ. 50 kΩ) that holds it inactive (high) during power-up. External pull-up is optional for noise immunity in high-EMI environments but not mandatory per Infineon's recommended circuit design.