Infineon Technologies S25FL128LAGMFA000

Overview

S25FL128LAGMFA000 from Infineon is a 128-Mbit serial NOR flash memory with quad SPI interface, 3.0–3.6 V supply, 133 MHz clock frequency, and uniform 256-byte programming. It operates in industrial temperature range (−40°C to +85°C) and supports XIP for embedded boot code storage in microcontroller-based systems.

For engineers reviewing the S25FL128LAGMFA000 datasheet, S25FL128LAGMFA000 pinout, S25FL128LAGMFA000 application, or S25FL128LAGMFA000 equivalent, key selection criteria include sector erase granularity, write-protect flexibility, deep power-down current (10 µA), and JEDEC-standard command set compliance.

Technical Context

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

Internal address decoding supports sequential read at up to 52 MB/s effective throughput in QPI mode. The memory includes an internal ECC engine for single-bit error correction and supports volatile/non-volatile status register writes with 100K endurance cycles.

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 applications.

Compared with S25FL128SAGMFA000, this part avoids 1.8 V complexity; compared with MX25L12833FZC-10G, it delivers faster boot and built-in ECC-critical for industrial and automotive reliability requirements.

Availability

S25FL128LAGMFA000 is available at Aetrix Electronics and suitable for industrial control systems, automotive ADAS modules, and medical imaging devices requiring stable component supply and long-term lifecycle support.

Supply support for S25FL128LAGMFA000 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, sensing, and security solutions for industrial, automotive, and IoT markets.

This device belongs to the Semper™ family of high-reliability NOR flash memories designed specifically for mission-critical embedded boot and code storage applications demanding ECC, long endurance, and AEC-Q100 qualification.

FAQ

Is S25FL128LAGMFA000 compatible with standard SPI controllers?

Yes, it supports legacy SPI mode (single I/O) in addition to Dual and Quad I/O modes. Standard SPI initialization sequence works without modification, though QPI mode requires issuing the 0x35 command to enter quad mode after power-up.

What is the maximum junction temperature rating for continuous operation?

The device is rated for continuous operation up to +125°C junction temperature under specified thermal conditions. Its industrial-grade qualification covers ambient temperatures from −40°C to +85°C with appropriate PCB thermal design.

Does this part support software reset commands?

Yes, it supports the 0x66 (Enable Reset) followed by 0x99 (Reset Memory) command sequence. This performs a full internal reset without requiring hardware reset assertion, useful for recovery from bus contention or protocol errors.

How is the 256-byte page program verified after write completion?

After issuing the Page Program command and waiting for Write In Progress (WIP) bit to clear, the host must perform a Read Status Register (0x05) to confirm the Write Enable Latch (WEL) bit is cleared and no error flags are set before initiating subsequent operations.