Infineon Technologies S25FL128LAGMFI001

Overview

S25FL128LAGMFI001 from Infineon is a 128-Mbit serial NOR flash memory with Quad SPI interface, 3.0 V supply voltage, 100 MHz clock frequency, and uniform 4-KB sector erase capability. It serves as non-volatile program/data storage in microcontroller-based embedded systems requiring fast read access and reliable code execution.

For engineers reviewing the S25FL128LAGMFI001 datasheet, S25FL128LAGMFI001 pinout, S25FL128LAGMFI001 application, or S25FL128LAGMFI001 equivalent, key selection criteria include Quad SPI timing compliance, sector protection granularity, write endurance (100K cycles), and industrial temperature range (-40°C to +85°C) support.

Technical Context

This device implements a standard Serial Peripheral Interface (SPI) with enhanced Quad I/O mode supporting single/dual/quad read commands. It uses a 4-byte address space and supports volatile and non-volatile status register configuration for write protection and latency tuning.

Internal architecture includes a 128-Mbit (16 MB) array organized as 32,768 sectors of 4 KB each, with hardware reset capability and deep power-down mode consuming ≤10 µA. The memory supports both standard and fast read operations with configurable dummy cycles.

Key Specifications

Pinout & Package

Supplied in an 8-pin SOIC (Small Outline Integrated Circuit) package with 208-mil width, compliant with JEDEC MS-012AC. Pin functions are defined for standard SPI operation with dedicated hold and write-protect inputs.

Key Features

Applications

Equivalent & Alternatives

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

Compared with S25FL128SAGMFI001, this part lacks SFDP-defined security registers but offers identical timing and sector layout; versus MX25L12833FZNI-10G, it provides superior hardware-controlled protection and Quad I/O bandwidth at slightly higher unit cost.

Availability

S25FL128LAGMFI001 is available at Aetrix Electronics and suitable for industrial PLC firmware storage, automotive body control modules, and network router boot image applications requiring stable component supply and long-term lifecycle assurance.

Supply support for S25FL128LAGMFI001 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, sensor, and memory solutions for industrial, automotive, and communications markets.

This device belongs to the S25FL family of high-performance serial NOR flash memories designed specifically for code execution and reliable data logging in resource-constrained embedded systems.

FAQ

Is S25FL128LAGMFI001 pin-compatible with earlier S25FL128L versions?

Yes, it maintains identical 8-pin SOIC footprint and pin function mapping with legacy S25FL128L devices. No PCB redesign is needed when migrating from revision A to revision B silicon, though firmware may require minor SPI command set updates for new status register bits.

Does this device support XIP (execute-in-place) operation?

Yes, it supports true XIP mode with continuous read commands and configurable dummy cycles. When interfaced with compatible microcontrollers (e.g., ARM Cortex-M7 with QSPI controller), instructions execute directly from flash without RAM loading, reducing boot latency and memory footprint.

What is the maximum junction temperature during write/erase operations?

The absolute maximum junction temperature is +125°C, but sustained operation above +85°C ambient is not recommended during programming. Data sheet specifies that erase/write cycles must be performed within -40°C to +85°C case temperature range to ensure 100K cycle endurance and data retention beyond 20 years.

Can HOLD# and WP# pins be left unconnected in simple applications?

No - both pins must be actively driven. HOLD# requires pull-up to VCC; WP# requires pull-up for normal operation. Floating these pins risks unintended hold activation or accidental write protection, leading to communication failures or corrupted writes during power-up transients.