Infineon Technologies S25FL128SAGBAEA00

Overview

S25FL128SAGBAEA00 from Infineon is a 128 Mb (16 MB) serial NOR flash memory with SPI Multi-I/O interface, designed for high-reliability military applications requiring extended temperature operation (-55°C to +125°C), hardware ECC, and dual/quad/DDR read modes. It features 256-byte or 512-byte page programming, hybrid or uniform sector erase options, and 100 program-erase cycles endurance.

For engineers reviewing the S25FL128SAGBAEA00 datasheet, S25FL128SAGBAEA00 pinout, S25FL128SAGBAEA00 application, or S25FL128SAGBAEA00 equivalent, key selection criteria include military-grade temperature range, Quad DDR read throughput up to 80 MBps, OTP security array, programmable block protection, and compatibility with legacy S25FL-A/K/P families.

Technical Context

This device implements a 65-nm MIRRORBIT™ Eclipse architecture with separate core (2.7–3.6 V) and I/O (1.65–3.6 V) supply domains. It supports SPI clock modes 0 and 3, extended 24-/32-bit addressing, and AutoBoot functionality that executes preconfigured Normal or Quad Read at power-up or reset.

The flash integrates hardware-based single-bit error correction (ECC), configurable sector protection via status register bits and Advanced Sector Protection (ASP), and dual-voltage operation enabling interoperability with 1.8 V and 3.3 V host systems while maintaining full read/write performance across voltage ranges.

Key Specifications

Pinout & Package

Package: 24-ball FBGA (FAB024), 6 mm × 8 mm, Pb-free, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with S25FL128SAGBAEA00, the S25FL128SAGBHI00 sacrifices military temperature range and advanced security for lower cost, while the MX25L12833FZNI-10G omits DDR, ECC, and OTP-making it unsuitable for new military or high-integrity designs requiring those capabilities.

Availability

S25FL128SAGBAEA00 is available at Aetrix Electronics and suitable for aerospace flight control, military radar signal processing, and secure communications terminals requiring stable component supply across extended temperature and long-life programs.

Supply support for S25FL128SAGBAEA00 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 is a German semiconductor manufacturer specializing in power management, automotive ICs, and high-reliability memory solutions for industrial and defense markets.

The FL-S family targets military and aerospace applications demanding extended temperature operation, hardware security, and interoperability with legacy SPI flash architectures-designed specifically to replace aging S25FL-A/K series in mission-critical firmware storage.

FAQ

Does S25FL128SAGBAEA00 support both 24-bit and 32-bit addressing?

Yes, it supports extended addressing modes: 24-bit addressing for compatibility with legacy 16 MB devices and 32-bit addressing to access the full 128 Mb address space. The mode is selected via configuration register bit CR[2], and both modes maintain identical command structure and timing.

What is the maximum Quad DDR read speed and under what conditions?

The maximum Quad DDR read speed is 80 MBps, achieved at 80 MHz clock frequency with VIO = VCC = 3.0–3.6 V. This requires DDR mode enabled, proper setup/hold timing compliance, and use of the Quad DDR Read command (0xED) with valid dummy cycles as defined in the datasheet timing tables.

How does the AutoBoot feature function during power-up?

AutoBoot executes a preconfigured Normal or Quad Read command automatically at power-up or hardware reset, fetching data from a user-defined address (set via configuration register). It eliminates host CPU intervention during initial boot, reducing system startup time and simplifying power sequencing in safety-critical applications.

Is the 1024-byte OTP array one-time programmable or reprogrammable?

The 1024-byte OTP (One-Time Programmable) array is permanently programmable: each bit can be written once and cannot be erased or rewritten. It is used for storing immutable values such as cryptographic keys, device identifiers, or calibration constants, and is protected against accidental overwrite by hardware lock bits.