Infineon Technologies S25FL256SAGMFB013

Overview

S25FL256SAGMFB013 from Infineon is a 256 Mb (32 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 65-nm MIRRORBIT™ Eclipse architecture, hybrid or uniform sector erase options (4 KB / 64 KB / 256 KB), and supports AutoBoot at power-up from preselected address.

For engineers reviewing the S25FL256SAGMFB013 datasheet, S25FL256SAGMFB013 pinout, S25FL256SAGMFB013 application, or S25FL256SAGMFB013 equivalent, key selection criteria include military-grade temperature range, Quad DDR read throughput up to 80 MBps, OTP security array (1024 bytes), programmable block protection, and compatibility with S25FL-P family footprints.

Technical Context

This device implements a SPI-MIO interface supporting standard SPI clock modes 0 and 3, plus DDR command execution with dedicated latency cycles. It integrates on-die ECC logic that automatically corrects single-bit errors during read and verifies integrity during program/erase.

The memory array uses hybrid sector architecture-32 physical 4-KB sectors at top/bottom of address space and remaining 64-KB sectors-or uniform 256-KB logical blocks, enabling software migration from legacy S25FL devices while maintaining backward compatibility in boot code and sector protection schemes.

Key Specifications

Pinout & Package

Package: 24-ball FBGA (FAB024), 5 mm × 5 mm, 0.8 mm pitch, Pb-free.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MX25L25673EMI-10G, S25FL256SAGMFB013 delivers military-grade reliability, hardware ECC, and DDR throughput - critical for safety-critical systems; versus S25FL256SAGNFB010, it offers identical functionality in a smaller-area FBGA package optimized for high-density embedded modules.

Availability

S25FL256SAGMFB013 is available at Aetrix Electronics and suitable for aerospace avionics boot storage, military radar signal processing, and tactical radio secure firmware requiring stable component supply across extended temperature and long lifecycle programs.

Supply support for S25FL256SAGMFB013 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.

This part belongs to the FL-S family of SPI Multi-I/O NOR flash devices, engineered specifically for military, aerospace, and critical infrastructure applications demanding extended temperature operation, data integrity, and secure firmware storage.

FAQ

Does S25FL256SAGMFB013 support both 24-bit and 32-bit addressing?

Yes. The device supports extended addressing modes: 24-bit addressing for legacy compatibility (up to 16 MB) and 32-bit addressing for full 32 MB access. Address mode is selected via Configuration Register bit CR3[1], and the default after reset is 32-bit mode when the device detects a 32-bit command sequence.

What is the purpose of the VIO pin, and can it be tied to VCC?

VIO sets the I/O buffer voltage level independently from VCC, enabling interoperability with 1.8 V or 3.3 V host controllers. It may be tied to VCC only if the host operates at the same voltage and timing margins permit - otherwise, separate regulation is required to meet AC timing specs, especially for DDR modes above 66 MHz.

How does AutoBoot function, and can the boot address be changed in-system?

AutoBoot executes a preconfigured Normal or Quad Read command at power-up or hardware reset from an address stored in the One-Time Programmable (OTP) register. This address is programmable once during manufacturing or initial provisioning using the Write Security Register command; it cannot be altered in the field without reprogramming OTP, which is irreversible.

Is the 1024-byte OTP array accessible after factory programming?

Yes - the OTP array remains readable throughout the device's lifetime and supports one-time programming of up to 1024 bytes. Once a bit is programmed from '1' to '0', it cannot be reverted. Reads are unrestricted; writes require issuing the proper Write Enable and Write Security Register commands, and are disabled after OTP lock bits are set.