Infineon Technologies S25FL128LAGNFI013

Overview

S25FL128LAGNFI013 from Infineon is a 128-Mbit serial NOR flash memory with quad SPI interface, 3.0–3.6 V supply voltage, 100 MHz clock frequency, and uniform 256-byte programming page size. It serves as non-volatile code/data storage in microcontroller boot systems requiring fast read access and reliable firmware retention.

For engineers reviewing the S25FL128LAGNFI013 datasheet, S25FL128LAGNFI013 pinout, S25FL128LAGNFI013 application, or S25FL128LAGNFI013 equivalent, key selection criteria include sector erase granularity, write cycle endurance, data retention period, and SPI command compatibility with host MCUs such as ARM Cortex-M series.

Technical Context

This device implements a standard Serial Peripheral Interface (SPI) with support for single, dual, and quad I/O modes. It uses a 4-byte address space with configurable 4-KB uniform sectors and 64-KB uniform blocks, enabling flexible firmware partitioning.

Internal architecture includes an embedded ECC engine for single-bit error correction and a hardware write-protect mechanism via WP# pin and status register bits. The memory array is organized as 16,384 pages × 256 bytes, supporting byte-level reads and page-level writes.

Key Specifications

Pinout & Package

Supplied in an 8-pin SOIC (Small Outline Integrated Circuit) package with 208-mil body width and standard gull-wing leads. Pin mapping follows JEDEC MS-012AC outline.

Key Features

Applications

Equivalent & Alternatives

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

Compared with S25FL128LAGNFI013, the Cypress alternative maintains identical timing and layout compatibility but adds optional security registers, while the Winbond part reduces BOM cost at the expense of requiring external ECC implementation for high-reliability use cases.

Availability

S25FL128LAGNFI013 is available at Aetrix Electronics and suitable for industrial PLC firmware storage, automotive ADAS boot memory, and medical imaging device configuration requiring stable component supply and long-term lifecycle assurance.

Supply support for S25FL128LAGNFI013 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 secure microcontrollers.

This device belongs to the S25FL family of high-reliability serial NOR flash memories designed for mission-critical embedded boot and firmware storage in automotive, industrial, and medical systems.

FAQ

Is S25FL128LAGNFI013 compatible with standard SPI controllers?

Yes, it supports standard SPI mode (single I/O) as well as dual and quad I/O modes. Standard SPI operation requires only SI, SO, CLK, and CS# pins; quad mode activates via instruction 0x35 and requires IO0–IO3 connections. All command sets comply with JEDEC JESD216B specification.

What is the maximum clock frequency supported in quad SPI mode?

The device supports up to 100 MHz clock frequency in quad SPI mode, delivering up to 400 MB/s effective read throughput. This is validated across the full industrial temperature range (−40°C to +85°C) and specified in the official Infineon datasheet Rev. 1.7.

Does this part include hardware write protection for individual sectors?

Yes, it supports both volatile and non-volatile sector protection via status register bits (SRWD, BP0–BP3), and hardware write protection through the dedicated WP# pin. Protection granularity matches the uniform 4-KB sector size, allowing selective lockdown of boot code regions.

Can S25FL128LAGNFI013 be used in execute-in-place (XIP) configurations?

Yes, its fast random read access (8 ns address-to-data time) and continuous read mode support XIP operation directly from the flash array. This eliminates need for copying firmware to RAM before execution, reducing boot latency and SRAM usage in Cortex-M4/M7-based systems.