Infineon Technologies S25FL128LAGNFM010

Overview

S25FL128LAGNFM010 from Infineon is a 128-Mbit serial NOR flash memory with quad SPI interface, 3.0–3.6 V supply voltage, 133 MHz clock frequency, and uniform 256-byte programming page size. It operates in industrial temperature range (−40°C to +85°C) and supports XIP mode for direct code execution from flash in embedded microcontroller systems.

For engineers reviewing the S25FL128LAGNFM010 datasheet, S25FL128LAGNFM010 pinout, S25FL128LAGNFM010 application, or S25FL128LAGNFM010 equivalent, key selection criteria include quad I/O timing compliance, sector protection granularity, erase suspend/resume capability, and JEDEC-standard SFDP register support for auto-configuration.

Technical Context

This device implements a standard Serial Peripheral Interface (SPI) with extended quad I/O (QPI) mode, enabling up to 532 MB/s effective throughput. It features a 64-KB uniform sector architecture with 128 sectors, configurable block protection via status register bits, and hardware write protection using WP# pin control.

The flash uses stacked-gate NOR cell technology with 100K-cycle endurance and 20-year data retention at 85°C. Command set complies with JEDEC JESD216B for SFDP v1.6, supporting dynamic read configuration and volatile/non-volatile configuration register access.

Key Specifications

Pinout & Package

Package: 8-pin SOIC (208 mil, GNFM010 suffix denotes 200-mil wide SOIC-8 with standard pinout).

Key Features

Applications

Equivalent & Alternatives

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

Compared with S25FL128SAGNFM000, this part trades higher clock rate and advanced security for lower cost and simpler qualification; versus MX25L12833FZNI-10G, it delivers superior bandwidth and standardized configuration at the expense of broader third-party driver compatibility.

Availability

S25FL128LAGNFM010 is available at Aetrix Electronics and suitable for industrial automation, automotive body electronics, and medical imaging equipment requiring stable component supply and long-term lifecycle assurance.

Supply support for S25FL128LAGNFM010 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 IoT applications.

This device belongs to the S25FL family of high-performance serial NOR flash memories designed for reliable code storage and execution in resource-constrained embedded systems with demanding environmental and security requirements.

FAQ

What is the minimum erase block size supported by S25FL128LAGNFM010?

The device supports uniform 64 KB sectors as the smallest erasable unit. There is no smaller sub-sector or 4 KB block erase mode. Each of the 128 sectors must be erased as a complete 64 KB unit, and sector protection is applied at this granularity. This simplifies wear leveling but requires careful firmware partitioning to avoid excessive erase cycles on frequently updated regions.

Does S25FL128LAGNFM010 support execute-in-place (XIP) mode?

Yes, it supports true XIP mode via quad I/O interface, allowing microcontrollers to fetch instructions directly from flash without copying to RAM. The device includes dedicated instruction cache lines and optimized read latency (8 ns initial access, then 6 ns per byte in QPI continuous read mode). XIP requires proper address mapping and cache coherency handling in the host MCU's memory controller.

How is write protection implemented on this flash device?

Write protection is implemented through two independent mechanisms: hardware WP# pin control and software-configurable sector protection bits in the status register. The WP# pin provides global lock/unlock of all sectors when asserted low; status register bits allow selective locking of individual 64 KB sectors. Both mechanisms must be disabled to permit programming or erasing of a protected sector.

Is SFDP (Serial Flash Discoverable Parameters) supported, and what version?

Yes, the device fully supports JEDEC JESD216B SFDP v1.6. It exposes a 32-byte parameter table with vendor-specific extensions for quad enable, security features, and timing parameters. Host drivers use SFDP to auto-detect clock timing, command sets, and configuration registers-eliminating hardcoded values and improving portability across flash vendors.