Infineon Technologies S25FL128LAGBHM020

Overview

S25FL128LAGBHM020 from Infineon is a 128-Mbit serial NOR flash memory with Quad SPI interface, 3.0–3.6 V supply, 100 MHz clock frequency, and 133 MHz DDR read speed. It supports XIP operation and is used in boot code storage for industrial microcontrollers.

For engineers reviewing the S25FL128LAGBHM020 datasheet, S25FL128LAGBHM020 pinout, S25FL128LAGBHM020 application, or S25FL128LAGBHM020 equivalent, key selection criteria include read latency, sector erase granularity, write endurance, and JEDEC-standard command set compliance.

Technical Context

This device implements a standard Serial Peripheral Interface (SPI) with extended Quad I/O (QPI) mode, supporting single/dual/quad I/O read and program operations. It features a 256-byte page programming buffer and uniform 4-KB sector erase capability.

The memory array is organized as 256 Kbytes × 64 bits, with hardware reset support and configurable write protection via status register bits WPEN and SRP. It complies with JEDEC JESD216B for SFDP table reporting.

Key Specifications

Pinout & Package

Supplied in an 8-pin SOIC-208mil package with standard SPI pinout and no exposed pad.

Key Features

Applications

Equivalent & Alternatives

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

Compared with S25FL128SAGMFI000 and MX25L12833FZNI-10G, the S25FL128LAGBHM020 uniquely delivers 133 MHz DDR read speed and Quad SPI mode in a 3.3 V industrial-grade package-critical for deterministic boot timing in real-time embedded systems.

Availability

S25FL128LAGBHM020 is available at Aetrix Electronics and suitable for industrial PLCs, automotive ADAS modules, and medical imaging equipment requiring stable component supply and long-term lifecycle support.

Supply support for S25FL128LAGBHM020 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 memory solutions for industrial and mission-critical applications.

This device belongs to the S25FL-S family of serial NOR flash memories designed specifically for high-reliability boot code and firmware storage in harsh-environment embedded systems.

FAQ

What is the maximum supported clock frequency for S25FL128LAGBHM020 in DDR mode?

The device does not operate DDR mode at a separate clock frequency; it uses the same 100 MHz SDR clock but transfers two bits per cycle, achieving 133 MHz effective DDR read speed per JEDEC JESD251A specification. This requires host controller support for DDR command sequences and proper PCB layout for signal integrity.

Does S25FL128LAGBHM020 support execute-in-place (XIP) operation?

Yes, it supports XIP via Quad SPI mode with continuous read commands, enabling direct code execution from flash without copying to RAM. The 133 MHz DDR read speed and low initial latency (tSLCH = 6 ns) make it suitable for real-time interrupt response in industrial MCUs.

How is hardware write protection implemented on this device?

Hardware write protection is controlled by the WP# pin: when held low, it locks the status register and prevents writes to protected sectors defined by BP bits. This is independent of software write-enable instructions and remains active across power cycles, ensuring robust protection of boot code.

Is S25FL128LAGBHM020 qualified for automotive applications?

No, this specific variant (S25FL128LAGBHM020) is rated for industrial temperature range (–40°C to +85°C) and is not AEC-Q100 qualified. For automotive use, Infineon offers the S25FL128LAGMFI000 variant with Grade 2 qualification and extended temperature testing.