Infineon Technologies S25FL256LAGNFV013

Overview

S25FL256LAGNFV013 from Infineon is a 256-Mbit (32-MB) serial NOR flash memory with Quad SPI interface, 133 MHz clock frequency, and 3.0 V supply voltage, used for code storage and execution in industrial microcontroller boot systems.

For engineers reviewing the S25FL256LAGNFV013 datasheet, S25FL256LAGNFV013 pinout, S25FL256LAGNFV013 application, or S25FL256LAGNFV013 equivalent, key selection criteria include read latency, sector erase granularity, write endurance, and industrial temperature range compliance.

Technical Context

This device implements a standard Serial Peripheral Interface (SPI) with Quad I/O (QPI) mode support, enabling up to 532 MB/s effective throughput. It features uniform 4-KB sectors and supports both single- and quad-input fast read commands with configurable dummy cycles.

The memory includes hardware write protection via WP# pin and software-controlled block protection (BP0–BP2 bits), plus a 64-byte one-time programmable (OTP) area for secure configuration storage.

Key Specifications

Pinout & Package

Package: 8-pin SOIC (208 mil, 5.2 mm × 5.2 mm, 1.27 mm pitch).

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY15B104QN-PSOC and S25FL512SAGMFI000, the S25FL256LAGNFV013 balances cost-effective 256-Mbit density, industrial temperature support, and proven QSPI compatibility-making it optimal for fixed-function embedded systems where firmware size and thermal robustness are primary constraints.

Availability

S25FL256LAGNFV013 is available at Aetrix Electronics and suitable for industrial PLCs, medical imaging devices, automotive ADAS modules, and smart grid gateways requiring stable component supply and long-term lifecycle assurance.

Supply support for S25FL256LAGNFV013 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 part belongs to the Semper™ family of high-reliability NOR flash memories, designed specifically for mission-critical embedded systems demanding data integrity, security, and extended temperature operation.

FAQ

Is S25FL256LAGNFV013 compatible with standard SPI controllers?

Yes. It supports legacy SPI modes (single I/O) and enhanced Quad SPI (QPI) mode. Standard SPI controllers can operate it in single-I/O mode using SO, SI, CS#, and CLK pins. QPI mode requires controller support for four-wire bidirectional data transfer and specific command sequences.

What is the purpose of the HOLD# pin?

HOLD# pauses ongoing serial communication without resetting internal state or losing command context. When asserted low during a read or write sequence, the device halts data transfer on the next clock edge and releases the bus, allowing other peripherals to share the SPI lines temporarily.

Does this device support execute-in-place (XIP) operation?

Yes. The S25FL256LAGNFV013 supports XIP via Quad SPI mode with fast read commands (e.g., 0xEB with 8 dummy cycles). Its low read latency and uniform sector architecture enable direct CPU instruction fetch from flash, eliminating need for RAM-based code loading in many MCU designs.

How is the 64-byte OTP area programmed and protected?

The OTP area is programmed using standard write commands (0x02 for page program) to address range 0x00000000–0x0000003F. Once any byte is written, the entire 64-byte block becomes permanently read-only. No erase or reprogram is possible after first write, ensuring cryptographic key or calibration data immutability.