Infineon Technologies S25FL256LDPMFB003

Overview

S25FL256LDPMFB003 from Infineon is a 256-Mbit serial NOR flash memory with quad SPI interface, 133 MHz clock frequency, 3.0 V supply voltage, and 100,000 program/erase cycles endurance, used in boot code storage for industrial microcontroller systems.

For engineers reviewing the S25FL256LDPMFB003 datasheet, S25FL256LDPMFB003 pinout, S25FL256LDPMFB003 application, or S25FL256LDPMFB003 equivalent, key selection criteria include read latency, sector protection granularity, deep power-down current, reset recovery time, and WSON-8 package compatibility with PCB layout constraints.

Technical Context

This device implements a standard Serial Peripheral Interface (SPI) with Quad I/O (QPI) mode support, enabling 4-bit data transfers per clock cycle. It features uniform 4-KB sectors and 64-KB blocks, with software-controlled write protection across configurable address ranges.

The memory uses stacked-die architecture to achieve 256 Mbit density in a single WSON-8 package. It supports both volatile status register writes and non-volatile configuration register programming for persistent settings including hold pin function and reset enable.

Key Specifications

Pinout & Package

Package: 8-pin WSON (5 mm × 6 mm, 0.5 mm pitch), moisture sensitivity level 3, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with S25FL256SDSMFB003 and MX25L25645GMI-13G, the S25FL256LDPMFB003 delivers higher effective bandwidth via QPI and tighter erase timing-critical for real-time firmware updates in industrial control loops and safety-critical boot paths.

Availability

S25FL256LDPMFB003 is available at Aetrix Electronics and suitable for industrial automation, automotive ADAS modules, and medical imaging systems requiring stable component supply and long-term lifecycle assurance.

Supply support for S25FL256LDPMFB003 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.

The S25FL family targets high-reliability embedded systems needing fast, secure, and endurance-optimized serial NOR flash for boot and firmware storage.

FAQ

Is S25FL256LDPMFB003 compatible with legacy SPI controllers?

Yes-it supports standard SPI mode (single I/O) in addition to dual and quad I/O modes. The device defaults to standard SPI on power-up and can be configured for enhanced modes via instruction 38h (Enter 4-byte address mode) and 35h (Enable QPI). No hardware changes are needed for basic read/write operations.

What is the maximum junction temperature during continuous read operation?

The maximum junction temperature is +125°C under specified thermal conditions (θ_JA = 120°C/W, 25°C ambient, 100% duty cycle read). Derating is required above 105°C ambient; thermal simulation using the WSON-8 package's 5 mm × 6 mm footprint is recommended for board-level validation.

Does this device support 4-byte addressing mode?

Yes-4-byte addressing is enabled via instruction 38h and remains active until disabled or reset. This allows full access to the entire 256 Mbit address space without bank switching, essential for firmware images exceeding 16 MB in size.

How is sector protection configured-hardware or software?

Sector protection uses both methods: hardware via /WP pin (global write disable) and software via status register bits (individual 4-KB sector lock). The non-volatile configuration register allows persistent software protection settings across power cycles, eliminating need for re-initialization at boot.