Infineon Technologies S25FL132K0XNFB040

Overview

S25FL132K0XNFB040 from Cypress Semiconductor is a 32-Mbit (4 Mbyte), 3.0 V serial NOR flash memory with SPI Multi-I/O interface, supporting Quad Read at 108 MHz (54 MB/s), uniform 4 kB sector and 64 kB block erase, and 100K program-erase cycles. It operates across –40 °C to +105 °C (Industrial Plus), features three 256-byte OTP security registers, and enables Execute-In-Place (XIP) in embedded boot code storage applications.

For engineers reviewing the S25FL132K0XNFB040 datasheet, S25FL132K0XNFB040 pinout, S25FL132K0XNFB040 application, or S25FL132K0XNFB040 equivalent, key selection criteria include quad-mode read bandwidth, sector protection granularity, deep-power-down current (2 µA), SFDP compliance, and migration path to S25FL064L for new designs.

Technical Context

This device implements a 90 nm floating-gate NOR architecture with SPI Multi-I/O (SIO/DIO/QIO) support, using standard SPI clock modes 0 and 3. Its command set is footprint-compatible with prior S25FL-K families but excludes legacy commands like Quad Page Program (32h) and Half-Block Erase (52h).

The memory includes dual protection mechanisms: hardware WP#/HOLD# pins and software-controlled status register bits, plus pointer-based block protection (S25FL132K-specific). Security registers are one-time-programmable and support JEDEC JESD216B SFDP for parameter discovery.

Key Specifications

Pinout & Package

Package: 8-contact WSON (5 mm × 6 mm, WND008), RoHS-compliant, moisture-sensitive level 3.

Key Features

Applications

Equivalent & Alternatives

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

Compared with S25FL132K0XNFB040, S25FL064L offers higher density and speed with backward-compatible footprint, while MX25L3233F lacks OTP and suspend functionality - making it unsuitable for secure or real-time firmware update use cases.

Availability

S25FL132K0XNFB040 is available at Aetrix Electronics and suitable for industrial PLC firmware storage, automotive instrument cluster boot memory, and medical diagnostic device configuration requiring stable component supply despite end-of-life status.

Supply support for S25FL132K0XNFB040 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

Cypress Semiconductor (now part of Infineon Technologies) designs high-reliability non-volatile memory and microcontroller solutions for industrial, automotive, and communications markets.

The S25FL1-K family was engineered to deliver NOR flash performance with SPI simplicity - targeting boot code storage, XIP execution, and secure parameter retention in space- and signal-constrained systems.

FAQ

Is S25FL132K0XNFB040 still recommended for new designs?

No - Cypress explicitly states this part is "Not Recommended for New Design" and designates S25FL064L as the factory-recommended migration path. While fully functional and supported for existing production, new projects should adopt S25FL064L for improved density, speed, SFDP compliance, and long-term supply assurance.

What package does S25FL132K0XNFB040 use, and is it RoHS-compliant?

S25FL132K0XNFB040 uses an 8-contact WSON package (5 mm × 6 mm, type WND008), with lead-free finish and RoHS compliance confirmed in Cypress's official packaging documentation. Moisture sensitivity level is rated at MSL-3, requiring bake conditioning before reflow if exposed beyond floor life.

Does this device support Execute-In-Place (XIP), and what latency is required?

Yes - S25FL132K0XNFB040 supports efficient XIP via Continuous Read and Wrapped Read modes. For Quad Read at 108 MHz, it requires 6 dummy cycles (configurable via status register), enabling rapid instruction fetch with minimal overhead - critical for deterministic boot timing in real-time systems.

How is security implemented, and can the OTP registers be reprogrammed?

Security relies on three 256-byte One-Time-Programmable (OTP) registers, each permanently locked after first write. Additional protection includes hardware WP#/HOLD# pins, non-volatile status register bits, and lock-down-until-power-cycle mode. Once programmed, OTP contents cannot be erased or rewritten - ensuring cryptographic key or calibration data immutability.