Infineon Technologies S25FL164K0XBHI033

Overview

S25FL164K0XBHI033 from Cypress Semiconductor is a 64-Mbit (8 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, 8-byte unique ID, and Execute-In-Place (XIP) capability for embedded code storage in microcontroller boot applications.

For engineers reviewing the S25FL164K0XBHI033 datasheet, S25FL164K0XBHI033 pinout, S25FL164K0XBHI033 application, or S25FL164K0XBHI033 equivalent, key selection considerations include quad-mode read throughput, industrial-plus temperature support, hardware/software write protection granularity, and migration path to S25FL064L for new designs.

Technical Context

This device implements a 90 nm floating-gate NOR architecture with SPI-MIO (Single/Dual/Quad I/O) command set compatibility to prior FL-K families. It supports JEDEC-standard SFDP for auto-configuration and uses dedicated IO0–IO3 pins with mode-dependent functionality: WP# and HOLD# active in SIO/DIO modes, disabled in QIO mode.

Memory organization comprises 128 uniform 64 kB blocks (8,192 × 4 kB sectors), with non-volatile and volatile status register control, program/erase suspend-resume, and pointer-based block protection (S25FL132K/S25FL164K only). Security includes OTP-locked registers, lock-down-until-power-cycle, and top/bottom relative protection ranges.

Key Specifications

Pinout & Package

Package: 8-lead SOIC (208 mil), body size 5.3 mm × 5.3 mm, standard JEDEC MS-012AC footprint (SOC008).

Key Features

Applications

Equivalent & Alternatives

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

Compared with S25FL164K0XBHI033, S25FL064L offers higher performance and longer endurance but requires design migration, while MX25L6433F provides cost savings at the expense of temperature rating, security depth, and qualification scope.

Availability

S25FL164K0XBHI033 is available at Aetrix Electronics and suitable for industrial PLC firmware storage, automotive ADAS boot memory, and medical imaging device code storage requiring stable component supply amid end-of-life transitions.

Supply support for S25FL164K0XBHI033 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) is a fabless semiconductor company specializing in embedded systems solutions, including microcontrollers, connectivity, memory, and analog ICs.

The S25FL1-K family was designed for high-reliability, code-execution-capable serial flash in resource-constrained embedded systems - emphasizing XIP performance, security, and industrial temperature resilience.

FAQ

Is S25FL164K0XBHI033 recommended for new designs?

No. Cypress explicitly states this part is "Not Recommended for New Design" and identifies S25FL064L as the factory-recommended migration path. While fully functional and supported for existing production, new projects should adopt the S25FL-L family for long-term supply assurance, enhanced specs, and ongoing technical support.

What package does S25FL164K0XBHI033 use?

S25FL164K0XBHI033 uses an 8-lead SOIC package with 208-mil width (standard JEDEC MS-012AC, footprint code SOC008), measuring 5.3 mm × 5.3 mm × 2.1 mm. This package is pin-compatible with other S25FL1-K variants in SOIC-8 format but differs from WSON or BGA options in the same family.

Does it support Execute-In-Place (XIP) operation?

Yes. The device supports efficient XIP via Continuous Read and Wrapped Read modes, with Quad Read achieving 54 MB/s - sufficient to feed ARM Cortex-M or RISC-V cores without bottlenecks. SFDP compliance enables automatic latency and timing configuration, simplifying XIP driver integration across toolchains.

How is security implemented in this flash device?

Security includes three 256-byte OTP security registers, 8-byte unique ID, non-volatile/volatile status register protection bits, hardware WP#/HOLD# inputs, software command locking, and pointer-based block protection (enabling configurable top/bottom protected zones from 4 kB to full memory). Lock-down-until-power-cycle prevents runtime tampering.