Infineon Technologies S25FL164K0XBHIS23

Overview

S25FL164K0XBHIS23 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 capability for embedded code storage.

For engineers reviewing the S25FL164K0XBHIS23 datasheet, S25FL164K0XBHIS23 pinout, S25FL164K0XBHIS23 application, or S25FL164K0XBHIS23 equivalent, key selection criteria include quad-speed read performance, hardware/software write protection flexibility, SFDP compliance, temperature-grade validation, and migration path awareness to S25FL064L.

Technical Context

This device implements a 90 nm floating-gate NOR architecture with SPI-MIO support-enabling Single, Dual, and Quad I/O protocols using only four to six pins (CS#, SCK, IO0–IO3). Its command set is footprint- and instruction-compatible with prior S25FL-K families but adds variable dummy-cycle latency and volatile/non-volatile configuration options.

The memory supports full XIP operation via Continuous and Wrapped Read modes, with status register-controlled protection (top/bottom block lock, pointer-based range, lock-down until power cycle), and integrates Serial Flash Discoverable Parameters (SFDP) per JEDEC JESD216B for host auto-configuration.

Key Specifications

Pinout & Package

Package: 8-lead SOIC (208 mil), SOIC-8 (SOC008) - surface-mount, industry-standard footprint with 1.27 mm pitch, suitable for automated assembly and thermal reliability in extended temperature operation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with S25FL064L and MX25L6433F, the S25FL164K0XBHIS23 offers mature, validated Industrial Plus qualification and integrated security-but lacks the endurance and SFDP enhancements of its successor, making it suitable only for legacy design continuity or cost-sensitive replacements where migration is not feasible.

Availability

S25FL164K0XBHIS23 is available at Aetrix Electronics and suitable for industrial PLC firmware storage, automotive ADAS boot memory, and medical imaging device configuration requiring stable component supply despite end-of-life status.

Supply support for S25FL164K0XBHIS23 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 microcontrollers, connectivity solutions, and non-volatile memory for embedded systems.

The S25FL1-K family was designed for high-reliability, low-pin-count code storage in space-constrained industrial and automotive applications-prioritizing XIP performance, security, and extended temperature operation over raw density scaling.

FAQ

Is S25FL164K0XBHIS23 still recommended for new designs?

No. Cypress explicitly states this part is "Not Recommended for New Design" and recommends migrating to the S25FL064L family. It remains available for legacy production and repair, but lacks long-term roadmap support, updated qualification, or enhanced features like JEDEC JESD216D SFDP or improved ECC.

What package does S25FL164K0XBHIS23 use?

S25FL164K0XBHIS23 uses an 8-lead SOIC package with 208 mil body width (SOC008), pin-compatible with other members of the S25FL1-K family in that variant. This package is RoHS-compliant, surface-mountable, and rated for Industrial Plus temperature operation (–40 °C to +105 °C).

Does this device support hardware write protection?

Yes. It provides dual-layer hardware write protection: the WP# pin enables physical lock of memory regions, and the HOLD# pin allows command suspension. Combined with non-volatile status register bits and OTP security registers, it supports top/bottom block protection, pointer-based range locking, and lock-down until power cycle.

Can S25FL164K0XBHIS23 operate in Quad I/O mode at 108 MHz across its full temperature range?

Yes. The datasheet specifies Quad Read at 108 MHz for both –40 °C to +85 °C and –40 °C to +105 °C (Industrial Plus) ranges, delivering up to 54 MB/s continuous transfer. This performance is guaranteed under VCC = 2.7 V to 3.6 V and includes full timing margin validation per AC electrical characteristics.