Infineon Technologies S29GL256P90FAIR23

Overview

S29GL256P90FAIR23 from Cypress Semiconductor is a 256 Mbit (32 MB) 3.0 V-only Page Flash memory IC fabricated on 90 nm MirrorBit process technology, featuring 256 uniform 64 Kword sectors, 90 ns random access time, and 25 ns page access time. It supports VersatileI/O™ with VIO range 1.65–VCC, includes a 32-word write buffer for accelerated multi-word programming, and integrates Secured Silicon Sector with factory- or customer-programmable 8-word electronic serial number - deployed in industrial embedded controllers requiring nonvolatile firmware storage with sector-level protection.

For engineers reviewing the S29GL256P90FAIR23 datasheet, S29GL256P90FAIR23 pinout, S29GL256P90FAIR23 application, or S29GL256P90FAIR23 equivalent, key selection criteria include VIO-configurable I/O voltage compatibility, CFI compliance for BIOS/UEFI integration, WP#/ACC dual-function pin behavior, and 100,000 erase cycles per sector with 20-year data retention under industrial temperature conditions.

Technical Context

This device implements a synchronous command-set architecture with autoselect, suspend/resume, and unlock bypass modes. Its internal state machine manages embedded program/erase algorithms, while RY/BY# provides real-time status feedback and WRITE STATUS bits report completion without polling overhead.

The VersatileI/O™ interface decouples I/O voltage (VIO) from core supply (VCC), enabling interoperability with 1.8 V, 2.5 V, or 3.3 V logic systems. Sector protection uses persistent lock bits and password-based software methods, with hardware WP#/ACC enabling both sector write protection and VHH-accelerated programming during production.

Key Specifications

Pinout & Package

Package: 64-ball Fortified BGA (LAA064), 11 mm × 13 mm, 1.0 mm pitch, Pb-free (RoHS compliant).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar Page Flash memory applications.

Compared with S29GL256S90TFI01, the BGA variant offers superior thermal performance and smaller footprint but requires rework-capable assembly; versus MX29GL256FHT2I-90G, it delivers certified security and interoperability at modest cost premium for regulated applications.

Availability

S29GL256P90FAIR23 is available at Aetrix Electronics and suitable for industrial PLC firmware storage, automotive infotainment boot code, and medical imaging system configuration requiring stable component supply across long-lifecycle programs.

Supply support for S29GL256P90FAIR23 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 nonvolatile memory and microcontroller solutions for industrial, automotive, and communications markets.

The S29GL-P series was engineered specifically for embedded systems needing robust, pin-compatible Flash upgrades with enhanced security, mixed-voltage I/O, and production-friendly programming acceleration - targeting next-generation control and connectivity platforms.

FAQ

What is the function of the WP#/ACC pin on S29GL256P90FAIR23?

The WP#/ACC pin serves dual roles: at VIL (≤0.8 V), it protects the highest or lowest sector from program/erase; at VHH (11.5–12.5 V), it enables Unlock Bypass mode and accelerates programming throughput by activating internal high-voltage assist circuitry. Internal pull-up ensures safe default VIH state when unconnected.

Does S29GL256P90FAIR23 support byte-wide data access?

Yes - when BYTE# is driven low, the device operates in byte mode: DQ0–DQ7 become active data lines, and DQ15/A-1 functions as the LSB address input (A-1). This enables 8-bit microcontroller interfacing without external data bus multiplexing, preserving full 24-bit addressing capability.

How does the Secured Silicon Sector differ from standard flash sectors?

The Secured Silicon Sector is a dedicated 256-byte region physically isolated from main array; it contains factory- or customer-programmable 16-byte electronic serial number and lock bits. Once locked, its contents cannot be erased or rewritten - even by chip erase - making it suitable for immutable device identity and cryptographic key storage.

Can S29GL256P90FAIR23 operate with VIO = 1.8 V while VCC = 3.3 V?

Yes - the VersatileI/O™ architecture explicitly supports VIO = 1.65–VCC. With VCC = 3.3 V, VIO may be set to 1.8 V to interface directly with 1.8 V logic families. All input thresholds and output drive levels scale accordingly, eliminating need for external level translators in mixed-voltage systems.