Infineon Technologies S29GL256P90FAIR12

Overview

S29GL256P90FAIR12 from Cypress Semiconductor is a 256 Mbit (32 MB), 3.0 V-only page-mode NOR Flash memory fabricated on 90 nm MirrorBit process technology, featuring 90 ns random access time, 25 ns page access time, uniform 64 Kword (128 KB) sector architecture (256 sectors), and 100,000 erase cycles per sector - deployed in industrial embedded systems for firmware storage and boot code execution.

For engineers reviewing the S29GL256P90FAIR12 datasheet, S29GL256P90FAIR12 pinout, S29GL256P90FAIR12 application, or S29GL256P90FAIR12 equivalent, key selection criteria include VIO-supported VersatileI/O™ voltage flexibility (1.65–VCC), write buffer programming efficiency (64-byte burst), secured silicon sector with factory-programmable ESN, and industrial temperature range (–40°C to +85°C) compliance.

Technical Context

This device implements a synchronous-compatible asynchronous interface with dedicated CE#, OE#, and WE# controls, supporting byte/word configuration via BYTE# input and hardware reset via RESET#. Its internal state machine manages embedded program/erase algorithms, suspend/resume capability, and status reporting through RY/BY# output.

The 90 nm MirrorBit cell architecture enables single-supply operation (2.7–3.6 V) with dual-voltage I/O control (VIO = 1.65–VCC), while CFI-compliant command sets and Advanced Sector Protection (persistent lock bits + password method) provide standardized firmware update and security management across host platforms.

Key Specifications

Pinout & Package

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

Key Features

Applications

Equivalent & Alternatives

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

Compared with MX29GL256FHI-90G and S29GL256S90TFI010, the S29GL256P90FAIR12 uniquely delivers VIO-driven voltage flexibility and factory-lockable secured silicon - critical for secure, multi-voltage industrial designs where board space and supply chain traceability are constrained.

Availability

S29GL256P90FAIR12 is available at Aetrix Electronics and suitable for automotive body control modules, industrial PLCs, medical imaging boot systems, and network router firmware storage requiring stable component supply, long-lifecycle support, and industrial-grade reliability.

Supply support for S29GL256P90FAIR12 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 automotive, industrial, and communications markets.

The S29GL-P series targets embedded systems requiring robust, pin-compatible NOR Flash with advanced security, mixed-voltage interoperability, and extended endurance - specifically engineered for firmware storage in safety-critical and field-upgradable devices.

FAQ

What is the function of the VIO pin on the S29GL256P90FAIR12?

The VIO pin sets the voltage reference for all input thresholds and output drive levels, enabling operation across 1.65 V to VCC. This allows direct interfacing with 1.8 V, 2.5 V, or 3.3 V host logic without external level shifters, reducing BOM count and signal integrity risk in mixed-voltage systems.

Does the S29GL256P90FAIR12 support true simultaneous read-while-write operation?

No - it supports suspend/resume of program or erase operations to service urgent read requests, but not concurrent execution. When suspended, the device responds to read commands immediately while holding the algorithm state; resumption restores full programming/erasing without data loss or timing violation.

How is the Secured Silicon Sector protected from unauthorized access?

The 256-byte Secured Silicon Sector can be permanently locked via factory programming or user command. Once locked, its contents - including the 16-byte Electronic Serial Number - become read-only and immune to erase or program commands, even under full device unlock conditions, providing hardware-enforced device identity and anti-counterfeiting.

Can the S29GL256P90FAIR12 be used in place of the older S29GL256N variant?

Yes, with qualification: both share identical density, sector architecture, and pinout in BGA packages, but the P-series adds VersatileI/O™, enhanced write buffer performance, and updated CFI compliance. Migration requires validation of VIO implementation and timing margins due to improved 25 ns page access and tighter AC specifications.