Infineon Technologies S29GL256P90TFIR10

Overview

S29GL256P90TFIR10 from Cypress Semiconductor is a 256 Mbit (32 MB) single-supply 3.0 V page-mode NOR Flash memory fabricated on 90 nm MirrorBit process technology, featuring 25 ns page access time, 90 ns random access time, uniform 64 Kword (128 KB) sector architecture (256 sectors), and 32-word write buffer for accelerated multi-word programming. It operates across –40°C to +85°C and is used in industrial embedded systems requiring reliable nonvolatile code storage with fast read/program performance.

For engineers reviewing the S29GL256P90TFIR10 datasheet, S29GL256P90TFIR10 pinout, S29GL256P90TFIR10 application, or S29GL256P90TFIR10 equivalent, key selection criteria include its 90 ns speed grade, TSOP-56 package, VersatileI/O™ support (VIO = 1.65–VCC), CFI compliance, and hardware sector protection via WP#/ACC and RESET#.

Technical Context

This device implements a synchronous/asynchronous hybrid interface with dedicated CE#, OE#, and WE# controls, supporting byte/word configuration via BYTE# input and dual-voltage I/O control through VIO. Its internal state machine executes embedded erase and program algorithms, with RY/BY# signaling completion and suspend/resume capability for both operations.

The Secured Silicon Sector provides factory- or customer-programmable 128-word (256-byte) identity space with lockable Electronic Serial Number, while Advanced Sector Protection uses persistent bits and password methods-enabling selective, nonvolatile locking of individual 64 Kword sectors independent of power cycling.

Key Specifications

Pinout & Package

Package: 56-pin Thin Small Outline Package (TSOP-II, standard pinout, Pb-free, industrial temperature).

Key Features

Applications

Equivalent & Alternatives

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

Compared with S29GL256S90TFIR20 and MX29GL256FHTI-90G, the S29GL256P90TFIR10 uniquely combines TSOP-56 manufacturability, VersatileI/O™ voltage adaptability, and factory-lockable silicon ID-making it optimal for industrial OEMs needing field-upgradable, traceable, and easily assembled firmware storage.

Availability

S29GL256P90TFIR10 is available at Aetrix Electronics and suitable for industrial PLC firmware storage, automotive instrument cluster code memory, and medical diagnostic equipment boot ROM requiring stable component supply, long-term lifecycle support, and Pb-free compliance.

Supply support for S29GL256P90TFIR10 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-performance, low-power memory and microcontroller solutions for industrial, automotive, and IoT applications.

The S29GL-P series was engineered specifically for embedded systems demanding robust, pin-compatible NOR Flash with enhanced security, flexible I/O voltage, and production-ready programming acceleration-addressing firmware integrity and field update challenges in mission-critical devices.

FAQ

What is the function of the WP#/ACC pin on S29GL256P90TFIR10?

The WP#/ACC pin serves dual roles: at VIL, it hardware-protects the top or bottom 64 Kword sector from program/erase; at VHH (12 V), it enables Unlock Bypass mode to accelerate production programming throughput. It features an internal pull-up, defaulting to VIH when unconnected-ensuring sector protection unless actively driven low or high.

Does S29GL256P90TFIR10 support byte-level writes?

No-it does not support true byte-level programming. Writes occur in word (16-bit) units, with the BYTE# pin selecting between word mode (DQ0–DQ15 active) and byte mode (DQ0–DQ7 active, A-1 on DQ15). Programming requires issuing commands to the write buffer, with minimum granularity of one word per command sequence-even in byte mode.

How is the Secured Silicon Sector programmed and locked?

The 128-word Secured Silicon Sector is programmed using standard CFI command sequences, then permanently locked via a dedicated lock bit. Once locked, no further writes or erases are possible-even with VHH applied. Locking can be performed at factory or by end-user; the sector retains its contents and lock status across all power cycles and temperature ranges.

Can S29GL256P90TFIR10 operate with VIO = 1.8 V while VCC = 3.3 V?

Yes-VersatileI/O™ allows VIO to be set from 1.65 V to VCC independently. With VCC = 3.3 V, VIO may be 1.8 V, configuring input thresholds and output drive levels for 1.8 V logic interfaces while maintaining full 3.3 V core operation, enabling seamless integration into mixed-voltage SoC buses without level shifters.