Infineon Technologies S29GL256P11TFI023

Overview

S29GL256P11TFI023 from Cypress Semiconductor is a 256 Mbit (32 MB), 3.0 V-only Page Flash memory fabricated on 90 nm MirrorBit process technology, featuring 256 uniform 128 KB sectors, 25 ns page access time, and 110 ns random access time under regulated VCC (3.0–3.6 V). It supports VersatileI/O™ with VIO range 1.65–VCC, 32-word write buffer, and Secured Silicon Sector with factory- or customer-programmable 256-byte serial ID - deployed in industrial-grade embedded controllers for firmware storage and boot code execution.

For engineers reviewing the S29GL256P11TFI023 datasheet, S29GL256P11TFI023 pinout, S29GL256P11TFI023 application, or S29GL256P11TFI023 equivalent, key selection criteria include sector erase endurance (100,000 cycles), 20-year data retention, CFI compliance, hardware reset (RESET#), and WP#/ACC dual-function pin behavior under VHH acceleration.

Technical Context

This device implements a synchronous/non-volatile page-mode architecture with dedicated X/Y decoders, on-chip voltage generators for erase/program, and state control logic managing command sequences including Autoselect, Suspend/Resume, and Unlock Bypass. Its 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 host buses while maintaining full 3.0 V internal operation.

The 56-pin TSOP package supports byte/word configuration via BYTE# input, with DQ15/A-1 serving as either data bit or LSB address. Sector protection uses persistent lock bits and password methods; RY/BY# provides real-time status of embedded algorithms, and WP#/ACC enables both hardware write protection and VHH-accelerated programming during production.

Key Specifications

Pinout & Package

Package: 56-pin Thin Small Outline Package (TSOP), standard pinout (TSO56), industrial temperature range (–40°C to +85°C).

Key Features

Applications

Equivalent & Alternatives

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

Compared with MX29GL256FHI-90G and S29GL256S11TFI020, the S29GL256P11TFI023 uniquely balances TSOP compatibility, VersatileI/O™ adaptability, and Secured Silicon security - making it optimal for industrial designs requiring drop-in upgrade paths and regulatory traceability without package change.

Availability

S29GL256P11TFI023 is available at Aetrix Electronics and suitable for industrial automation, automotive infotainment, and medical diagnostics requiring stable component supply, long-term lifecycle support, and guaranteed obsolescence management.

Supply support for S29GL256P11TFI023 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 high-performance memory, microcontrollers, and connectivity solutions for industrial, automotive, and consumer markets.

The S29GL-P series was designed specifically for embedded systems demanding robust, high-density NOR flash with advanced security, flexible I/O, and production-ready features like WP#/ACC acceleration and CFI interoperability.

FAQ

What is the function of the WP#/ACC pin in normal operation?

The WP#/ACC pin serves dual roles: at VIH (3.0 V), it enables standard write protection for the highest or lowest sector depending on model number; at VHH (12 V), it activates unlock bypass mode and accelerates programming throughput by ~25%. Internal pull-up ensures default VIH state when unconnected, preventing accidental writes during power-up.

Does S29GL256P11TFI023 support byte-level writes?

No - this device only supports word (16-bit) or byte (8-bit) data width selection via BYTE#, but all programming occurs in minimum 64-byte write buffer increments. Single-word programming is possible but not optimized; effective programming speed is maximized using the full 32-word buffer with proper command sequencing.

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, accessible only through specific command sequences. Once locked (factory or user), its contents become permanently read-only and immune to bulk erase commands - providing cryptographically verifiable device identity essential for anti-counterfeiting and regulatory compliance.

Can RY/BY# be used for interrupt-driven firmware updates?

Yes - RY/BY# is an open-drain output that pulls low during active program/erase operations and floats high-Z when complete. It can directly drive a microcontroller's external interrupt pin, enabling non-polling, deterministic timing for background firmware patching without CPU overhead or timer dependencies.