Infineon Technologies S29GL256N11TFIV20

Overview

S29GL256N11TFIV20 from Cypress Semiconductor is a 256 Mbit (33,554,432-byte), 16-bit wide, single-supply 3.0 V Page Flash memory manufactured on 110 nm MirrorBit process. It features 256 × 128 Kbyte sectors, 90 ns access time (at regulated VCC/VIO), 100,000 erase cycles per sector, and Secured Silicon Sector with 256-byte factory-lockable serial ID. Used in industrial control firmware storage where long-term data retention and hardware-based sector protection are required.

For engineers reviewing the S29GL256N11TFIV20 datasheet, S29GL256N11TFIV20 pinout, S29GL256N11TFIV20 application, or S29GL256N11TFIV20 equivalent, key selection criteria include JEDEC-compliant command set, Enhanced VersatileI/O™ voltage flexibility (1.65–3.6 V VIO), page read/write buffer size, CFI compliance for auto-configuration, and hardware reset (RESET#) behavior during power-up sequencing.

Technical Context

This device implements a sector-erase flash architecture with independent program/erase suspend/resume capability, enabling concurrent background operations. It supports both byte (via BYTE#) and word modes, and uses hot-electron injection for programming and hot-hole assisted erase at the sector level.

The Enhanced VersatileI/O™ interface decouples I/O voltage (VIO) from core supply (VCC), allowing operation in mixed-voltage systems. Hardware data protection includes low-VCC detection, persistent sector lock bits, password-protected sector write/erase, and WP#/ACC-accelerated programming for production throughput.

Key Specifications

Pinout & Package

Package: 56-pin TSOP (Thin Small Outline Package), standard footprint compliant with JEDEC MO-142AA. Pinout validated per Cypress Document 002-01522 Rev. *B, Figure 3.1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with S29GL256N11TFIV20, the S29GL256S11TFIV20 offers longer-term supply assurance and lower power but sacrifices 90 ns performance and WP#/ACC acceleration; the MX29GL256FHT2I-90G matches speed and package but requires redesign of security and identification logic due to missing Secured Silicon Sector.

Availability

S29GL256N11TFIV20 is available at Aetrix Electronics and suitable for industrial control firmware storage, medical device boot memory, and automotive infotainment head units requiring stable component supply and legacy design continuity.

Supply support for S29GL256N11TFIV20 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, memory, and connectivity solutions for industrial, automotive, and consumer applications.

The S29GL-N family was designed specifically for high-reliability, parallel-interface NOR flash applications demanding JEDEC compatibility, hardware-based security, and long-term data retention in mission-critical embedded systems.

FAQ

Is S29GL256N11TFIV20 still in production?

No - Cypress officially retired the S29GL-N family and does not recommend it for new designs. However, Aetrix Electronics maintains active inventory and provides last-time-buy support, including traceable lot documentation and extended warranty coverage for legacy system maintenance and repair.

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

The WP#/ACC pin serves dual roles: when pulled low, it hardware-protects the first or last sector; when driven high with VCC applied, it enables accelerated programming current (up to 50 mA) to reduce write time during factory programming - a feature absent in successor S29GL-S devices.

Can S29GL256N11TFIV20 operate with a 1.8 V I/O interface?

Yes - the Enhanced VersatileI/O™ architecture allows VIO to be set between 1.65 V and 3.6 V. At VIO = 1.8 V, all inputs (address, control, DQ) recognize 1.8 V logic levels and outputs drive to 1.8 V-compatible voltage levels, enabling direct connection to 1.8 V microcontrollers without level shifters.

How is the Secured Silicon Sector programmed and locked?

The Secured Silicon Sector is programmed using a specific command sequence (enter secured silicon mode → write 128 words → exit mode). Locking is permanent and irreversible: once the lock bit is set via the "Program Secured Silicon Sector Lock Bit" command, no further writes or erases are possible in that 256-byte region - even with power cycle or RESET# assertion.