Infineon Technologies S29GL256P11FFI020

Overview

S29GL256P11FFI020 from Cypress Semiconductor is a 256 Mbit (32 MB), 3.0 V-only Page Mode Flash memory IC fabricated on 90 nm MirrorBit process technology, featuring 256 uniform 64 Kword (128 Kbyte) sectors, 25 ns page access time, and 110 ns random access time under regulated VCC. 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 128-word electronic serial number - deployed in industrial embedded controllers requiring nonvolatile firmware storage with sector-level protection.

For engineers reviewing the S29GL256P11FFI020 datasheet, S29GL256P11FFI020 pinout, S29GL256P11FFI020 application, or S29GL256P11FFI020 equivalent, key selection considerations include its 64-ball Fortified BGA (LAA064) package, industrial temperature range (–40°C to +85°C), WP#/ACC acceleration input, CFI compliance, and dual-sector protection modes (Persistent and Password).

Technical Context

This device implements a synchronous command-set architecture with hardware reset (RESET#) and Ready/Busy# (RY/BY#) status signaling, enabling deterministic timing control during program/erase suspend-resume operations. Its VersatileI/O™ logic decouples I/O voltage (VIO) from core supply (VCC), allowing interface compatibility with 1.8 V, 2.5 V, or 3.3 V host systems while maintaining internal 3.0 V operation.

The 256-sector uniform architecture supports independent erase cycles per sector (100,000 cycles typical), with dedicated Secured Silicon Sector providing tamper-resistant identity storage. Write Buffer programming achieves 13.5 µs/word effective time when VHH is applied to WP#/ACC, reducing firmware update latency in boot-loader applications.

Key Specifications

Pinout & Package

Package: 64-ball Fortified Ball Grid Array (LAA064), 11 mm × 13 mm, 1.0 mm pitch, Pb-free (F), industrial temperature grade (I).

Key Features

Applications

Equivalent & Alternatives

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

Compared with MX29GL256ELXGI-90G, S29GL256P11FFI020 delivers superior I/O flexibility and security; versus S29GL256S11FFI020, it trades marginal power savings for proven field reliability in legacy industrial deployments where 65 nm qualification is pending.

Availability

S29GL256P11FFI020 is available at Aetrix Electronics and suitable for industrial PLC firmware storage, automotive ECU boot memory, and medical imaging system configuration requiring stable component supply across extended product lifecycles.

Supply support for S29GL256P11FFI020 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 requiring robust, high-density parallel Flash with advanced protection, fast page-mode access, and long-term data integrity - targeting applications where firmware security and field upgradeability are mission-critical.

FAQ

Is S29GL256P11FFI020 pin-compatible with earlier S29GL256N or S29GL256M variants?

No. S29GL256P11FFI020 uses the 64-ball LAA064 BGA package with specific ball assignments (e.g., VIO on A2, RESET# on A6), whereas S29GL256N/M used 56-pin TSOP packages with different pinouts and no VIO pin. Migration requires PCB redesign and firmware timing validation due to differences in AC characteristics and command set enhancements.

What is the function of the WP#/ACC pin when not used for acceleration?

When WP#/ACC is held at VIH (default via internal pull-up), it acts solely as write protect for the highest or lowest address sector depending on model number (02 = lowest sector protected). It does not affect programming speed unless driven to VHH (12 V), which enables unlock-bypass mode and reduces single-word programming time from 60 µs to 13.5 µs.

Does S29GL256P11FFI020 support byte-wide data access?

Yes. With BYTE# asserted 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 is the Secured Silicon Sector programmed and locked?

The Secured Silicon Sector is programmed using standard CFI command sequences (e.g., unlock, program, confirm) via DQ lines. Locking is performed by setting the Lock Register bit (address 0x002E) after programming; once locked, the sector becomes permanently read-only and immune to erase commands, even after power cycles or hardware reset.