Infineon Technologies S29GL256P11FAI022

Overview

S29GL256P11FAI022 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 256 uniform 64 Kword (128 Kbyte) 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 8-word electronic serial number - deployed in industrial embedded controllers requiring nonvolatile code storage and field firmware updates.

For engineers reviewing the S29GL256P11FAI022 datasheet, S29GL256P11FAI022 pinout, S29GL256P11FAI022 application, or S29GL256P11FAI022 equivalent, key selection criteria include sector erase endurance (100,000 cycles), data retention (20 years), CFI compliance, hardware reset (RESET#), and WP#/ACC dual-function pin for sector protection and VHH-accelerated programming during production.

Technical Context

This device implements a synchronous/asynchronous hybrid interface with byte/word configuration controlled by BYTE# input, and uses internal state machines to execute embedded program/erase algorithms. Its VersatileI/O architecture decouples I/O voltage (VIO) from core supply (VCC), enabling interoperability with 1.8 V, 2.5 V, or 3.3 V logic systems while maintaining full 3.0 V core operation.

The 64-ball Fortified BGA (LAA064) package integrates dedicated RY/BY# status output, hardware RESET#, and WP#/ACC pin supporting both sector lock and high-voltage acceleration - critical for deterministic boot-time initialization and high-throughput manufacturing programming.

Key Specifications

Pinout & Package

Package: 64-ball Fortified BGA (LAA064), 11 mm × 13 mm, 1.0 mm pitch, RoHS-compliant Pb-free (F suffix).

Key Features

Applications

Equivalent & Alternatives

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

Compared with MX29GL256FHI-90G and S29GL256S11TFI020, the S29GL256P11FAI022 uniquely delivers VIO-configurable I/O, factory-lockable secured silicon, and BGA packaging - making it the only option among the three qualified for secure, space-constrained, and thermally demanding industrial deployments.

Availability

S29GL256P11FAI022 is available at Aetrix Electronics and suitable for industrial PLC firmware storage, automotive ADAS boot memory, and medical imaging system code storage requiring stable component supply across extended product lifecycles.

Supply support for S29GL256P11FAI022 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-reliability memory, PSoC, and USB solutions for industrial, automotive, and consumer markets.

The S29GL-P series was designed specifically for embedded systems requiring robust, high-density NOR Flash with enhanced security, mixed-voltage interoperability, and production-ready programming acceleration - targeting mission-critical firmware storage.

FAQ

What is the function of the WP#/ACC pin on S29GL256P11FAI022?

The WP#/ACC pin serves two distinct roles: at VIL (≤0.8 V), it protects the highest or lowest address sector from accidental program/erase; at VHH (11.5–12.5 V), it enables Unlock Bypass Program mode, accelerating single-word programming time to 13.5 µs and bypassing standard command sequences during high-volume manufacturing test.

Does S29GL256P11FAI022 support byte-level writes?

No - it does not support true byte-level programming. In byte mode (BYTE# = VIL), only DQ0–DQ7 are active and DQ15/A-1 becomes A-1 address input, but programming still occurs in minimum 16-byte (8-word) chunks via the write buffer or 1-word increments using standard algorithm; no sub-word granularity is available.

How is the Secured Silicon Sector programmed and locked?

The 128-word Secured Silicon Sector is programmed using standard CFI command sequences (e.g., Word Program command at address 0x00000000), then permanently locked via the Sector Protect command with specific unlock-bypass codes. Once locked, the sector becomes read-only and immune to erase commands - verified by reading status register bit PS[0] = 1.

Can S29GL256P11FAI022 operate with VIO = 1.8 V while VCC = 3.3 V?

Yes - the VersatileI/O specification explicitly permits VIO = 1.65–VCC, so VIO = 1.8 V and VCC = 3.3 V is a valid configuration. All input thresholds and output drive levels scale to VIO, enabling direct interface with 1.8 V FPGAs or microcontrollers without external level translation.