Infineon Technologies S29GL256P11TFIV10

Overview

S29GL256P11TFIV10 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. It delivers 110 ns random access time and 25 ns page access time, features a 32-word/64-byte write buffer, uniform 64 Kword sectors (256 total), and supports CFI for host compatibility - deployed in industrial embedded systems requiring reliable nonvolatile storage with sector-level protection.

For engineers reviewing the S29GL256P11TFIV10 datasheet, S29GL256P11TFIV10 pinout, S29GL256P11TFIV10 application, or S29GL256P11TFIV10 equivalent, key selection criteria include VIO-compatible I/O voltage scaling (1.65–VCC), WP#/ACC dual-function pin behavior, Secured Silicon Sector programmability, suspend/resume capability during erase/program, and industrial temperature operation (–40°C to +85°C).

Technical Context

This device operates as a parallel-interface NOR Flash with byte/word configuration controlled by BYTE# input and VersatileI/O™ logic that decouples I/O voltage (VIO) from core supply (VCC). Its architecture includes dedicated erase voltage and programming voltage generators, state control logic for command execution, and sector switches enabling independent sector erase.

It implements CFI-compliant command sets including autoselect, unlock bypass, and advanced sector protection via persistent bits or password methods. The Ready/Busy# output provides real-time status of embedded algorithms, while RESET# enables hardware-initiated recovery to read mode without power cycle.

Key Specifications

Pinout & Package

Package: 56-pin TSOP (Standard Thin Small Outline Package, TSO56), lead-free (Pb-free), industrial temperature grade.

Key Features

Applications

Equivalent & Alternatives

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

Compared with S29GL256P11TFIV10, the S29GL256S offers superior power efficiency and endurance at the cost of legacy footprint compatibility, while MX29GL256F provides functional equivalence without secure identity or flexible I/O voltage support - guiding selection based on security, power, and interface requirements.

Availability

S29GL256P11TFIV10 is available at Aetrix Electronics and suitable for industrial automation, automotive electronics, medical imaging, and telecom infrastructure requiring stable component supply and long-term manufacturability.

Supply support for S29GL256P11TFIV10 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, reliable semiconductor solutions for embedded systems, with expertise in nonvolatile memory, microcontrollers, and connectivity.

The S29GL-P series targets mission-critical embedded applications needing robust, pin-compatible NOR Flash with advanced protection, fast parallel access, and industrial-grade reliability - especially where secure boot and field firmware updates are essential.

FAQ

What is the function of the VIO pin on S29GL256P11TFIV10?

VIO sets the voltage reference for all input thresholds and output drive levels, enabling interoperability with 1.8 V, 2.5 V, or 3.3 V host logic while maintaining 3.0 V core operation. It must be connected within 1.65 V to VCC and is not optional - leaving it unconnected violates absolute maximum ratings and may cause undefined behavior.

Can S29GL256P11TFIV10 be used in byte-mode configuration?

Yes - asserting BYTE# low configures the device for 8-bit data bus operation, activating only DQ0–DQ7 and repurposing DQ15/A-1 as the LSB address input (A-1). This mode is fully supported and retains all timing specifications, including 110 ns random access, making it suitable for 8-bit microcontroller interfaces.

How does the Secured Silicon Sector work, and who programs it?

The Secured Silicon Sector is a dedicated 128-word (256-byte) region containing an 8-word electronic serial number. It can be programmed and permanently locked either at the factory (Cypress) or by the end customer using standard CFI commands - no special equipment is required, and locking is irreversible once executed.

Is WP#/ACC pin required to be driven externally, or does it have internal biasing?

WP#/ACC has an internal pull-up resistor, so it defaults to VIH (program/erase enabled, no sector protection) when left unconnected. To activate write protection on the highest-address sector or enable VHH acceleration, it must be actively driven to VIL or VHH respectively - floating is acceptable only for default unprotected operation.