Infineon Technologies S29GL128P90TAIR20

Overview

S29GL128P90TAIR20 from Cypress Semiconductor is a 128 Mbit (16 MB) single-voltage 3.0 V page-mode NOR Flash memory fabricated on 90 nm MirrorBit process technology, featuring 90 ns random access time, 25 ns page access time, uniform 64 Kword (128 Kbyte) sector architecture (128 sectors), and 100,000 erase cycles per sector - deployed in industrial embedded systems for firmware storage and boot code execution.

For engineers reviewing the S29GL128P90TAIR20 datasheet, S29GL128P90TAIR20 pinout, S29GL128P90TAIR20 application, or S29GL128P90TAIR20 equivalent, key selection criteria include VersatileI/O™ voltage flexibility (VIO = 1.65–VCC), secured silicon sector with factory-programmable 8-word ESN, CFI compliance, and hardware reset (RESET#) with Ready/Busy# status signaling.

Technical Context

This device operates exclusively in single-supply 3.0 V mode (2.7–3.6 V), with input/output voltage levels dynamically controlled by VIO - enabling interoperability with 1.8 V, 2.5 V, or 3.3 V host interfaces without level shifters. Its architecture supports byte/word configuration via BYTE# and integrates dual buffering: an 8-word page read buffer and a 32-word write buffer for accelerated multi-word programming.

Embedded algorithms manage program/erase operations with suspend/resume capability, while persistent and password-based advanced sector protection mechanisms enforce secure firmware partitioning. The Secured Silicon Sector provides 128-word (256-byte) factory- or customer-lockable space for immutable device identification.

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 S29GL128S90TFIR20, the TSOP package offers easier prototyping and rework; versus MX29GL128FPTI-90G, the Cypress part delivers differentiated security and interface adaptability at modest cost premium - critical for industrial and automotive deployments.

Availability

S29GL128P90TAIR20 is available at Aetrix Electronics and suitable for industrial PLCs, automotive ADAS ECUs, medical imaging BIOS, and telecom base station configuration requiring stable component supply, long-term lifecycle assurance, and Pb-free compliance.

Supply support for S29GL128P90TAIR20 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 communications markets.

The S29GL-P series was designed specifically for embedded systems demanding robust, pin-compatible NOR Flash with enhanced security, mixed-voltage I/O, and field-upgradeable firmware storage - targeting applications where data integrity and long-term availability are non-negotiable.

FAQ

What is the function of the VIO pin on S29GL128P90TAIR20?

VIO sets the voltage reference for all input thresholds and output drive levels. It can range from 1.65 V to VCC (2.7–3.6 V), allowing the device to interface directly with 1.8 V, 2.5 V, or 3.3 V logic without external level shifters. This eliminates BOM cost and PCB area overhead in mixed-voltage systems.

Does S29GL128P90TAIR20 support execute-in-place (XIP) operation?

Yes - its 90 ns random access time and asynchronous interface allow microcontrollers to fetch and execute code directly from the flash array without copying to RAM. Verified in real-world implementations with ARM Cortex-M4 and Renesas RX65N MCUs running real-time control loops.

How is the Secured Silicon Sector protected from unauthorized access?

It is protected via two independent methods: factory lock (permanent fuse) or customer lock using either persistent protection bits (non-volatile latch) or password authentication. Once locked, the 128-word region becomes read-only and immune to erase or program commands - even under power cycle or reset.

Can WP#/ACC be used simultaneously for write protection and programming acceleration?

No - WP#/ACC serves dual but mutually exclusive roles: at VIL it protects the top or bottom sector; at VHH it enables unlock-bypass programming acceleration. The pin must be driven to VIH (via internal pull-up or external resistor) during normal read operation to avoid unintended protection or acceleration states.