Infineon Technologies S29GL128P90TFIR20

Overview

S29GL128P90TFIR20 from Cypress Semiconductor is a 128 Mbit (16 MB) single-supply 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 S29GL128P90TFIR20 datasheet, S29GL128P90TFIR20 pinout, S29GL128P90TFIR20 application, or S29GL128P90TFIR20 equivalent, key selection criteria include VersatileI/O™ voltage flexibility (VIO = 1.65–VCC), write buffer programming efficiency (64-byte buffer), secured silicon sector with electronic serial number, and industrial temperature range (–40°C to +85°C).

Technical Context

This device implements a synchronous-compatible asynchronous interface with dual-mode data bus (word/byte via BYTE#), hardware reset (RESET#), and ready/busy status reporting (RY/BY#). It supports CFI-compliant identification and employs advanced sector protection using both persistent lock bits and password-based methods.

Its internal architecture includes an X/Y decoder matrix, erase/program voltage generators, command register state machine, and sector switching logic - enabling suspend/resume during program/erase, unlock bypass acceleration (via WP#/ACC at VHH), and autoselect entry for device ID retrieval.

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 S29GL128P90TFIR20 provides unique device identity and stronger security features at marginally higher standby current; versus MX29GL128FPTI-90G, it offers tighter timing consistency and native Cypress toolchain integration but less multi-vendor ecosystem support.

Availability

S29GL128P90TFIR20 is available at Aetrix Electronics and suitable for industrial PLC firmware storage, automotive instrument cluster boot memory, and medical diagnostic equipment BIOS requiring stable component supply across extended product lifecycles.

Supply support for S29GL128P90TFIR20 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, low-power semiconductor solutions for embedded systems, automotive, and industrial markets.

The S29GL-P series targets cost-sensitive, high-reliability embedded applications demanding robust nonvolatile storage with flexible I/O voltage, fast random access, and secure firmware management capabilities.

FAQ

What is the function of the VIO pin on the S29GL128P90TFIR20?

VIO sets the voltage reference for all input thresholds and output drive levels, supporting 1.65 V to VCC operation. This allows seamless interfacing with SoCs or FPGAs operating at lower I/O voltages (e.g., 1.8 V) while maintaining full 3.0 V core functionality - eliminating level shifters in mixed-voltage designs.

Does the S29GL128P90TFIR20 support execute-in-place (XIP) operation?

Yes - its fast 90 ns random access time and asynchronous parallel interface enable direct CPU instruction fetch from flash memory without copying to RAM. This reduces boot latency and simplifies memory mapping in resource-constrained microcontrollers and application processors.

How does the Secured Silicon Sector differ from standard flash sectors?

The Secured Silicon Sector is a dedicated 128-word (256-byte) region that can be permanently locked after programming a unique 8-word electronic serial number. Unlike regular sectors, it cannot be erased once locked, providing tamper-resistant device identity for secure boot and license enforcement.

Can the S29GL128P90TFIR20 be used in place of older S29GL-P devices with different speed grades?

Yes - pinout and command set are backward compatible across speed grades (e.g., 90 ns, 100 ns, 110 ns). Slower variants may be substituted if system timing margins allow, but not vice versa; the 90 ns grade guarantees worst-case access within tight real-time constraints.