Infineon Technologies S29GL128P90FACR20

Overview

S29GL128P90FACR20 from Cypress Semiconductor is a 128 Mbit (16 MB), 3.0 V-only 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 S29GL128P90FACR20 datasheet, S29GL128P90FACR20 pinout, S29GL128P90FACR20 application, or S29GL128P90FACR20 equivalent, key selection criteria include VersatileI/O™ voltage flexibility (VIO = 1.65–VCC), write buffer programming efficiency (64-byte buffer), secured silicon sector with factory-programmable serial number, and CFI-compliant interface for standardized driver integration.

Technical Context

This device implements a synchronous/asynchronous hybrid command-set architecture with hardware reset (RESET#), ready/busy status signaling (RY/BY#), and dual protection modes: persistent sector lock bits and password-based advanced sector protection. It supports byte/word configuration via BYTE# input and operates across regulated VCC (3.0–3.6 V), full VCC (2.7–3.6 V), and VersatileIO VIO (1.65–VCC) supply configurations.

The internal block diagram integrates X/Y decoders, erase/program voltage generators, state control logic, and command register sequencing to enable suspend/resume during program/erase operations. Sector erase time is fixed at 0.5 s per 64 Kword sector, and effective write buffer programming achieves 13.5 µs per word when VHH acceleration is applied to WP#/ACC.

Key Specifications

Pinout & Package

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

Key Features

Applications

Equivalent & Alternatives

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

Compared with S29GL128S90TFI01 and MX29GL128FPTI-90G, the S29GL128P90FACR20 uniquely delivers VersatileI/O flexibility, factory-programmable secured silicon, and full CFI compliance - making it the only option among the three qualified for secure, mixed-voltage, driver-agnostic embedded designs.

Availability

S29GL128P90FACR20 is available at Aetrix Electronics and suitable for industrial PLC firmware storage, automotive body control module boot memory, and medical imaging device configuration requiring stable component supply across extended product lifecycles.

Supply support for S29GL128P90FACR20 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, microcontrollers, and connectivity solutions for industrial, automotive, and IoT markets.

The S29GL-P series was designed specifically for embedded systems requiring robust, pin-compatible NOR Flash with enhanced security, mixed-voltage I/O, and long-term data retention - targeting applications where firmware integrity and field upgradeability are mission-critical.

FAQ

What is the function of the VIO pin on S29GL128P90FACR20?

The VIO pin sets input voltage thresholds and output drive levels independently of VCC, enabling operation with 1.8 V or 3.3 V host interfaces while VCC remains at 3.0–3.6 V. This eliminates level-shifters in mixed-voltage designs and is confirmed in Section 7.3 of the datasheet (Document 002-00886 Rev. *B). It is not a power supply but a reference for I/O logic levels.

Does S29GL128P90FACR20 support both byte and word data widths?

Yes - the BYTE# input selects configuration: at VIL, DQ0–DQ7 are active (8-bit bus) and DQ15/A-1 becomes the LSB address; at VIH, DQ0–DQ15 are active (16-bit bus). This is defined in Table 2-1 (Input/Output Descriptions) and verified in functional operation diagrams on page 16 of the datasheet.

How is sector protection implemented on this device?

It uses two independent methods: persistent lock bits (non-volatile, set via command sequence) and a 16-byte password method (stored in protected registers). Both protect individual 64 Kword sectors. The WP#/ACC pin adds hardware-level protection for top/bottom sectors regardless of software settings - detailed in Sections 8.1–8.5 of the datasheet.

Can the Secured Silicon Sector be programmed after device shipment?

Yes - the 256-byte Secured Silicon Sector can be programmed and locked either at the factory or by the end customer using standard command sequences (see Section 10.2). Once locked, it cannot be unlocked or rewritten, providing permanent, tamper-evident device identification usable for secure boot key binding.