Infineon Technologies S29GL128N10FAI010

Overview

S29GL128N10FAI010 from Cypress Semiconductor is a 128 Mbit (16 MB), 3.0 V single-power-supply NOR Flash memory using 110 nm MirrorBit technology, organized as 8,388,608 words × 16 bits, with 90 ns access time, 25 ns page read time, and 100,000 erase cycles per sector - deployed in boot code storage for industrial controllers requiring deterministic read latency and secure firmware retention.

For engineers reviewing the S29GL128N10FAI010 datasheet, S29GL128N10FAI010 pinout, S29GL128N10FAI010 application, or S29GL128N10FAI010 equivalent, key selection criteria include JEDEC-compliant command set support, Secured Silicon Sector with 128-word ESN, VersatileI/O™ voltage flexibility (1.65–3.6 V), and hardware reset (RESET#) integration for system-level recovery.

Technical Context

This device implements a sector-erase NOR architecture with 128 independent 64 Kword (128 Kbyte) sectors, enabling selective reprogramming without disturbing adjacent firmware regions. It supports both byte (via BYTE#) and word-wide data interfaces and uses hot-electron injection for programming and hot-hole assisted erase.

Command execution relies on internal state control logic with DQ7 polling and RY/BY# status signaling; CFI compliance enables automatic host identification, while Erase/Program Suspend & Resume allows concurrent background operations across protected sectors.

Key Specifications

Pinout & Package

Package: 56-pin TSOP (Standard Thin Small Outline Package), lead-free and RoHS-compliant. Pinout validated per Cypress Document 002-01522 Rev. *B, Figure 3.1 and Pin Description Table (page 7).

Key Features

Applications

Equivalent & Alternatives

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

Compared with S29GL128N10FAI010, the S29GL128S10FAI010 offers improved power efficiency and extended manufacturer support, while the MX29GL128FHI-90G provides cost parity with reduced feature set - making the original suitable only for maintenance of existing designs with secured silicon requirements.

Availability

S29GL128N10FAI010 is available at Aetrix Electronics and suitable for industrial PLC firmware storage, medical device boot code, and automotive body control module applications requiring stable component supply and long-term obsolescence management.

Supply support for S29GL128N10FAI010 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 computing markets.

The S29GL-N family was designed specifically for embedded systems requiring deterministic NOR Flash performance, secure firmware storage, and robust sector-level protection - targeting applications where code execution-in-place (XIP) and field upgradability are mandatory.

FAQ

Is S29GL128N10FAI010 still recommended for new designs?

No. Cypress explicitly states this part is "Not Recommended for New Design" and has been superseded by the S29GL128S series. The S29GL128N10FAI010 remains available for legacy design support and repair, but Infineon does not guarantee long-term supply or provide new technical documentation beyond archived datasheets.

What is the function of the WP#/ACC pin in normal operation?

In normal operation, WP#/ACC serves as write-protect: pulling it low disables programming and erasure of the top or bottom sector regardless of software protection settings. When driven to VCC + 5% (within absolute max rating), it enables accelerated programming mode, reducing single-word program time by approximately 40% during manufacturing test.

Does S29GL128N10FAI010 support 8-bit data bus operation?

Yes. With BYTE# asserted low, the device operates in 8-bit mode: DQ0–DQ7 become the data bus, and DQ8–DQ15 are tri-stated. Address lines remain unchanged, and all command sequences function identically - enabling compatibility with 8-bit microcontrollers without external data bus multiplexing.

How is the Secured Silicon Sector accessed and locked?

The Secured Silicon Sector is accessed via a specific 6-cycle unlock sequence followed by the "Enter Secured Silicon Sector" command (0x80 → 0x10). Once entered, the 128-word region is readable and writable until locked. Locking is performed using the "Program Secured Silicon Sector" command (0x80 → 0x10 → 0x40), after which no further writes or erases are possible - even with power cycling.