Infineon Technologies S29GL032N90FAI020

Overview

S29GL032N90FAI020 from Cypress Semiconductor is a 32-Mbit (4,194,304-byte), 3.0-V single-power-supply MirrorBit Flash memory organized as 2,097,152 words × 16 bits, featuring 90 ns access time, 25 ns page read time, and uniform 64 KB sector architecture with 64 sectors. It supports 16-bit data bus operation with BYTE# control for optional 8-bit mode and is used in embedded boot code storage for industrial controllers and network edge devices.

For engineers reviewing the S29GL032N90FAI020 datasheet, S29GL032N90FAI020 pinout, S29GL032N90FAI020 application, or S29GL032N90FAI020 equivalent, key selection criteria include sector protection granularity, VIO voltage flexibility (1.65–3.6 V), CFI compliance, Secured Silicon Sector availability, and TSOP-48 package compatibility with legacy board layouts.

Technical Context

This device implements a command-set-compatible JEDEC-standard Flash interface with hardware reset (RESET#), ready/busy signaling (RY/BY#), and dual-mode write protection via WP#/ACC input. Its 110 nm MirrorBit process enables hot-hole erase and hot-electron programming with 100,000 erase cycles per sector and 20-year data retention.

The architecture includes an 8-word page read buffer and 16-word write buffer, supporting Program Suspend/Resume and Erase Suspend/Resume operations. Sector protection is implemented via Persistent Sector Protection and Password Sector Protection, both accessible through standardized command sequences without external voltage rails.

Key Specifications

Pinout & Package

Package: 48-pin TSOP (Standard Thin Small Outline Package), compliant with JEDEC MO-142AC, body size 18.4 mm × 12.0 mm × 1.2 mm.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar Flash memory applications.

Compared with S29GL032N90FAI020, the BGA variant offers identical functionality in a smaller footprint but sacrifices reworkability, while the Macronix part trades security and voltage flexibility for lower static power - making the Cypress device optimal for secure, mixed-voltage industrial boot memory.

Availability

S29GL032N90FAI020 is available at Aetrix Electronics and suitable for industrial PLC firmware storage, network router boot memory, and medical diagnostic imaging control requiring stable component supply and long-term lifecycle assurance.

Supply support for S29GL032N90FAI020 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 U.S.-based semiconductor company specializing in high-reliability nonvolatile memory, PSoC programmable systems-on-chip, and USB-C/USB-PD solutions.

The S29GL-N family was designed specifically for embedded boot code and firmware storage in industrial, networking, and medical systems demanding JEDEC-compliant Flash with advanced security, endurance, and thermal robustness.

FAQ

Is S29GL032N90FAI020 compatible with legacy 3.3 V microcontroller buses?

Yes. It operates on a single 2.7–3.6 V VCC supply and supports VIO from 1.65 V to VCC, allowing direct interface with 3.3 V GPIOs without level shifters. The device uses standard JEDEC-compliant command sets and timing, ensuring drop-in compatibility with existing 16-bit parallel Flash designs using CE#, OE#, and WE# controls.

Does this part support in-system programming without high-voltage supplies?

Yes. S29GL032N90FAI020 performs all program and erase operations using only the 3.0 V VCC supply. The WP#/ACC pin accepts accelerated programming voltage externally (optional), but standard operation requires no high-voltage source. Command-based sector erasure and word programming are fully supported in-system via standard microprocessor write timing.

What is the function of the BYTE# pin, and how does it affect data bus operation?

BYTE# selects between 16-bit and dual 8-bit data bus modes. When high, DQ0–DQ15 operate as a full 16-bit bus. When low, DQ0–DQ7 become the lower byte and DQ8–DQ15 the upper byte, enabling byte-level writes without masking. This is essential for systems with 8-bit peripherals or partial-word update requirements in firmware partitions.

How is the Secured Silicon Sector protected, and can it be reprogrammed after locking?

The Secured Silicon Sector is a dedicated 256-byte region programmed and locked at the factory or by the customer using a specific command sequence. Once locked, no further writes or erases are possible - even with elevated VPP or unlock commands. The 16-byte Electronic Serial Number within it is permanently readable and immune to overwrite, providing tamper-resistant device identification.