Infineon Technologies S29GL032N90FAI032

Overview

S29GL032N90FAI032 from Infineon Technologies (formerly Cypress) is a 32-Mbit, 3.0 V single-power-supply MirrorBit Flash memory organized as 2,097,152 words (4,194,304 bytes), featuring 90 ns access time, 64 KB uniform sector architecture (64 sectors), and 100,000 erase cycles per sector. It operates across VCC = 2.7–3.6 V and VIO = 1.65–3.6 V, and is used in embedded boot code storage for industrial controllers requiring nonvolatile, field-upgradable firmware.

For engineers reviewing the S29GL032N90FAI032 datasheet, S29GL032N90FAI032 pinout, S29GL032N90FAI032 application, or S29GL032N90FAI032 equivalent, key selection criteria include JEDEC software compatibility, Secured Silicon Sector with factory-programmed 128-word ESN, Advanced Sector Protection (Persistent and Password modes), and hardware reset (RESET#) support for safe boot recovery.

Technical Context

This device implements a command-set-compatible, single-supply NOR Flash architecture using 110 nm MirrorBit process technology. It supports 16-bit data bus operation (with BYTE# configurable for 8-bit mode), CFI-compliant identification, and dual-bus voltage control via independent VCC (core) and VIO (I/O) supplies.

Its erase/program control logic includes Erase Suspend/Resume and Program Suspend/Resume capabilities, enabling concurrent read operations during background flash operations. Status reporting uses DQ7 Data# Polling, DQ6/DQ2 toggle bits, and dedicated RY/BY# output - all compliant with JEDEC Standard JESD21-C.

Key Specifications

Pinout & Package

Package: 48-pin TSOP (Type I, standard thin small outline package), 12 × 20 mm body, lead pitch 0.5 mm. Pinout validated per Infineon Document 001-98525 Rev. *B, Figure 1 (S29GL032N models 03/04).

Key Features

Applications

Equivalent & Alternatives

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

Compared with S29GL032N90FAI032, the BGA variant trades pin compatibility for density and thermal efficiency, while the Macronix part omits hardware-enforced security features - making the Infineon device uniquely suited for safety- or identity-critical embedded deployments.

Availability

S29GL032N90FAI032 is available at Aetrix Electronics and suitable for industrial PLCs, automotive BCMs, medical imaging subsystems, and network infrastructure requiring stable component supply, long-lifecycle support, and guaranteed flash endurance.

Supply support for S29GL032N90FAI032 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

Infineon Technologies AG is a German semiconductor manufacturer specializing in power management, automotive ICs, and memory solutions, with global R&D and manufacturing infrastructure.

The S29GL-N family was originally developed by Cypress Semiconductor and continues under Infineon's Flash Memory product line, targeting reliable, secure, and field-upgradable code storage in mission-critical embedded systems.

FAQ

What is the function of the WP#/ACC pin on S29GL032N90FAI032?

The WP#/ACC pin serves dual roles: when held low, it protects the first or last sector from accidental program/erase; when driven high with 5.5 V, it activates accelerated programming mode for faster factory write throughput. Its behavior is defined in the datasheet's Section 8.16 and is independent of software protection settings.

Does S29GL032N90FAI032 support 8-bit data bus operation?

Yes - the BYTE# input selects between 16-bit (BYTE# high) and 8-bit (BYTE# low) data bus modes. In 8-bit mode, DQ0–DQ7 carry data while DQ8–DQ15 are tri-stated; this enables compatibility with legacy 8-bit microcontrollers without external bus multiplexing.

How is the Secured Silicon Sector programmed and locked?

The Secured Silicon Sector is pre-programmed with a unique 8-word Electronic Serial Number at the factory and can be permanently locked via command sequence (see Section 8.15). Once locked, no further writes or erases are possible in that 256-byte region - providing immutable device identity for secure boot and anti-cloning.

Can S29GL032N90FAI032 be used with a 1.8 V I/O interface?

Yes - the VIO supply accepts 1.65–3.6 V, so 1.8 V is within specification. All input thresholds and output drive levels scale with VIO, enabling direct connection to 1.8 V logic without level shifters, provided VCC remains within 2.7–3.6 V for core operation.