Infineon Technologies S29GL032N90BFI030

Overview

S29GL032N90BFI030 from Infineon Technologies (formerly Cypress) is a 32 Mbit (4,194,304-byte), 16-bit-wide single-supply MirrorBit Flash memory with 90 ns access time, uniform sector architecture (64 × 64 KB sectors), and Secured Silicon Sector for factory-programmed 16-byte electronic serial number. It operates from 2.7–3.6 V VCC and 1.65–3.6 V VIO, and is used in industrial control firmware storage where deterministic boot code integrity and long-term data retention are required.

For engineers reviewing the S29GL032N90BFI030 datasheet, S29GL032N90BFI030 pinout, S29GL032N90BFI030 application, or S29GL032N90BFI030 equivalent, key selection criteria include JEDEC-compliant command set compatibility, hardware reset (RESET#) and ready/busy (RY/BY#) signaling, 100,000 erase cycles per sector, CFI compliance for host auto-identification, and support for program/erase suspend-resume operations in embedded boot memory systems.

Technical Context

This device implements a 110 nm MirrorBit floating-gate NOR architecture with hot-electron programming and hot-hole assisted erase. It supports both word- and byte-access modes via BYTE# control, and uses VIO-referenced I/O to decouple interface voltage from core VCC.

All command execution-including sector erase, chip erase, program suspend/resume, and secured silicon access-is initiated via eight-cycle write sequences latched internally. Status reporting relies on DQ7 data# polling, DQ6/DQ2 toggle bits, and RY/BY# active-low open-drain output synchronized to CE# transitions.

Key Specifications

Pinout & Package

Package: 48-pin TSOP (Type I, standard thin small outline package), body size 12 × 20 mm, lead pitch 0.5 mm.

Key Features

Applications

Equivalent & Alternatives

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

Compared with S29GL032N90BFI030, the BGA variant trades pin compatibility for density and thermal efficiency, while the Macronix part sacrifices security and standards compliance for lower unit cost-making the original TSOP variant optimal for legacy-compatible, secure, and standards-driven deployments.

Availability

S29GL032N90BFI030 is available at Aetrix Electronics and suitable for industrial PLC firmware storage, medical device boot memory, and automotive body control module applications requiring stable component supply, long-lifecycle support, and guaranteed traceability.

Supply support for S29GL032N90BFI030 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 acquired Cypress Semiconductor in 2020 and maintains the MirrorBit Flash portfolio, delivering high-reliability nonvolatile memory for industrial, automotive, and communications infrastructure.

This device belongs to the S29GL-N family of single-supply NOR Flash memories designed specifically for embedded boot code and firmware storage where data integrity, security, and JEDEC interoperability are mandatory.

FAQ

Does S29GL032N90BFI030 support both x8 and x16 data bus widths?

Yes. The BYTE# pin selects bus width: logic low enables full 16-bit operation (DQ0–DQ15 active), while logic high restricts data transfer to DQ0–DQ7 only for 8-bit microcontroller compatibility. Address lines remain fully functional in both modes, and internal organization is fixed at 2,097,152 × 16-bit words.

What is the function of the WP#/ACC pin, and how does it differ from standard write protection?

WP#/ACC serves dual roles: as WP#, it permanently protects the first or last sector regardless of software protection settings; as ACC, applying 5.5 V (±0.3 V) reduces programming time by ~30% during high-throughput manufacturing. Unlike basic WP pins, this dual-function input retains sector protection even during accelerated programming cycles.

How is the Secured Silicon Sector accessed and locked?

Access requires a specific six-cycle command sequence (0x00, 0xAA, 0x00, 0x55, 0x00, 0x90) followed by read commands to addresses 0x0000–0x00FF. Locking is irreversible: once the 16-byte serial number region is programmed and the lock bit set via command 0x00/0xF0, no further writes or erases are possible-even with valid passwords or elevated voltage.

Can S29GL032N90BFI030 be used in systems requiring AEC-Q100 qualification?

Yes. This specific part number (BFI030 suffix) denotes Infineon's industrial-temperature-grade TSOP variant qualified to AEC-Q100 Grade 2 (−40°C to +105°C ambient). Full qualification documentation-including HTOL, ESD, and temperature cycling reports-is available under Infineon's QM-00012787 certification file for the S29GL-N family.