Infineon Technologies S29GL032N90BFA040

Overview

S29GL032N90BFA040 from Infineon Technologies (formerly Cypress) is a 32-Mbit, 16-bit-wide single-power-supply MirrorBit Flash memory IC with 90 ns access time, organized as 2,097,152 words (4,194,304 bytes), supporting uniform sector architecture (64 × 64 KB sectors), and operating at 2.7–3.6 V VCC and 1.65–3.6 V VIO. It delivers 100,000 erase cycles per sector and 20-year data retention, used in embedded boot code storage for industrial controllers.

For engineers reviewing the S29GL032N90BFA040 datasheet, S29GL032N90BFA040 pinout, S29GL032N90BFA040 application, or S29GL032N90BFA040 equivalent, key selection criteria include JEDEC software compatibility, Secured Silicon Sector with factory-programmed 128-word ESN, hardware reset (RESET#), Ready/Busy# status signaling, and WP#/ACC-accelerated programming for production throughput.

Technical Context

This device implements a command-set-compatible, single-supply NOR Flash architecture using 110 nm MirrorBit process technology. It supports both uniform and boot-sector configurations, with flexible word/byte operation via BYTE# input and VersatileI/O™ control where all I/O levels are referenced to VIO (1.65–3.6 V).

Internally, it integrates hot-hole assisted sector erase and hot-electron injection programming, with on-chip timing generators, VCC detection for write inhibition, and dual status reporting via DQ7 Data# Polling and DQ6 Toggle Bit I. Erase suspend/resume and program suspend/resume enable concurrent read/program operations across non-active sectors.

Key Specifications

Pinout & Package

Package: 48-pin TSOP (Standard Thin Small Outline Package), body size 12 × 20 mm, lead pitch 0.5 mm, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with S29GL032N90BFA040, the BGA variant trades pin accessibility for board area savings and higher thermal performance, while the Macleod alternative sacrifices security features for lower unit cost - neither offers drop-in replacement without design validation.

Availability

S29GL032N90BFA040 is available at Aetrix Electronics and suitable for industrial PLC firmware storage, automotive instrument cluster boot memory, and medical diagnostic equipment BIOS requiring stable component supply and long-term lifecycle support.

Supply support for S29GL032N90BFA040 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 its Flash memory portfolio, delivering high-reliability semiconductor solutions for automotive, industrial, and IoT markets.

This device belongs to the S29GL-N MirrorBit Flash family, designed specifically for embedded systems requiring robust, secure, and field-upgradable non-volatile code storage with deterministic timing and JEDEC interoperability.

FAQ

Is S29GL032N90BFA040 pin-compatible with older S29GL032P variants?

No. The S29GL032N uses a revised pinout versus the legacy S29GL032P series - notably, RESET# is relocated, and WP#/ACC functionality replaces dedicated ACC-only pins. Board-level redesign is required; refer to Figure 1 (page 5) of datasheet 001-98525 Rev. *B for exact TSOP mapping.

Does this device support true 8-bit data bus operation?

Yes. When BYTE# is driven LOW, DQ0–DQ7 become the active 8-bit data bus while DQ8–DQ15 are tri-stated. Address bit A-1 is internally sourced from DQ15, enabling seamless 8-bit microcontroller interfacing without external glue logic.

What is the role of the VIO pin, and can it be tied to VCC?

VIO sets input threshold voltages and output drive levels for all I/O signals. It may be tied to VCC only if VCC remains within 1.65–3.6 V; however, tying VIO to a dedicated 1.8 V rail enables reliable interfacing with low-voltage FPGAs or ASICs while maintaining full 90 ns access performance.

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 permanently locked via fuse blow or persistent register setting. Customer programming requires issuing the Enter Secured Silicon Sector command followed by specific unlock sequences - full procedure is defined in Section 10.4 of datasheet 001-98525 Rev. *B.