Infineon Technologies S29GL064S90BHI043

Overview

S29GL064S90BHI043 from Infineon is a 64 Mb (8 MB) parallel NOR flash memory with 3.0 V single-supply operation, 70 ns access time, and 128-word write buffer; organized as 4,194,304 × 16-bit words, it features hardware ECC for single-bit correction, secure silicon region with factory-programmed 128-word serial number, and boot-sector architecture (127 × 64 KB + 8 × 8 KB) for embedded firmware storage in industrial control systems.

For engineers reviewing the S29GL064S90BHI043 datasheet, S29GL064S90BHI043 pinout, S29GL064S90BHI043 application, or S29GL064S90BHI043 equivalent, key selection criteria include JEDEC-compliant command set, VIO-referenced I/O (1.65–VCC), AEC-Q100 Grade 2 qualification (–40°C to +105°C), and TSOP-48 package compatibility with legacy board layouts.

Technical Context

This device implements a parallel asynchronous interface with separate CE#, WE#, and OE# controls, supporting both 16-bit-only and byte-configurable (via BYTE#) data bus modes. Its MIRRORBIT™ 65-nm process enables hot-hole erase and hot-electron programming with 100,000 erase cycles per sector and 20-year data retention.

The architecture integrates on-die ECC logic that automatically corrects single-bit errors during read operations and reports multi-bit errors via status register bits. Sector protection includes persistent lock bits, password-protected sectors, and hardware WP#/ACC input that safeguards first/last sectors even during accelerated programming.

Key Specifications

Pinout & Package

Package: 48-lead TSOP (Type I, standard pitch), RoHS-compliant, industrial temperature grade (–40°C to +85°C).

Key Features

Applications

Equivalent & Alternatives

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

Compared with S29GL064S90BHI043, the TSOP-56 variant trades pinout flexibility for thermal performance, while the Macronix alternative sacrifices integrated security and ECC for lower unit cost-neither offers identical combination of boot-sector layout, hardware reset integration, and secure silicon functionality.

Availability

S29GL064S90BHI043 is available at Aetrix Electronics and suitable for industrial PLC firmware storage, automotive ADAS boot memory, and medical imaging system BIOS requiring stable component supply across extended product lifecycles.

Supply support for S29GL064S90BHI043 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 is a German semiconductor manufacturer specializing in power management, automotive ICs, and secure memory solutions, with global manufacturing and quality certification to ISO/TS 16949 and AEC-Q200.

The GL-S MIRRORBIT™ flash product line targets high-reliability embedded systems requiring deterministic timing, long-term data retention, and hardware-enforced security - specifically designed for industrial control, automotive, and medical applications where firmware integrity is non-negotiable.

FAQ

What is the function of the WP#/ACC pin on S29GL064S90BHI043?

The WP#/ACC pin serves dual roles: when held low, it hardware-locks the first or last sector regardless of software protection settings; when driven to 5.5 V during programming, it enables accelerated program mode for faster production-line flashing. This pin operates independently of VCC and remains functional across the full industrial temperature range.

Does S29GL064S90BHI043 support byte-wide data access?

Yes, it supports 8-bit data access when the BYTE# input is asserted low, configuring DQ0–DQ7 as the data bus while DQ8–DQ15 become unused. This mode maintains full command-set compatibility and preserves all protection and ECC features, enabling reuse in legacy 8-bit microcontroller designs without firmware changes.

How does the Secure Silicon Region differ from standard sectors?

The Secure Silicon Region is a dedicated 128-word (256-byte) sector that can be permanently locked at factory or by customer via command sequence. Once locked, no further writes or erases are possible-even with elevated voltage or unlock commands-making it suitable for storing immutable device IDs, cryptographic keys, or calibration constants that must survive field updates.

Can S29GL064S90BHI043 be used in place of older S29GL064N devices?

No, it is not a drop-in replacement: S29GL064S uses updated MIRRORBIT™ 65-nm process with different timing parameters, ECC implementation, and command set extensions (e.g., enhanced secure silicon commands). While pin-compatible in TSOP-48, firmware must be validated for new status register behavior, reset timing, and unlock bypass sequence compliance.