Infineon Technologies S29GL064S90TFI043

Overview

S29GL064S90TFI043 from Infineon is a 64 Mb (8 MB) parallel NOR flash memory with 3.0 V single-supply operation, 70 ns access time, and 65-nm MIRRORBIT™ process technology. It features 128 uniform 64-KB sectors, on-chip ECC for single-bit error correction, and industrial temperature range (–40°C to +85°C). Used in boot code storage for embedded controllers and firmware update storage in industrial gateways.

For engineers reviewing the S29GL064S90TFI043 datasheet, S29GL064S90TFI043 pinout, S29GL064S90TFI043 application, or S29GL064S90TFI043 equivalent, key selection criteria include sector architecture (uniform vs. boot), VIO voltage flexibility (1.65 V to VCC), hardware reset (RESET#) and ready/busy signaling (RY/BY#), and secure silicon region programmability.

Technical Context

This device implements JEDEC-standard command-set-compatible parallel NOR flash architecture with dedicated CE#, WE#, and OE# controls. It supports both 16-bit word and 8-bit byte configurations via BYTE# input, enabling flexible host interface design in microcontroller-based systems.

Hardware-level data integrity is enforced through automatic internal ECC, low-VCC write inhibition, and Erase/Program Suspend-Resume capability. The Secure Silicon Region provides factory- or customer-programmable 256-byte protected space with permanent lock, accessible only via defined command sequences.

Key Specifications

Pinout & Package

48-lead TSOP (Thin Small Outline Package), Type I, 12 mm × 20 mm × 1.2 mm body, standard pitch (0.5 mm), lead finish: matte tin.

Key Features

Applications

Equivalent & Alternatives

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

Compared with S29GL064S90TFI043, the BGA variant offers smaller footprint but limits repairability, while the 80 ns version trades speed for lower cost-both retain identical security, endurance, and software compatibility.

Availability

S29GL064S90TFI043 is available at Aetrix Electronics and suitable for industrial PLC firmware storage, automotive ECU boot memory, and network edge router configuration requiring stable component supply and long-term lifecycle support.

Supply support for S29GL064S90TFI043 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 leader specializing in power management, automotive MCUs, and high-reliability memory solutions, with global manufacturing and quality certification to ISO/TS 16949 and AEC-Q100.

The GL-S MIRRORBIT™ flash product line targets mission-critical embedded systems requiring deterministic boot, secure firmware storage, and extended data retention - optimized for industrial, automotive, and medical applications.

FAQ

Is S29GL064S90TFI043 pin-compatible with older S29GL064N devices?

No. While both are 64 Mb parallel NOR flash, S29GL064S uses updated 65-nm MIRRORBIT™ process and revised pinout: WP#/ACC replaces separate ACC and WP# pins, and RY/BY# replaces earlier RDY/BSY. Electrical and command-set compatibility exists, but physical layout requires redesign.

Does the Secure Silicon Region support customer programming in-system?

Yes. The 256-byte Secure Silicon Region can be programmed either at the factory or in-system using the documented Enter/Exit Secure Silicon Region command sequence. Once locked via PPB bit, further writes are permanently disabled - no voltage or timing override is possible.

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

VIO sets input thresholds and output drive strength for all address, control, and data pins. It must be within 1.65 V to VCC and may equal VCC (3.0 V), but cannot exceed it. Tying VIO = VCC is valid and common for 3.0 V-only systems; decoupling is still required per datasheet guidelines.

How does automatic ECC operate during read cycles?

Internal ECC logic automatically checks every 512-byte block on read. If a single-bit error is detected, it is corrected transparently before data reaches DQ pins; no software intervention or additional timing overhead is required. Uncorrectable multi-bit errors assert DQ0 = LOW and set ECC Status ASO bit.