Infineon Technologies S29GL064S70FHI020

Overview

S29GL064S70FHI020 from Infineon is a 64 Mb (8 MB) parallel NOR flash memory with 3.0 V single-supply operation, 70 ns access time, 128-word write buffer, internal hardware ECC for single-bit correction, and secure silicon region with factory-programmed 128-word electronic serial number. It supports uniform sector architecture (128 × 64 KB sectors), operates across –40°C to +85°C industrial temperature range, and is used in boot code storage for embedded controllers.

For engineers reviewing the S29GL064S70FHI020 datasheet, S29GL064S70FHI020 pinout, S29GL064S70FHI020 application, or S29GL064S70FHI020 equivalent, key selection criteria include JEDEC-compliant command set, VIO-referenced I/O (1.65–VCC), hardware reset (RESET#), Ready/Busy# status signaling, and boot-sector compatibility in system-level firmware storage designs.

Technical Context

This device implements MIRRORBIT™ floating-gate technology on a 65-nm process, enabling simultaneous hot-hole erase and hot-electron programming. Its logical architecture supports 16-bit word-wide data bus with BYTE#-controlled 8-bit mode, and integrates dedicated control lines (CE#, WE#, OE#, RESET#, RY/BY#, WP#/ACC) for deterministic parallel bus timing.

Hardware features include automatic ECC correction during read, Erase/Program Suspend & Resume for concurrent operations, persistent and password-based sector protection, and low-VCC write inhibition. The Secure Silicon Region is permanently locked post-factory or customer-programmed, providing tamper-resistant storage for serial numbers or cryptographic keys.

Key Specifications

Pinout & Package

Package: 48-lead TSOP (Type I, standard pitch, 12 mm × 20 mm × 1.2 mm). Pin-compatible with industry-standard parallel NOR flash footprints.

Key Features

Applications

Equivalent & Alternatives

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

Compared with S29GL064S70FHI020, the 90 ns Infineon variant trades speed for cost while retaining all security and reliability features; the Macronix alternative omits ECC and secure region functionality, requiring software-level error handling and compromising root-of-trust capability.

Availability

S29GL064S70FHI020 is available at Aetrix Electronics and suitable for industrial PLC firmware storage, automotive instrument cluster boot memory, and networking equipment configuration storage requiring stable component supply across extended product lifecycles.

Supply support for S29GL064S70FHI020 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-Q100.

The GL-S family targets high-reliability embedded systems requiring deterministic parallel flash performance, hardware-based data integrity, and secure identity - optimized for boot code, firmware, and configuration storage in automotive, industrial, and medical applications.

FAQ

Does S29GL064S70FHI020 support 8-bit data bus operation?

Yes. When the BYTE# input is asserted low, the device operates in 8-bit mode using only DQ0–DQ7. This mode maintains full command compatibility and preserves all timing specifications, enabling flexible integration with 8-bit microcontrollers or multiplexed bus architectures without external glue logic.

What is the function of the WP#/ACC pin during normal operation?

When held low, WP#/ACC protects the first or last sector from program/erase commands regardless of software protection settings. When driven to accelerated voltage (typically VCC + 2.5 V), it enables faster programming cycles. The pin's dual role eliminates need for separate hardware write-protect and programming-enable signals on the PCB.

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. Once locked, no further writes or erases are possible - even with valid unlock commands. It contains a unique electronic serial number and is designed for immutable device identity or cryptographic key storage.

Is hardware reset (RESET#) required for reliable boot behavior?

Yes. Asserting RESET# asynchronously terminates any active program or erase operation and returns the command interface to known state. In boot-critical systems, tying RESET# to the system power-on reset circuit ensures the flash always begins in ready state, preventing corrupted reads during early firmware fetch sequences.