Infineon Technologies S29GL064S70BHA043

Overview

S29GL064S70BHA043 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 serves as boot code storage in industrial controllers requiring deterministic read timing and sector-level erase flexibility.

For engineers reviewing the S29GL064S70BHA043 datasheet, S29GL064S70BHA043 pinout, S29GL064S70BHA043 application, or S29GL064S70BHA043 equivalent, this device supports JEDEC-compliant command sets, byte/word configuration via BYTE# input, and hardware reset (RESET#) for reliable boot recovery in embedded systems with strict power-up sequencing.

Technical Context

This device implements MIRRORBIT™ flash architecture on 65-nm process, enabling simultaneous hot-hole erase and hot-electron programming across uniform 64-KB sectors. It supports both 16-bit and configurable 8-bit data bus modes using BYTE# control, with VIO-referenced I/O (1.65 V to VCC) for mixed-voltage system interfacing.

Hardware features include dedicated WP#/ACC for first/last sector protection independent of software settings, RY/BY# status output for cycle completion detection, and automatic low-VCC write inhibition. Erase/program suspend-resume enables concurrent background operations without halting host execution.

Key Specifications

Pinout & Package

Package: 48-lead TSOP (Type I, standard pitch). Pinout validated per Infineon datasheet Rev. *K, pages 11–12 and Figure 3.1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with S29GL064S90BHA043, the -70 variant delivers tighter timing for deterministic boot latency; versus MX29GL640EHTI-90G, it provides integrated ECC and secure silicon-critical for functional safety and anti-tamper compliance in regulated markets.

Availability

S29GL064S70BHA043 is available at Aetrix Electronics and suitable for industrial PLC firmware storage, automotive ECU boot memory, and medical imaging system BIOS requiring stable component supply across extended product lifecycles.

Supply support for S29GL064S70BHA043 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 microcontrollers, with global manufacturing and quality certification to ISO/TS 16949 and IATF 16949.

The GL-S MIRRORBIT™ flash family targets high-reliability embedded systems needing deterministic parallel interface performance, hardware-based security, and long-term data retention-designed specifically for industrial automation, automotive, and medical applications.

FAQ

Does S29GL064S70BHA043 support both 8-bit and 16-bit data bus configurations?

Yes. The BYTE# input controls bus width: when LOW, DQ0–DQ15 operate as a full 16-bit data bus; when HIGH, only DQ0–DQ7 are active for 8-bit operation while DQ8–DQ15 are tri-stated. This dual-mode capability enables compatibility with both 16-bit microcontrollers and legacy 8-bit systems without external glue logic.

What is the function of the WP#/ACC pin beyond write protection?

The WP#/ACC pin serves two distinct roles: at logic LOW, it hardware-locks the first or last sector regardless of software protection settings; at logic HIGH with elevated voltage (typically 5.5 V), it enables accelerated programming mode to reduce individual word programming time. This dual functionality supports both field safety and factory production efficiency.

How does the internal ECC operate during read cycles?

Internal ECC runs transparently during every read access: the device automatically calculates syndrome bits, detects single-bit errors, and corrects them in real time before data is driven onto DQ lines. No host intervention or additional timing overhead is required, and corrected data appears identical to uncorrupted reads-ensuring seamless integration into existing bootloaders.

Can the Secure Silicon Region be reprogrammed after factory locking?

No. Once the Secure Silicon Region is permanently locked-either at factory or by customer command-the 128-word (256-byte) area becomes read-only and immune to further programming or erasure. This immutability is enforced by dedicated lock bits and physical fuse mechanisms, making it suitable for storing cryptographic keys or device-unique identifiers that must survive entire product lifetimes.