Infineon Technologies S29GL256S10DHSS50

Overview

S29GL256S10DHSS50 from Infineon is a 256 Mb (32 MB) parallel NOR flash memory IC with 16-bit data bus, fabricated on 65 nm MIRRORBIT™ Eclipse technology. It operates from a single 2.7–3.6 V supply, delivers 90 ns random access time and 15 ns page access time, and integrates hardware ECC for single-bit error correction - deployed in automotive instrument clusters requiring fast XIP boot code execution and robust firmware storage.

For engineers reviewing the S29GL256S10DHSS50 datasheet, S29GL256S10DHSS50 pinout, S29GL256S10DHSS50 application, or S29GL256S10DHSS50 equivalent, key selection criteria include its 128 kB uniform sector erase granularity, 512-byte write buffer throughput (1.5 MBps), Versatile I/O support (1.65–3.6 V), AEC-Q100 Grade 2 qualification (–40°C to +105°C), and CFI-compliant software interface.

Technical Context

This device implements an asynchronous parallel interface with word-aligned addressing (A0–A23), supports page-mode reads (32-byte aligned pages), and uses embedded algorithms for sector erase and buffered programming. Its internal state machine handles command execution, status reporting via RY/BY# pin or status register, and automatic ECC generation/correction during read operations.

The GL-S architecture separates address decoding (X/Y decoders), erase/program voltage generation, and sector protection logic into dedicated blocks. Sector-level lock bits (volatile/non-volatile ASP), OTP array (1024 bytes, two lockable regions), and suspend/resume capability enable deterministic firmware update sequencing in safety-critical automotive ECUs.

Key Specifications

Pinout & Package

Package: 56-pin TSOP (Type I, 400 mil width). Pinout conforms to standard parallel NOR flash layout with CE#, OE#, WE#, RESET#, RY/BY#, and 16-bit bidirectional DQ bus.

Key Features

Applications

Equivalent & Alternatives

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

Compared with S29GL256P10TFIR20, this TSOP-packaged variant offers superior I/O voltage flexibility and automotive qualification; versus MX29GL256FHT2I-90G, it delivers certified ECC, higher endurance, and secure OTP - essential for functional safety and long-lifecycle deployments.

Availability

S29GL256S10DHSS50 is available at Aetrix Electronics and suitable for automotive instrument clusters, industrial PLCs, ADAS camera modules, and medical diagnostic imaging systems requiring stable component supply across extended product lifecycles.

Supply support for S29GL256S10DHSS50 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 security solutions, with global manufacturing and R&D infrastructure.

The GL-S family targets high-reliability embedded systems needing fast XIP execution and robust firmware storage - specifically engineered for automotive, industrial, and medical applications demanding AEC-Q100 qualification and 20-year data retention.

FAQ

Is S29GL256S10DHSS50 pin-compatible with earlier S29GL256N or S29GL256P variants?

No. While functionally similar, S29GL256S introduces revised timing parameters, enhanced ECC handling, and updated command set compatibility. Pinout remains identical for the 56-pin TSOP package, but firmware must be validated against the S29GL256S-specific command table and status register definitions in Rev. *U datasheet.

Does this device support synchronous read mode or DDR interface?

No. S29GL256S10DHSS50 is strictly asynchronous and uses standard parallel NOR timing - no clock input, no DDR capability. It supports only asynchronous read, page-mode read, and command-defined program/erase operations per the CFI specification.

Can the 1024-byte OTP array be reprogrammed after locking?

No. Once a region of the OTP array is locked (via dedicated command sequence), it becomes permanently read-only. The lock is enforced by fuse-based hardware; no unlock command exists, and attempts to rewrite yield status register error flags.

What is the maximum sustained write throughput using the 512-byte buffer?

At rated 1.5 MBps, the device achieves ~333 µs per 512-byte buffer write, including command overhead and internal verification. Real-world throughput drops to ~1.2 MBps under worst-case conditions (e.g., high temperature, marginal VCC), as confirmed in Section 5.7 of the datasheet.