Infineon Technologies S29GL01GT12DHN020

Overview

S29GL01GT12DHN020 from Infineon is a 1 Gb (128 MB) parallel NOR flash memory using 45-nm MIRRORBIT™ technology, operating from 2.7 V to 3.6 V with 100 ns random access time and 15 ns page access time. It features a 512-byte write buffer, hardware ECC for single-bit correction, uniform 128-KB sector erase, and supports industrial temperature range (–40°C to +85°C). It is used in boot code storage for network routers requiring fast XIP execution and reliable firmware retention.

For engineers reviewing the S29GL01GT12DHN020 datasheet, S29GL01GT12DHN020 pinout, S29GL01GT12DHN020 application, or S29GL01GT12DHN020 equivalent, key selection criteria include parallel ×16 bus interface, 100,000 program/erase cycles, OTP array with four lockable SSR regions, CFI compliance, and support for suspend/resume during embedded operations.

Technical Context

This device implements an asynchronous parallel interface with byte/word boundary addressing and supports both ×8 and ×16 data bus configurations. Its embedded algorithm controller (EAC) manages program, erase, and status monitoring without external intervention, while hardware ECC operates transparently during read operations.

The versatile I/O feature enables VIO operation from 1.65 V to VCC, decoupling I/O voltage from core supply. Sector protection includes volatile (lock bits) and non-volatile (ASP) methods, and the 2048-byte OTP array contains four independently lockable sectors-SSR0 factory-locked, SSR3 password-protected.

Key Specifications

Pinout & Package

Package: 56-pin TSOP (Type I, standard thickness), JEDEC MO-142AC compliant, lead-free and RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with S29GL01GT12DHN020, the TSOP variant offers optimal serviceability and thermal dissipation for industrial control, while the BGA alternatives trade package flexibility for board density or extended temperature operation-no change in command set, CFI structure, or OTP architecture.

Availability

S29GL01GT12DHN020 is available at Aetrix Electronics and suitable for industrial control PLC firmware storage, network router boot image hosting, and medical imaging system configuration requiring stable component supply across multi-year production cycles.

Supply support for S29GL01GT12DHN020 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 memory solutions, with global R&D and manufacturing infrastructure.

The GL-T family targets high-reliability embedded systems needing fast XIP execution and robust firmware storage, combining NOR flash speed with data-flash density and advanced data integrity features.

FAQ

Is S29GL01GT12DHN020 compatible with legacy S29GL series command sets?

Yes, it maintains full command set compatibility with earlier S29GL devices, including CFI query, unlock-bypass, and sector erase sequences. The embedded algorithm controller executes identical opcodes, and status register bit definitions remain unchanged-enabling drop-in replacement in existing designs without firmware modification.

Does the 512-byte write buffer require special initialization before use?

No initialization is required. The buffer activates automatically when a valid buffer write command sequence is issued. After loading up to 512 bytes, a single program command commits all data atomically. Buffer status is monitored via the status register's WRB bit, and partial buffer writes are supported without penalty.

Can SSR3 be unlocked after password protection is enabled?

Yes, SSR3 can be unlocked using the correct 16-byte password written to the SSR password register (address 0x0000_0555), followed by the unlock command sequence. Once unlocked, it remains writable until re-locked; no permanent lock occurs unless explicitly commanded, preserving field-upgrade capability for calibration data.

What is the impact of using VIO = 1.8 V while VCC = 3.3 V?

VIO = 1.8 V is fully supported and reduces I/O switching noise and power consumption without affecting core performance. All timing parameters scale per VIO, with tOE and tCE increasing by ≤10 ns versus VIO = VCC. No level-shifting circuitry is needed, simplifying interface design with 1.8 V FPGAs or microcontrollers.