Infineon Technologies S29GL032N90FFI030

Overview

S29GL032N90FFI030 from Infineon Technologies (formerly Cypress) is a 32-Mbit, 16-bit-wide single-supply MirrorBit Flash memory organized as 2,097,152 words (4,194,304 bytes), featuring 90 ns access time, 25 ns page read time, and uniform sector architecture with sixty-four 32 Kword (64 KB) sectors. It operates from a single 3.0 V supply (2.7–3.6 V), supports JEDEC-compliant command set, and is used for boot code storage and firmware updates in industrial control systems.

For engineers reviewing the S29GL032N90FFI030 datasheet, S29GL032N90FFI030 pinout, S29GL032N90FFI030 application, or S29GL032N90FFI030 equivalent, key selection criteria include uniform sector erase capability, Secured Silicon Sector with factory-programmed 128-word ESN, CFI compliance for host auto-configuration, and hardware reset (RESET#) support for reliable boot initialization.

Technical Context

This device implements a NOR Flash architecture with hot-electron injection programming and hot-hole assisted sector erase. It uses a 110 nm MirrorBit process and supports both word- and byte-access modes via BYTE# input, enabling flexible integration into 8-bit or 16-bit microcontroller buses.

The command interface relies on standard microprocessor write timing with internal latching of addresses and data. Status monitoring is supported via DQ7 Data# Polling, DQ6/DQ2 toggle bits, and RY/BY# output - all synchronized to CE# and OE# control signals without external clocks.

Key Specifications

Pinout & Package

Package: 48-pin TSOP (Type I, standard thin small outline package), 12 × 20 mm body, lead pitch 0.5 mm. Pinout conforms to JEDEC MO-142AC standard for 48-pin Flash devices.

Key Features

Applications

Equivalent & Alternatives

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

Compared with S29GL032N90FFI030, the BGA variant trades serviceability for density and thermal performance, while the Micron alternative sacrifices secure identity and host-agnostic configuration for lower unit cost - making the original TSOP part optimal for field-serviceable industrial gateways and secure boot-critical systems.

Availability

S29GL032N90FFI030 is available at Aetrix Electronics and suitable for industrial PLC firmware storage, automotive instrument cluster boot memory, and medical diagnostic equipment BIOS requiring stable component supply across extended product lifecycles.

Supply support for S29GL032N90FFI030 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 acquired Cypress Semiconductor in 2020 and maintains its Flash memory portfolio, delivering high-reliability non-volatile solutions for automotive, industrial, and IoT applications.

The S29GL-N family was designed specifically for embedded systems requiring deterministic boot performance, secure firmware storage, and long-term data integrity - targeting applications where code authenticity and field upgrade resilience are mandatory.

FAQ

What is the function of the WP#/ACC pin on S29GL032N90FFI030?

The WP#/ACC pin serves dual functions: when held low, it hardware-protects the first or last memory sector against accidental writes or erases; when driven to accelerated voltage (V_ACC ≈ 11.5 V), it reduces programming time during factory production. Its behavior is model-dependent and does not require external circuitry for standard 3.0 V operation.

Does S29GL032N90FFI030 support byte-level writes?

No - it supports only word-level (16-bit) writes in x16 mode or byte-level access only via BYTE#-controlled multiplexing of DQ0–DQ7. True byte programming is not implemented; all write operations target full 16-bit words, and partial writes require full-word read-modify-write sequences.

How is the Secured Silicon Sector programmed and locked?

The Secured Silicon Sector is pre-programmed with a unique 8-word Electronic Serial Number at the factory and can be permanently locked using a dedicated command sequence (0x60 → 0xD0). Once locked, no further writes or erases are possible in that 128-word region - even with elevated V_ACC - ensuring immutable device identity for secure boot verification.

Can S29GL032N90FFI030 operate with a 1.8 V I/O interface?

Yes - when VIO is supplied at 1.65–1.95 V, all input thresholds and output drive levels conform to 1.8 V logic standards. This allows direct connection to 1.8 V microcontrollers without level-shifting circuitry, provided VCC remains within 2.7–3.6 V for core Flash operation.