Infineon Technologies S29GL032N90FFIS40

Overview

S29GL032N90FFIS40 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-compatible command set, and is used for firmware storage in industrial control panels requiring nonvolatile, field-upgradable code retention.

For engineers reviewing the S29GL032N90FFIS40 datasheet, S29GL032N90FFIS40 pinout, S29GL032N90FFIS40 application, or S29GL032N90FFIS40 equivalent, key selection criteria include uniform-sector erase flexibility, Secured Silicon Sector with factory-programmed 128-word ESN, CFI compliance for host auto-configuration, and hardware write protection via WP#/ACC input.

Technical Context

This device implements a command-based, sector-erasable NOR Flash architecture with hot-electron injection programming and hot-hole assisted erase. Its VersatileI/O™ control uses VIO (1.65–3.6 V) to independently set input/output voltage levels, decoupling I/O signaling from core VCC operation.

The internal state machine handles all erase and program operations autonomously after command initiation; status is reported via DQ7 data polling, DQ6 toggle bit, or RY/BY# output. Sector protection includes persistent lock bits and password-protected regions, both managed through dedicated command sequences defined in JEDEC JESD21-C.

Key Specifications

Pinout & Package

Package: 48-pin TSOP (Standard Thin Small Outline Package), Type 1, body size 12.0 × 20.0 mm, lead pitch 0.5 mm.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar Flash memory applications.

Compared with S29GL032N90FFIS40, the TSOP-based alternative offers identical timing and security but in BGA form factor, while the Macronix part sacrifices secure identity and JEDEC command compatibility for lower unit cost-making it suitable only for non-certified, cost-sensitive consumer applications.

Availability

S29GL032N90FFIS40 is available at Aetrix Electronics and suitable for industrial control panels, medical diagnostic instruments, automotive body electronics, and networking infrastructure requiring stable component supply over extended product lifecycles.

Supply support for S29GL032N90FFIS40 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 global semiconductor leader headquartered in Munich, Germany, specializing in power management, automotive MCUs, and secure memory solutions with ISO 9001 and IATF 16949 certification.

This device belongs to the S29GL-N MirrorBit Flash family, designed specifically for reliable, high-endurance firmware and configuration storage in safety-critical embedded systems where data integrity and long-term availability are mandatory.

FAQ

What is the function of the WP#/ACC pin on S29GL032N90FFIS40?

The WP#/ACC pin serves two distinct roles: when pulled low, it hardware-protects the first or last sector from accidental erase/program; when driven high with elevated voltage (VHH ≈ 11.5 V), it accelerates programming time by enabling higher internal PGM voltage. This dual functionality supports both field reliability and factory production throughput without external circuitry.

Does S29GL032N90FFIS40 support 8-bit data bus operation?

Yes, it supports 8-bit mode via the BYTE# input. When BYTE# is asserted low, the device maps DQ0–DQ7 as the data bus and uses DQ15 as A-1 (address bit –1), enabling compatibility with 8-bit microcontrollers. All command sequences and sector boundaries remain unchanged; only the physical data path width is reduced.

How is the Secured Silicon Sector programmed and locked?

The Secured Silicon Sector is pre-programmed at the factory with a unique 8-word (16-byte) Electronic Serial Number and can be permanently locked by issuing the Lock-Down command (00h). Once locked, no further writes or erases are possible-even with valid passwords or VPP applied. Unlocking requires physical device replacement, ensuring irreversible device identity binding.

Can S29GL032N90FFIS40 be used in systems with mixed 1.8 V and 3.3 V logic?

Yes, via VersatileI/O™: VIO (1.65–3.6 V) sets input threshold and output drive level independently of VCC (2.7–3.6 V). With VIO = 1.8 V and VCC = 3.3 V, the device accepts 1.8 V logic inputs and drives 1.8 V–compliant outputs while maintaining full 32 Mbit memory performance and data retention specifications.