Infineon Technologies S29GL064N90BFA040

Overview

S29GL064N90BFA040 from Infineon Technologies (formerly Cypress) is a 64 Mbit, 3.0 V single-power-supply MirrorBit Flash memory organized as 4,194,304 words (8,388,608 bytes), featuring 90 ns access time, 16-bit data bus with BYTE#-enabled 8-bit mode, and uniform 128 × 64 KB sector architecture. It supports in-system programming, hardware reset, and Secured Silicon Sector with factory-programmed 128-word electronic serial number for secure identification in boot firmware storage.

For engineers reviewing the S29GL064N90BFA040 datasheet, S29GL064N90BFA040 pinout, S29GL064N90BFA040 application, or S29GL064N90BFA040 equivalent, key selection criteria include JEDEC-compliant command set, VIO-supported VersatileI/O™ (1.65–3.6 V), CFI compliance for host auto-detection, and hardware write protection via WP#/ACC pin - all critical for embedded boot code reliability and field-upgrade security.

Technical Context

This device implements a 110 nm MirrorBit floating-gate NAND-like cell architecture enabling simultaneous hot-hole erase per sector and hot-electron programming. Its command-based interface uses standard microprocessor write timing with internal address/data latching, eliminating external address strobes.

The architecture integrates dual status reporting (DQ7 Data# Polling and DQ6 Toggle Bit I) plus RY/BY# output for real-time program/erase cycle monitoring. Sector-level erase suspend/resume and program suspend/resume allow concurrent read/program operations across unprotected sectors - essential for multitasking boot loaders and firmware update agents.

Key Specifications

Pinout & Package

Package: 48-pin TSOP (Type 1, Standard Thin Small Outline Package), lead pitch 0.5 mm, body size 12 × 20 mm - compatible with legacy PCB footprints and automated assembly.

Key Features

Applications

Equivalent & Alternatives

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

Compared with S29GL064S90TFI020 and MX29GL640EHTI-90G, the S29GL064N90BFA040 uniquely delivers 48-pin TSOP compatibility, factory-programmed ESN, and dual-layer sector protection - making it optimal for cost-sensitive, security-aware industrial boot memory where footprint and trust anchor integration are decisive.

Availability

S29GL064N90BFA040 is available at Aetrix Electronics and suitable for industrial PLC firmware storage, automotive instrument cluster boot memory, and medical imaging system configuration requiring stable component supply over extended product lifecycles.

Supply support for S29GL064N90BFA040 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 vertical integration from silicon to system-level security.

This device belongs to the S29GL-N MirrorBit Flash family, engineered specifically for reliable, long-life boot code and firmware storage in harsh-environment applications where data integrity, security, and JEDEC interoperability are mandatory.

FAQ

What is the function of the WP#/ACC pin on S29GL064N90BFA040?

The WP#/ACC pin serves dual roles: as WP# (Write Protect), it asserts logic low to permanently lock the first or last sector against program/erase operations regardless of software protection settings; as ACC (Accelerated Program), it accepts 5.0 V to reduce programming time by ~40% during high-throughput manufacturing. Both functions operate independently of VCC and are electrically validated per datasheet Section 8.16.

Does S29GL064N90BFA040 support 8-bit data bus operation?

Yes - when BYTE# is driven low, the device operates in x8 mode using DQ0–DQ7 only, with A0–A20 addressing 8,388,608 bytes. This mode is fully supported in all command sequences including program, erase, and CFI queries, and is explicitly defined in Section 8.1 of the datasheet for compatibility with 8-bit microcontrollers.

How is the Secured Silicon Sector programmed and locked?

The Secured Silicon Sector (128 words / 256 bytes) is pre-programmed with a unique 8-word electronic serial number at the factory and can be permanently locked via command sequence (see Section 10.4). Once locked, no further writes or erases are possible - even with elevated VPP or ACC voltage - ensuring immutable device identity required for secure boot and anti-counterfeiting.

Can S29GL064N90BFA040 be used in systems with 1.8 V I/O voltage?

Yes - with VIO supplied at 1.65–3.6 V and VCC at 2.7–3.6 V, the device accepts 1.8 V logic levels on all address, control, and data pins. Input thresholds are referenced to VIO, not VCC, enabling direct connection to 1.8 V FPGAs or ASICs without level shifters, as confirmed in Section 2.2 and Table 15-1 of the datasheet.