Infineon Technologies S29JL064J55BHI000

Overview

S29JL064J55BHI000 from Infineon Technologies (formerly Cypress) is a 64-Mb simultaneous read/write flash memory organized as 4M × 16-bit or 8M × 8-bit, operating at 3.0 V only with 55 ns access time in 48-ball FBGA package. It features four-bank architecture enabling zero-latency concurrent read and program/erase operations, secured silicon region with factory-locked 16-byte ESN, and JEDEC-compliant CFI interface - deployed in industrial control firmware storage where background updates and secure boot integrity are required.

For engineers reviewing the S29JL064J55BHI000 datasheet, S29JL064J55BHI000 pinout, S29JL064J55BHI000 application, or S29JL064J55BHI000 equivalent, key selection criteria include simultaneous bank operation capability, 20-year data retention, hardware sector protection, Secured Silicon Region programmability, and compatibility with standard 3.0 V microcontroller bus interfaces.

Technical Context

The device implements a four-bank flash architecture (two 8 Mb + two 24 Mb banks), each with fixed sector sizes (8 KB and 64 KB), allowing any non-busy bank to be read during erase/program of another. Bank grouping is software-configurable via system firmware.

It supports true background operations via Erase Suspend/Resume and uses dual status detection: hardware RY/BY# pin plus software-visible DQ7 polling and DQ6/DQ2 toggle bits. Sector protection includes hardware WP#/ACC pin control and temporary unprotect for in-system reprogramming of locked sectors.

Key Specifications

Pinout & Package

Package: 48-ball Fine-pitch BGA (VBK048 footprint, 6 mm × 8 mm, 0.8 mm pitch).

Key Features

Applications

Equivalent & Alternatives

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

Compared with S29JL064J70BHI000 and S29JL032J55BHI000, the S29JL064J55BHI000 delivers optimal balance of speed, density, and security for new industrial designs requiring background firmware updates and cryptographically bound device identity - without sacrificing JEDEC compatibility or pin-level interoperability.

Availability

S29JL064J55BHI000 is available at Aetrix Electronics and suitable for industrial PLC firmware storage, automotive dual-image boot, medical diagnostic bootloader, and smart grid RTU configuration storage requiring stable component supply and long-term lifecycle support.

Supply support for S29JL064J55BHI000 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, sensor, and memory solutions for industrial, automotive, and IoT applications.

The S29JL064J belongs to Infineon's Simultaneous Read/Write Flash product line, engineered specifically for deterministic firmware update architectures in safety-critical embedded systems where zero-latency background operations and hardware-enforced security are mandatory.

FAQ

What is the function of the WP#/ACC pin on S29JL064J55BHI000?

The WP#/ACC pin serves dual roles: as Write Protect (WP#), it permanently disables programming and erasure of boot sectors 0, 1, 140, and 141 regardless of software protection status; as Acceleration (ACC), it enables faster 7 µs/word programming by activating internal high-voltage charge pumps. The function is determined by voltage level and timing during command sequences - no external resistor or configuration register is required.

How does the Secured Silicon Region differ between factory-locked and customer-lockable versions?

Factory-locked Secured Silicon Region contains a verifiable 16-byte random Electronic Serial Number and is permanently read-only; its lock status is confirmed via DQ6 = 0 in autoselect mode. Customer-lockable versions allow full read/write access until one-time locking, after which DQ6 = 1 and all writes are inhibited. Both variants share identical 256-byte size and physical location but differ in initial content and lock semantics.

Can S29JL064J55BHI000 operate in both x8 and x16 data bus modes?

Yes - the BYTE# pin selects bus width: logic low configures x16 mode (DQ15–DQ0 active), logic high enables x8 mode (DQ7–DQ0 active, with DQ15/A-1 repurposed as address bit A-1). Address mapping and sector boundaries remain identical in both modes; only data path width and pin usage change. No external glue logic is needed for mode switching.

What is the minimum pulse width required for CE#, OE#, and WE# signals during read operations?

Per AC Characteristics table (Section 17.1), the minimum valid pulse width for CE#, OE#, and WE# is 55 ns at tACC = 55 ns speed grade. This ensures reliable setup/hold timing for address and data latching. Pulse widths below this threshold may cause read data corruption or spurious command interpretation, especially under temperature extremes or voltage droop conditions.