Infineon Technologies S29AL016J55TFIR23

Overview

S29AL016J55TFIR23 from Infineon Technologies (formerly Cypress) is a 16 Mbit (2M × 8-bit / 1M × 16-bit), 3.0 V-only boot sector Flash memory with 55 ns access time, AEC-Q100 Grade 1 (–40°C to +125°C) qualification, and flexible sector architecture including one 16 KB, two 8 KB, one 32 KB, and thirty-one 64 KB sectors. It supports in-system programming via standard 3.0 V V_CC, features hardware write protection via WP#, and is used for automotive boot code storage and industrial firmware retention.

For engineers reviewing the S29AL016J55TFIR23 datasheet, S29AL016J55TFIR23 pinout, S29AL016J55TFIR23 application, or S29AL016J55TFIR23 equivalent, key selection criteria include boot-sector configuration (top/bottom), sector lock/unlock capability, CFI compliance, RY/BY# hardware status signaling, and compatibility with JEDEC single-power-supply Flash command sets.

Technical Context

The S29AL016J55TFIR23 implements a command-register-driven state machine for embedded erase and program algorithms, supporting both byte (x8) and word (x16) data interfaces via DQ7–DQ0 or DQ15–DQ0 respectively. Its architecture includes dedicated Secured Silicon Sector (128-word/256-byte) with factory- or customer-programmable 8-word electronic serial number.

Hardware features include RY/BY# for cycle completion detection, RESET# for immediate state-machine reset to read mode, and WP# for boot-sector hardware protection. Erase suspend/resume enables background operations on non-target sectors while erasing, and Unlock Bypass reduces multi-word programming overhead from four to two write cycles.

Key Specifications

Pinout & Package

Package: 48-ball Fine-pitch BGA (VBK048, 0.8 mm pitch, 8.15 mm × 6.15 mm).

Key Features

Applications

Equivalent & Alternatives

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

Compared with S29AL016J70TFIR20 and MX29LV160ETTI-70G, the S29AL016J55TFIR23 uniquely delivers 55 ns boot performance plus Secured Silicon Sector for cryptographic identity binding-critical for automotive safety and medical device traceability where both speed and secure provenance are mandatory.

Availability

S29AL016J55TFIR23 is available at Aetrix Electronics and suitable for automotive engine control units, industrial PLCs, medical imaging bootloaders, and telecom base station configuration memory requiring stable component supply across extended temperature and high-reliability lifecycles.

Supply support for S29AL016J55TFIR23 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 focused on power systems, automotive electronics, and security solutions, with deep expertise in flash memory developed through its acquisition of Cypress Semiconductor.

The S29AL016J series belongs to Infineon's automotive-qualified parallel NOR Flash portfolio, designed specifically for deterministic boot code execution, secure firmware storage, and in-system update resilience in harsh-environment applications.

FAQ

What temperature grades are supported by S29AL016J55TFIR23?

The S29AL016J55TFIR23 is qualified to AEC-Q100 Grade 1 (–40°C to +125°C) and Grade 3 (–40°C to +85°C), with industrial and extended temperature ranges also specified. The 'I' in the part number suffix denotes industrial-grade qualification, and the device meets full automotive reliability testing requirements including HTOL and ESD.

Does S29AL016J55TFIR23 support both x8 and x16 data bus configurations?

Yes - the device supports configurable byte/word operation via the BYTE# pin: logic high enables x16 mode (DQ15–DQ0 active), and logic low enables x8 mode (DQ7–DQ0 active). In x8 mode, DQ15 functions as address bit A–1, allowing full 2M-byte addressing without external demultiplexing.

How is hardware write protection implemented on this Flash device?

Hardware write protection is implemented via the WP# pin, which - when driven to V_IL - permanently locks the boot sector (16 KB) against program and erase operations. This protection operates independently of software commands and remains active during power transitions, preventing corruption during brown-out conditions.

Is the Secured Silicon Sector programmable after device shipment?

Yes - the 256-byte Secured Silicon Sector can be programmed and locked either at the factory or by the end customer using the documented command sequence. Once locked, the sector becomes permanently read-only; unlocking requires physical device replacement, ensuring irreversible identity binding for security-critical applications.