Infineon Technologies S29AL016J55TFIR10

Overview

S29AL016J55TFIR10 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 sector protection, and is used for automotive engine control firmware storage.

For engineers reviewing the S29AL016J55TFIR10 datasheet, S29AL016J55TFIR10 pinout, S29AL016J55TFIR10 application, or S29AL016J55TFIR10 equivalent, key selection criteria include boot-block configuration (top/bottom), sector lock/unlock capability, CFI compliance, RY/BY# and RESET# hardware signaling, and TSOP-48 package compatibility with industrial and automotive board layouts.

Technical Context

The S29AL016J55TFIR10 implements a command-register-driven state machine for embedded erase and program algorithms, supporting JEDEC-standard single-power-supply Flash command sets. It uses Fowler-Nordheim tunneling for erase and hot electron injection for programming, with automatic pulse width timing and margin verification.

It integrates hardware data protection including a low-V_CC detector, WP#-controlled boot-sector write protection, and sector group locking via CE#/WE#/OE# timing sequences. Erase suspend/resume enables concurrent read/program operations in non-erasing sectors, enabling true background erase functionality in real-time systems.

Key Specifications

Pinout & Package

The S29AL016J55TFIR10 is packaged in a 48-pin TSOP (Thin Small Outline Package) with 12.0 mm × 20.0 mm body, 0.5 mm lead pitch, and standard JEDEC MO-142AC footprint. Pin functions are electrically identical across TSOP and BGA variants, with dedicated RY/BY#, RESET#, WP#, BYTE#, and sector-select control lines.

Key Features

Applications

Equivalent & Alternatives

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

Compared with S29GL016S55TFIR10 and MX29LV160ETTI-55G, the S29AL016J55TFIR10 uniquely combines AEC-Q100 Grade 1 qualification, Secured Silicon Sector, and full CFI support-making it the only option among the three qualified for safety-critical automotive boot applications requiring both environmental robustness and cryptographic traceability.

Availability

S29AL016J55TFIR10 is available at Aetrix Electronics and suitable for automotive engine control units, industrial PLC firmware storage, and medical diagnostic imaging bootloaders requiring stable component supply across extended product lifecycles.

Supply support for S29AL016J55TFIR10 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 memory solutions with strong focus on functional safety and reliability.

The S29AL016J belongs to Infineon's legacy Cypress Flash memory product line, designed specifically for mission-critical embedded boot applications demanding high temperature resilience, sector-level security, and JEDEC interoperability in automotive and industrial control systems.

FAQ

What is the function of the BYTE# pin on the S29AL016J55TFIR10?

The BYTE# pin selects between 8-bit (x8) and 16-bit (x16) data bus operation: when pulled low, the device operates in byte mode with data on DQ7–DQ0; when high, it operates in word mode with data on DQ15–DQ0. This pin is sampled at power-up and latched internally, determining the initial bus width configuration without requiring software initialization.

Does the S29AL016J55TFIR10 support top-boot or bottom-boot configurations?

Yes - the S29AL016J55TFIR10 supports both top-boot and bottom-boot sector arrangements. The configuration is determined by the state of the A16 address line during power-up or via command sequence, allowing system designers to align the protected 16 KB boot sector with either the highest or lowest memory address range based on bootloader architecture requirements.

How does the Secured Silicon Sector work, and can it be reprogrammed?

The Secured Silicon Sector is a dedicated 256-byte region containing an 8-word (16-byte) electronic serial number and user-programmable lock bits. It can be programmed once by the factory or customer using a specific command sequence, then permanently locked to prevent further writes. Once locked, the ESN remains readable but cannot be altered - ensuring immutable device identity for traceability and anti-cloning.

What is the purpose of the RY/BY# pin, and how is it used in system design?

The RY/BY# pin is an active-low, open-drain output that signals device busy status during program or erase operations. When asserted (low), it indicates an internal operation is in progress; when deasserted (high), the device is ready for the next command or read. In system design, it is commonly wired to a microcontroller interrupt or polled to synchronize firmware updates without relying solely on timeout-based delays.