Infineon Technologies S29AS016J70BFI042

Overview

S29AS016J70BFI042 from Infineon Technologies (formerly Cypress) is a 16 Mbit (2 M × 8-bit / 1 M × 16-bit), 1.8 V-only boot sector Flash memory with top/bottom configurable boot blocks, 70 ns access time, industrial-plus temperature range (–40 °C to +105 °C), and AEC-Q100 Grade 2 qualification. It operates from a single 1.65–1.95 V supply and supports in-system programming without high-voltage VPP.

For engineers reviewing the S29AS016J70BFI042 datasheet, S29AS016J70BFI042 pinout, S29AS016J70BFI042 application, or S29AS016J70BFI042 equivalent, key selection criteria include boot-sector architecture for firmware storage, sector group protection for secure code updates, CFI compliance for host auto-configuration, and RY/BY#/DQ7 polling for real-time operation status monitoring.

Technical Context

The S29AS016J70BFI042 implements a JEDEC-compliant command-set architecture with embedded algorithms for program (6 µs typical) and erase (sector/whole-chip), supported by hardware features including RY/BY#, RESET#, and WP# pins. Its state machine latches addresses and data internally during write cycles and manages Fowler-Nordheim erase and hot-electron program operations.

It integrates a Secured Silicon Sector (128-word/256-byte) with factory- or customer-programmable 8-word electronic serial number, and supports flexible sector architecture: eight 8 KB + thirty-one 64 KB sectors (byte mode) or eight 4 Kword + thirty-one 32 Kword sectors (word mode), enabling granular firmware partitioning.

Key Specifications

Pinout & Package

Package: 48-ball Fine-Pitch BGA (VDF048, 6.0 mm × 4.0 mm). Pinout validated per Infineon Document 002-01122 Rev. *M, Section 3.3 and Figure 3.3.

Key Features

Applications

Equivalent & Alternatives

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

Compared with S29AS016J70BFI042, the S29GL016S70BHI020 trades secure silicon and 1.8 V operation for broader voltage tolerance, while the MX29LV160ETTI-70G sacrifices endurance, CFI, and dual-boot flexibility to reduce bill-of-materials cost.

Availability

S29AS016J70BFI042 is available at Aetrix Electronics and suitable for automotive ECU design, industrial PLC firmware storage, and medical diagnostic imaging boot memory requiring stable component supply across extended temperature and long-lifecycle programs.

Supply support for S29AS016J70BFI042 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 specializing in power systems, sensors, and memory solutions, with deep expertise in automotive, industrial, and IoT applications.

The S29AS016J series belongs to Infineon's industrial-grade Flash memory portfolio, engineered for reliable in-system firmware storage in safety-critical and thermally demanding environments.

FAQ

Is S29AS016J70BFI042 pin-compatible with earlier Am29SL160C devices?

Yes - it is backward compatible with the 0.32 µm Am29SL160C in both pinout and software command set, enabling drop-in replacement in existing designs without PCB or firmware changes. The 110 nm process improves power efficiency and reliability while maintaining identical mechanical and electrical interface behavior.

What is the function of the BYTE# pin on S29AS016J70BFI042?

The BYTE# pin selects between x8 and x16 data bus configurations: logic low enables 16-bit mode (DQ15–DQ0 active), logic high enables 8-bit mode (DQ7–DQ0 active). This allows flexible integration with microcontrollers supporting either bus width without external multiplexing.

How does the Secured Silicon Sector differ from standard Flash sectors?

The Secured Silicon Sector is a dedicated 256-byte region containing an 8-word electronic serial number and lock bits. Once programmed and locked (at factory or by user), its contents cannot be erased or rewritten - providing immutable device identity and secure key storage distinct from general-purpose firmware sectors.

Can S29AS016J70BFI042 operate without external high-voltage programming supplies?

Yes - it performs all program and erase operations using only the 1.8 V VCC supply. Internally generated and regulated voltages handle Fowler-Nordheim tunneling (erase) and hot-electron injection (program), eliminating need for 5 V or 12 V VPP sources and simplifying system power architecture.