Infineon Technologies S29AS016J70BHI042

Overview

S29AS016J70BHI042 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 supports in-system programming via standard 1.8 V V_CC, features CFI compliance, erase suspend/resume, and hardware write protection for boot sectors - deployed in automotive engine control units and industrial PLC firmware storage.

For engineers reviewing the S29AS016J70BHI042 datasheet, S29AS016J70BHI042 pinout, S29AS016J70BHI042 application, or S29AS016J70BHI042 equivalent, key selection criteria include boot-sector architecture flexibility, 1.65–1.95 V single-supply operation, RY/BY# and RESET# hardware signaling, Secured Silicon Sector with factory-programmable ESN, and JEDEC-compliant command set compatibility.

Technical Context

The S29AS016J70BHI042 implements a sector-erase Flash architecture with eight 8 KB + thirty-one 64 KB sectors (byte mode) or eight 4 Kword + thirty-one 32 Kword sectors (word mode), enabling selective firmware updates without full chip erasure. Its internal state machine executes Embedded Program and Embedded Erase algorithms, automatically timing pulses and verifying cell margin.

Hardware features include dedicated RY/BY# for cycle completion detection, RESET# for immediate state-machine reset to read mode, and WP# for hardware-level protection of outermost boot sectors independent of software lock status. The device uses Fowler-Nordheim tunneling for erase and hot electron injection for program operations.

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 S29AS016J70BHI042, the S29GL01GP11TFI010 requires higher voltage and offers slower access, limiting suitability for 1.8 V automotive systems; the MX25L1606EM2I-12G sacrifices parallel bus determinism and hardware sector protection for footprint reduction - making it incompatible with safety-critical boot architectures.

Availability

S29AS016J70BHI042 is available at Aetrix Electronics and suitable for automotive ECU firmware storage, industrial PLC program retention, and medical device calibration data archiving requiring stable component supply across extended product lifecycles.

Supply support for S29AS016J70BHI042 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 ISO/TS 16949-certified manufacturing.

The S29AS016J belongs to Infineon's automotive-qualified parallel NOR Flash product line, designed specifically for deterministic boot code execution, secure firmware updates, and high-temperature reliability in safety-critical embedded systems.

FAQ

Is S29AS016J70BHI042 pin-compatible with the legacy Am29SL160C?

Yes - the S29AS016J70BHI042 maintains backward pin and software compatibility with the Am29SL160C, including identical TSOP-48 and FBGA-48 footprints and command-set alignment. This enables drop-in replacement in existing designs without PCB or firmware changes, preserving investment in legacy hardware while upgrading to 110 nm process benefits like lower power and improved endurance.

What is the function of the BYTE# pin, and how does it affect data bus width?

The BYTE# pin configures the S29AS016J70BHI042 for either x8 or x16 data bus operation: when BYTE# is driven LOW, DQ0–DQ7 serve as the data bus (x8 mode); when HIGH, DQ0–DQ15 operate as a full 16-bit bus (x16 mode). This dual-width capability allows flexible integration with 8-bit microcontrollers or 16-bit DSPs without external multiplexing logic.

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

The Secured Silicon Sector is a dedicated 128-word (256-byte) region containing a factory-programmable 8-word electronic serial number (ESN). Unlike standard sectors, it can be permanently locked at the factory or by the customer via command sequence, preventing overwrite or erasure. Its contents are accessible only through a specific unlock-and-read command flow, ensuring cryptographic binding of firmware to hardware identity.

Does S29AS016J70BHI042 support both top-boot and bottom-boot configurations?

Yes - the S29AS016J70BHI042 supports configurable boot-block orientation: the eight smallest sectors (8 KB each) can be located at the top (highest address) or bottom (lowest address) of the memory map. This is selected at manufacturing and fixed per part number variant; the 'J' suffix denotes top-boot configuration, enabling compatibility with legacy bootloaders expecting reset vector at 0xFFFF0000.