Infineon Technologies S29AS016J70BHI043

Overview

S29AS016J70BHI043 from Infineon Technologies (formerly Cypress) is a 16 Mbit, 1.8 V-only boot sector Flash memory organized as 2 M × 8-bit or 1 M × 16-bit, with top/bottom boot architecture, 70 ns access time, and industrial-plus temperature range (–40 °C to +105 °C). It supports in-system programming via standard 1.8 V supply only-no VPP required-and integrates hardware write protection, sector group locking, and erase suspend/resume for embedded firmware storage in automotive ECUs and industrial controllers.

For engineers reviewing the S29AS016J70BHI043 datasheet, S29AS016J70BHI043 pinout, S29AS016J70BHI043 application, or S29AS016J70BHI043 equivalent, key selection criteria include boot sector configuration (top/bottom), JEDEC CFI compliance, RY/BY# and RESET# hardware signaling, Secured Silicon Sector accessibility, and FBGA-48 (VBK048/VDF048) package compatibility with high-density PCB layouts.

Technical Context

The S29AS016J70BHI043 implements a command-register-driven state machine for Embedded Erase and Embedded Program algorithms, enabling automatic pulse-width control and margin verification during program/erase cycles. It uses Fowler-Nordheim tunneling for erase and hot electron injection for programming, with on-chip voltage generators eliminating external high-voltage requirements.

Its flexible sector architecture comprises eight 8 KB (byte mode) or 4 Kword (word mode) boot sectors plus thirty-one 64 KB / 32 Kword main sectors, supporting independent locking via hardware WP# and software sector group protection. The device delivers true background operation via Erase Suspend/Erase Resume, allowing read/program access to non-erasing sectors during active erase.

Key Specifications

Pinout & Package

Package: 48-ball Fine-Pitch BGA (VBK048: 8.15 mm × 6.15 mm; VDF048: 6.0 mm × 4.0 mm). Pinout validated per Infineon Document 002-01122 Rev. *M, Figures 3.2 and 3.3.

Key Features

Applications

Equivalent & Alternatives

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

Compared with S29AS016J70BHI043, the S29GL016S70BHI020 trades 1.8 V operation and security features for broader legacy voltage compatibility, while the MX29GL160EHT2I-70G offers CFI at lower cost but omits critical hardware protections needed for safety-critical boot storage.

Availability

S29AS016J70BHI043 is available at Aetrix Electronics and suitable for automotive ECU development, industrial PLC firmware upgrades, and medical imaging system boot memory applications requiring stable component supply, long-term lifecycle support, and AEC-Q100 qualified Flash.

Supply support for S29AS016J70BHI043 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 ICs, and memory solutions with emphasis on reliability and industrial-grade performance.

The S29AS016J belongs to Infineon's legacy Cypress Flash memory portfolio, designed specifically for robust, low-voltage boot code storage in safety-critical embedded systems where data integrity, long retention, and hardware-level protection are mandatory.

FAQ

Is S29AS016J70BHI043 pin-compatible with earlier Am29SL160C devices?

Yes - it is backward compatible with the 0.32 µm Am29SL160C in both pinout and software command set, manufactured on 110 nm process for improved power efficiency and reliability. The FBGA and TSOP packages maintain identical ball/pin assignments for CE#, OE#, WE#, DQ, and address lines, enabling drop-in replacement in existing layouts without redesign.

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

The BYTE# pin selects between x8 and x16 data bus configurations: when asserted low, the device operates in 16-bit mode with DQ15–DQ0 active; when high, it operates in 8-bit mode with DQ7–DQ0 active and DQ15 repurposed as A–1 (address bit –1). This enables flexible integration with 8-bit or 16-bit microcontrollers without external data bus multiplexing.

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

The Secured Silicon Sector is a dedicated 256-byte region with factory-programmable or customer-programmable 16-byte electronic serial number and permanent lock capability. Unlike standard sectors, it cannot be erased by standard commands and requires explicit unlock sequences; once locked, it remains immutable even after full chip erase, providing hardware-enforced identity and security.

Can S29AS016J70BHI043 be used in systems without a dedicated 1.8 V rail?

No - it requires a tightly regulated 1.65 V to 1.95 V VCC supply for all operations; operation outside this range risks data corruption or failure to execute commands. Systems with only 3.3 V or 2.5 V rails must use an LDO or DC-DC converter to generate compliant 1.8 V, as internal charge pumps do not support higher input voltages.