Infineon Technologies S29AS016J70BFI043

Overview

S29AS016J70BFI043 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 configuration, 70 ns access time, industrial-plus temperature range (–40 °C to +105 °C), and AEC-Q100 Grade 2 qualification - deployed in automotive engine control units for secure firmware storage and in-system reprogramming.

For engineers reviewing the S29AS016J70BFI043 datasheet, S29AS016J70BFI043 pinout, S29AS016J70BFI043 application, or S29AS016J70BFI043 equivalent, key selection criteria include boot sector architecture, 1.65–1.95 V single-supply operation, CFI compliance, Erase Suspend capability, and hardware write protection via WP# and sector group lock.

Technical Context

The S29AS016J70BFI043 implements a command-set-compatible JEDEC single-power-supply Flash architecture with embedded program/erase algorithms that auto-timing pulse widths and verify cell margin. It supports both x8 and x16 bus configurations via BYTE# pin control and features dual power-saving modes: automatic sleep (15 µA) and standby (8 µA).

Its flexible sector architecture comprises eight 8 KB (x8) / 4 KWord (x16) boot sectors and thirty-one 64 KB / 32 KWord main sectors, each independently erasable. Hardware features include RY/BY# status signaling, RESET#-driven state-machine reset, and WP#-enabled protection of outermost boot sectors regardless of software lock status.

Key Specifications

Pinout & Package

Package: 48-ball Fine-Pitch BGA (VDF048, 6.0 mm × 4.0 mm). Ball pitch: 0.5 mm. RoHS-compliant, lead-free finish.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MX29GL160EHTI-70G and S29GL032N90TFI020, the S29AS016J70BFI043 uniquely balances 1.8 V operation, 70 ns speed, AEC-Q100 Grade 2, and factory-programmable silicon ID - making it optimal for space-constrained, safety-certified automotive and industrial edge nodes.

Availability

S29AS016J70BFI043 is available at Aetrix Electronics and suitable for automotive engine control units, industrial PLCs, medical infusion pump controllers, and smart grid communication modules requiring stable component supply across extended product lifecycles.

Supply support for S29AS016J70BFI043 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 vertical integration from silicon fabrication to system-level validation.

The S29AS016J series belongs to Infineon's automotive-qualified parallel NOR Flash portfolio, engineered specifically for mission-critical firmware storage in ASIL-B/C systems where deterministic timing, data integrity, and physical security are non-negotiable.

FAQ

Is S29AS016J70BFI043 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. The 110 nm process improves power efficiency and endurance while maintaining identical TSOP and FBGA footprints.

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

The BYTE# pin selects between x8 (BYTE# = HIGH) and x16 (BYTE# = LOW) data bus modes. In x16 mode, DQ15–DQ0 carry full word data; in x8 mode, only DQ7–DQ0 are active, with DQ15 repurposed as A-1 address bit - essential for matching host processor bus width.

How does the Secured Silicon Sector differ from standard flash sectors in terms of programming and locking?

The Secured Silicon Sector is a dedicated 256-byte region with factory-programmable 16-byte electronic serial number. It can be locked permanently at the factory or by the customer using a unique command sequence - once locked, no further writes or erases are possible, even via hardware reset or power cycle.

Can Erase Suspend be used during chip-erase operations, or only during sector-erase?

Erase Suspend is supported only during sector-erase operations, not chip-erase. This allows temporary interruption of a targeted sector erase to read or program another sector - enabling real-time responsiveness in bootloaders - but chip-erase remains an atomic, uninterruptible operation.