Infineon Technologies S29AL008J70BAI012

Overview

S29AL008J70BAI012 from Infineon Technologies (formerly Cypress) is an 8 Mbit (1 M × 8-bit / 512 K × 16-bit), 3.0 V-only boot sector Flash memory with 55 ns access time, AEC-Q100 Grade 1 qualification (–40°C to +125°C), and flexible sector architecture including one 16 KB, two 8 KB, one 32 KB, and fifteen 64 KB sectors. It supports in-system programming via standard 3.0 V VCC-no 5 V or 12 V required-and integrates hardware write protection, erase suspend/resume, and CFI compliance for embedded automotive and industrial firmware storage.

For engineers reviewing the S29AL008J70BAI012 datasheet, S29AL008J70BAI012 pinout, S29AL008J70BAI012 application, or S29AL008J70BAI012 equivalent, key selection criteria include boot-block configuration (top/bottom), sector protection granularity, RY/BY# and RESET# hardware signaling, low-power sleep mode (0.2 µA), and JEDEC software compatibility for firmware update reliability in safety-critical systems.

Technical Context

The S29AL008J70BAI012 implements a command-register-driven state machine for Embedded Erase and Embedded Program algorithms, eliminating external timing control. It uses Fowler-Nordheim tunneling for erase and hot electron injection for program operations, with internal voltage generation for ±12 V-equivalent programming/erasing from a single 3.0 V supply.

Its dual-mode interface supports byte (DQ7–DQ0) and word (DQ15–DQ0) data widths via BYTE# pin control, while sector group protection enables hardware locking of individual sectors-including temporary unprotect for field code updates-and Secured Silicon Sector provides factory- or customer-programmable 256-byte identification space with 8-word ESN.

Key Specifications

Pinout & Package

Package: 48-ball Fine-pitch BGA (VBK048), 0.8 mm pitch, 8.15 mm × 6.15 mm × 1.00 mm body.

Key Features

Applications

Equivalent & Alternatives

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

Compared with S29AL008J70BAI012, the TSOP variant offers identical electrical behavior but different mechanical integration, while the MX29LV008CTTI-70G trades security and software flexibility for lower unit cost-making it suitable only where boot integrity and field update robustness are not safety-critical.

Availability

S29AL008J70BAI012 is available at Aetrix Electronics and suitable for automotive ECU firmware storage, ADAS domain controller boot memory, and industrial PLC program retention requiring stable component supply across extended product lifecycles.

Supply support for S29AL008J70BAI012 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 connectivity solutions with vertical integration from silicon to system-level IP.

The S29AL008J series belongs to Infineon's automotive-qualified parallel NOR Flash portfolio, engineered specifically for deterministic boot performance, firmware security, and long-term reliability in safety-critical electronic control units.

FAQ

Is S29AL008J70BAI012 pin-compatible with earlier S29AL008D devices?

Yes, the S29AL008J70BAI012 maintains identical pinout and command set compatibility with the S29AL008D, including TSOP-48 and BGA-48 footprints. It is manufactured on 110 nm process technology while retaining full functional and timing equivalence-enabling drop-in replacement without PCB or firmware changes.

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

The BYTE# pin selects between 8-bit (BYTE# = HIGH) and 16-bit (BYTE# = LOW) data interface modes. In byte mode, DQ7–DQ0 carry data and A-1 is input on DQ15; in word mode, DQ15–DQ0 carry 16-bit data. This dual-mode capability allows seamless integration with both 8-bit and 16-bit microcontroller buses without external glue logic.

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

The Secured Silicon Sector is a dedicated 256-byte region with factory- or customer-programmable 16-byte Electronic Serial Number and permanent lock capability. Unlike standard sectors, it cannot be erased by standard commands once locked, and its contents remain intact across full chip erase-providing tamper-resistant device identity for secure boot and licensing enforcement.

Can WP# protect only the boot sector, or does it affect other sectors?

WP# exclusively protects the boot sector-either the top 16 KB (if configured as top-boot) or bottom 16 KB (if configured as bottom-boot)-by disabling program and erase operations in that sector only. All other sectors remain fully accessible for read/write/erase unless individually protected via software sector group protection commands.