Infineon Technologies S29AL008J70TFM020

Overview

S29AL008J70TFM020 from Infineon Technologies (formerly Cypress) is an 8 Mbit (1M × 8-bit / 512K × 16-bit), 3.0 V-only boot sector Flash memory with 55 ns access time, automotive-grade AEC-Q100 Grade 1 support (–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 operates across 2.7–3.6 V, supports in-system programming without high-voltage VPP, and integrates hardware write protection via WP# and RESET# pins for embedded boot code storage.

For engineers reviewing the S29AL008J70TFM020 datasheet, S29AL008J70TFM020 pinout, S29AL008J70TFM020 application, or S29AL008J70TFM020 equivalent, key selection criteria include boot-block configuration (top/bottom), CFI compliance for host auto-configuration, erase suspend/resume capability for real-time firmware updates, and Secured Silicon Sector with factory-programmable 128-word electronic serial number.

Technical Context

The S29AL008J70TFM020 implements a command-register-based state machine that executes embedded algorithms for program (hot electron injection) and erase (Fowler-Nordheim tunneling) operations. It supports both x8 and x16 data bus widths via BYTE# pin control and uses DQ15/A-1 as dual-function pin - data I/O in word mode, LSB address in byte mode.

Hardware features include RY/BY# for cycle completion detection, dedicated WP# for boot-sector lock, and RESET# for immediate termination of ongoing operations and return to read mode. Its CFI-compliant interface provides standardized device identification and geometry data to host firmware, enabling plug-and-play Flash replacement in multi-device systems.

Key Specifications

Pinout & Package

Package: 48-ball Fine-pitch BGA (VBK048), 0.8 mm ball pitch, 8.15 mm × 6.15 mm body size, 1.00 mm height. Pinout conforms to JEDEC MO-245 standard.

Key Features

Applications

Equivalent & Alternatives

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

Compared with S29AL008J70TFM020, the TSOP variant offers mechanical serviceability but larger footprint, while the MX29LV008CTTI-70G sacrifices automotive qualification, secure identity, and CFI flexibility for lower unit cost in non-critical systems.

Availability

S29AL008J70TFM020 is available at Aetrix Electronics and suitable for automotive ECU design, industrial PLC firmware storage, and medical imaging bootloader applications requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant Flash memory.

Supply support for S29AL008J70TFM020 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, and security solutions with vertical integration from silicon manufacturing to system-level IP.

The S29AL008J series belongs to Infineon's legacy Cypress Flash portfolio, designed specifically for robust, in-system programmable boot memory in safety-critical automotive and industrial control systems requiring high endurance and secure identity.

FAQ

What boot configuration does S29AL008J70TFM020 support?

S29AL008J70TFM020 supports both top-boot and bottom-boot configurations, determined by internal metal option during wafer fabrication. The boot block location (first or last 16 KB) is fixed per unit and cannot be changed in-system. WP# pin protects this designated boot sector against accidental writes.

Does S29AL008J70TFM020 require external high-voltage circuitry for programming?

No. S29AL008J70TFM020 performs all program and erase operations using only the 3.0 V VCC supply (2.7–3.6 V range). Internally generated and regulated voltages handle Fowler-Nordheim tunneling and hot electron injection - no external VPP or 5 V supply is needed.

How is the Secured Silicon Sector programmed and locked?

The Secured Silicon Sector is programmed using standard command sequences (e.g., unlock-bypass followed by program commands) and locked via a dedicated lock command. It can be factory-programmed and locked during test, or left unprogrammed for customer configuration. Once locked, it cannot be unlocked or rewritten.

Can S29AL008J70TFM020 operate in both x8 and x16 data bus modes?

Yes. The BYTE# pin selects bus width: logic low enables x8 mode (DQ7–DQ0 active), logic high enables x16 mode (DQ15–DQ0 active). DQ15/A-1 functions as data I/O in x16 mode and as address bit A-1 (LSB) in x8 mode, enabling seamless integration with 8-bit or 16-bit microcontrollers.