Infineon Technologies S29AL016J55BFIR20

Overview

S29AL016J55BFIR20 from Infineon Technologies (formerly Cypress) is a 16 Mbit (2M × 8-bit / 1M × 16-bit), 3.0 V-only boot sector Flash memory with 55 ns access time, AEC-Q100 Grade 1 (–40°C to +125°C) qualification, and flexible sector architecture including one 16 KB, two 8 KB, one 32 KB, and thirty-one 64 KB sectors. It supports in-system programming via standard 3.0 V V_CC, features hardware sector protection, and is used in automotive engine control units for secure boot firmware storage.

For engineers reviewing the S29AL016J55BFIR20 datasheet, S29AL016J55BFIR20 pinout, S29AL016J55BFIR20 application, or S29AL016J55BFIR20 equivalent, this page delivers verified technical context, JEDEC-compliant command set behavior, CFI interface support, erase suspend/resume capability, and package-specific pin mapping for TSOP and BGA variants.

Technical Context

The S29AL016J55BFIR20 implements a command-register-driven state machine for embedded program/erase algorithms, with automatic pulse width timing and margin verification. It supports both byte (x8) and word (x16) data interfaces via DQ7–DQ0 or DQ15–DQ0, respectively, and uses BYTE# pin to select mode.

Hardware features include RY/BY# for cycle completion detection, RESET# for immediate state reset to read mode, and WP# for boot-sector write protection. Sector group protection is enforced via dedicated command sequences and can be temporarily lifted using Erase Suspend to enable background code updates.

Key Specifications

Pinout & Package

Package: 48-ball Fine-pitch BGA (VBK048, 0.8 mm pitch, 8.15 mm × 6.15 mm). Pinout validated per Infineon Document 002-00777 Rev. *Q, Figure 2.

Key Features

Applications

Equivalent & Alternatives

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

Compared with S29AL016J70TFI020, this part delivers faster boot response in time-critical automotive systems; versus MX29LV160ETTI-70G, it adds factory-locked security features and extended temperature validation essential for safety-critical deployment.

Availability

S29AL016J55BFIR20 is available at Aetrix Electronics and suitable for automotive engine control units, industrial PLCs, medical imaging boot systems, and avionics data recorders requiring stable component supply across extended product lifecycles.

Supply support for S29AL016J55BFIR20 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.

This device belongs to Infineon's legacy Cypress Flash memory portfolio, designed specifically for automotive and industrial applications demanding AEC-Q100 qualification, secure boot capabilities, and long-term data retention in harsh environments.

FAQ

What package type does S29AL016J55BFIR20 use?

S29AL016J55BFIR20 uses the 48-ball Fine-pitch BGA (VBK048) package with 0.8 mm ball pitch and 8.15 mm × 6.15 mm footprint. This package is distinct from the 64-ball Fortified BGA and 48-pin TSOP variants offered in the same family, and its pinout is documented in Figure 2 of Infineon's datasheet 002-00777 Rev. *Q.

Does this device support both x8 and x16 data bus configurations?

Yes - S29AL016J55BFIR20 supports configurable x8 or x16 operation via the BYTE# pin. When BYTE# is high, DQ15–DQ0 operate as a 16-bit bus (1M × 16 organization); when low, only DQ7–DQ0 are active in 2M × 8 mode. The device internally maps A−1 to DQ15 in x16 mode for proper addressing.

How is sector protection implemented and controlled?

Sector protection is implemented through hardware-latched sector lock bits programmed via command sequences (e.g., Program Setup + Program Command). Protection can be applied in-system or via programming equipment. The WP# pin provides additional hardware-level protection for the boot sector (top or bottom 16 KB), and Temporary Sector Unprotect allows safe code modification in locked sectors during maintenance windows.

Is the Secured Silicon Sector pre-programmed and locked at the factory?

The Secured Silicon Sector is configurable: it may be factory-programmed and locked (with a unique 8-word electronic serial number) or shipped unprogrammed and customer-lockable. Programming requires the Enter Secured Silicon Sector command sequence, and locking is permanent once executed - enabling either Infineon-assigned traceability or end-user-defined device identity.