Infineon Technologies S29WS128N0PBFW010

Overview

S29WS128N0PBFW010 from Cypress Semiconductor (now Infineon) is a 128 Mbit (8 M × 16-bit) 1.8 V simultaneous read/write burst flash memory using 110 nm MirrorBit™ technology. It supports zero-latency concurrent operations across two independent banks, delivers 80 MHz synchronous burst access with 9 ns tBACC, and features hardware write protection (WP#), RDY output signaling, and dual boot sector configuration for embedded firmware storage in wireless baseband processors and industrial controllers.

For engineers reviewing the S29WS128N0PBFW010 datasheet, S29WS128N0PBFW010 pinout, S29WS128N0PBFW010 application, or S29WS128N0PBFW010 equivalent, key selection criteria include 1.7–1.95 V single-supply operation, 84-ball FBGA (8 mm × 11.6 mm) package compatibility, JEDEC 42.4 command set compliance, CFI support, and simultaneous read/write latency requirements in NOR flash-based boot memory systems.

Technical Context

This device implements a sixteen-bank architecture with four 16 Kword top/bottom sectors and 126 × 64 Kword main sectors, enabling granular erase control and secure silicon sector partitioning (128 words each for factory and customer use). Its asynchronous page access time is 20 ns, and it supports both synchronous burst and asynchronous read modes with identical 80 ns tACC.

The device integrates ACC acceleration input for factory programming, AVD#-controlled address latching, suspend/resume commands for program/erase, and persistent/password-based advanced sector protection - all operating within a 1.7–1.95 V VCC range and –25°C to +85°C temperature grade.

Key Specifications

Pinout & Package

84-ball Fine-Pitch Ball Grid Array (FBGA), 8 mm × 11.6 mm, MCP-compatible, lead-free (Pb-free) compliant package with 0.8 mm ball pitch.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar burst-mode NOR flash memory applications.

Compared with S29WS128N0PBFW010, the S29WS128P offers higher voltage tolerance and longer manufacturer support, while the S29GL128S trades concurrency for broader legacy ecosystem compatibility - making the N-series optimal only for existing designs locked to its specific timing and protection behavior.

Availability

S29WS128N0PBFW010 is available at Aetrix Electronics and suitable for wireless baseband processor boot memory, industrial PLC firmware storage, and automotive telematics module applications requiring stable component supply despite end-of-life status.

Supply support for S29WS128N0PBFW010 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

Cypress Semiconductor - acquired by Infineon Technologies in 2020 - is a leader in high-performance nonvolatile memory and microcontroller solutions for embedded systems.

The S29WS-N family was designed specifically for 1.8 V wireless infrastructure and portable electronics requiring simultaneous code execution and firmware update, leveraging MirrorBit™ charge-trapping technology to achieve density and speed without compromising reliability.

FAQ

Is S29WS128N0PBFW010 still recommended for new designs?

No - Cypress explicitly states this part is "Not Recommended for New Design" and designates S29WS128P0PBFW010 as the factory-recommended migration path. While functional and available through authorized channels, new projects should adopt the P-series for continued technical support, extended voltage range, and updated qualification standards.

What does "DYB Unprotect" mean in the part number S29WS128N0PBFW010?

The "01" in the model number indicates Dynamic Yield Bit (DYB) state at power-up: "01" means DYB is unprotect (i.e., sectors are writable after reset unless locked via software or WP#). This differs from "11", where DYB defaults to protect - a critical distinction for boot sequence initialization and field update safety protocols.

Can S29WS128N0PBFW010 operate in purely asynchronous mode without CLK?

Yes - CLK is only required for synchronous burst read mode. All other operations - including asynchronous read, page read, program, and erase - function fully with CE#, OE#, and WE# alone. The RDY signal remains active in async mode to indicate data readiness, eliminating need for fixed wait-state insertion.

How is the 84-ball FBGA pinout validated for S29WS128N0PBFW010?

Pin assignments are confirmed from Cypress Document Number 002-01825 Rev. *B, Figure 4.1 (page 6), which explicitly labels ball positions for the 128 Mb variant, including NC status of A23 and RFU designation for balls F6, G5, F5, and others. The layout matches VBH084 package mechanical dimensions and MCP compatibility requirements.