Infineon Technologies S29WS128PABBFW000

Overview

S29WS128PABBFW000 from Cypress Semiconductor is a 128 Mb (8 M × 16-bit) 1.8 V simultaneous read/write NOR Flash memory using 90 nm MirrorBit™ technology, supporting zero-latency concurrent operations across two independent banks, with 104 MHz burst read capability and hardware write protection on top/bottom sectors - deployed in wireless baseband processors for firmware storage and real-time code execution.

For engineers reviewing the S29WS128PABBFW000 datasheet, S29WS128PABBFW000 pinout, S29WS128PABBFW000 application, or S29WS128PABBFW000 equivalent, this page delivers verified package mapping (84-ball FBGA), bank architecture (16 banks), timing specs (7.6 ns burst access), sector protection methods (Persistent/Password), and CFI-compliant command set - all confirmed from Cypress Document 002-01747 Rev. *B.

Technical Context

This device implements a 16-bank architecture with separate address/data paths per bank, enabling true simultaneous read and write without arbitration delay. It supports both synchronous (burst) and asynchronous operation modes, with programmable linear burst lengths (8/16/32 words) and wrap-around capability.

Internal handshaking via RDY output signals completion of program/erase operations, while ACC pin enables high-voltage acceleration for factory programming. Sector erase times are fixed at 350 ms for 16 Kword sectors and 600 ms for 64 Kword sectors, with 100,000-cycle endurance per sector.

Key Specifications

Pinout & Package

84-ball Fine-Pitch Ball Grid Array (FBGA), 11.6 mm × 8 mm, MCP-compatible, lead-free (Pb-free) compliant package (VBH084 footprint). Balls F6 and G8 are RFU on S29WS128P.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar NOR Flash memory applications.

Compared with S29WS128PABBFW000, the S29GL128S11TFI010 trades simultaneous operation for higher voltage tolerance, while MX29GL128FHTI-90G sacrifices CFI compliance and RDY signaling to reduce BOM cost - neither supports zero-latency concurrent access critical for wireless baseband firmware agility.

Availability

S29WS128PABBFW000 is available at Aetrix Electronics and suitable for wireless infrastructure, industrial PLCs, automotive telematics, and medical imaging systems requiring stable component supply, long-term lifecycle support, and Pb-free compliance.

Supply support for S29WS128PABBFW000 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 (now part of Infineon Technologies) designs high-performance, low-power memory and microcontroller solutions for embedded and connectivity applications.

The S29WS-P series targets wireless and portable electronics needing high-density, low-voltage NOR Flash with real-time update capability - optimized for baseband processors and application SoCs demanding concurrent code execution and firmware patching.

FAQ

What is the maximum clock frequency supported in burst read mode?

The S29WS128PABBFW000 supports up to 104 MHz in synchronous burst read mode, achieving a 7.6 ns burst access time (tBACC). This frequency is specified under 1.70–1.95 V VCC and meets JEDEC 42.4 timing requirements for high-speed code fetch in wireless baseband applications.

Does this device support true simultaneous read and write across different memory banks?

Yes - the S29WS128PABBFW000 implements a 16-bank architecture with independent address/data paths per bank, enabling zero-latency concurrent read from one bank and program/erase in another. This is confirmed in the block diagram and Section 7.8 of Document 002-01747 Rev. *B.

How is hardware write protection implemented on the top and bottom sectors?

Hardware write protection is controlled by the WP# pin: when driven low, it disables program and erase functions exclusively in the four outermost 16 Kword sectors (two at top, two at bottom). All other sectors remain fully writable, preserving flexibility for application data storage.

Is the Secured Silicon Sector accessible via standard CFI commands?

No - the Secured Silicon Sector (128 words factory + 128 words customer) requires dedicated entry/exit command sequences (detailed in Section 10.3 of the datasheet) and is isolated from normal CFI query operations to prevent accidental overwrite or unauthorized access.