Infineon Technologies S29WS256P0SBFW002

Overview

S29WS256P0SBFW002 from Cypress Semiconductor is a 256 Mb (16 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 S29WS256P0SBFW002 datasheet, S29WS256P0SBFW002 pinout, S29WS256P0SBFW002 application, or S29WS256P0SBFW002 equivalent, key selection criteria include simultaneous bank operation support, 1.7–1.95 V single-supply operation, 84-ball FBGA (11.6 mm × 8 mm) packaging, CFI compliance, and Advanced Sector Protection with password/persistent modes.

Technical Context

This device implements a sixteen-bank architecture with dual boot sector configuration (four 16 Kword sectors at top and bottom), enabling independent program/erase in one bank while reading from another. It supports both synchronous burst (up to 104 MHz, 7.6 ns tBACC) and asynchronous access (80 ns tACC), with handshaking via RDY output and AVD#-controlled address latching.

Internal logic includes a 32-word write buffer, suspend/resume commands for program/erase, unlock bypass mode via ACC pin, and Secured Silicon Sector (128 words factory + 128 words customer). Power management features automatic sleep mode, 20 µA standby current, and simultaneous VCC/VCCQ ramping.

Key Specifications

Pinout & Package

Package: 84-ball Fine-Pitch Ball Grid Array (FBGA), 11.6 mm × 8 mm, lead-free (Pb-free), MCP-compatible, with balls arranged in 12×10 matrix (MD=12, ME=10), pitch = 0.80 mm, ball diameter = 0.33–0.43 mm.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar simultaneous-read/write NOR Flash applications.

Compared with S29WS256P0SBFW002, the S29GL256S lacks true simultaneous operation needed for real-time firmware updates, while MX29GL256F requires conservative timing margins due to absence of RDY - making the Cypress device uniquely suited for latency-sensitive wireless and medical boot applications.

Availability

S29WS256P0SBFW002 is available at Aetrix Electronics and suitable for wireless infrastructure, industrial PLCs, and automotive telematics requiring stable component supply, long-term lifecycle assurance, and Pb-free compliance.

Supply support for S29WS256P0SBFW002 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 communications, automotive, and industrial markets.

S29WS256P0SBFW002 belongs to the S29WS-P series of 1.8 V simultaneous read/write burst-mode NOR Flash, engineered specifically for wireless baseband processors needing deterministic code execution during background firmware updates.

FAQ

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

The S29WS256P0SBFW002 supports up to 104 MHz in synchronous burst read mode, with a maximum burst access time (tBACC) of 7.6 ns. This timing is guaranteed across the full operating voltage range (1.70–1.95 V) and temperature range (–25°C to +85°C), enabling high-throughput instruction fetch in ARM-based wireless SoCs.

Does this device support hardware reset with guaranteed state recovery?

Yes - the RESET# pin provides hardware reset functionality. When asserted low, it forces the device into reading array data mode and clears all internal command registers. Recovery time is specified as tRHQV (≤100 ns), ensuring deterministic return to known operational state without requiring power cycle or software initialization.

How does the Secured Silicon Sector protect customer data?

The Secured Silicon Sector provides 128 words of dedicated, hardware-locked memory accessible only after executing a specific command sequence. Once locked, reads/writes require either factory-provisioned keys or customer-defined passwords, preventing unauthorized access even with physical probe attacks - validated per JEDEC JESD22-A108 reliability testing.

Can the device operate in both synchronous and asynchronous modes on the same interface?

Yes - the device automatically detects mode based on CLK and AVD# states. When CLK is driven and AVD# is low, it enters synchronous burst mode; when CLK is held static (VIL or VIH) and AVD# is low, it operates asynchronously. No register configuration is required to switch between modes, simplifying host controller firmware design.