Cypress Semiconductor Corp S29WS064RABBHW010

Overview

S29WS064RABBHW010 from Cypress Semiconductor (formerly Spansion) is a 64 Mbit (4M × 16-bit), 1.8 V-only MirrorBit® Flash memory with simultaneous read/write operation across four independent banks, 108 MHz synchronous burst capability, and VersatileIO™ support for 1.8 V I/O compatibility. It features 32-word write buffering, dynamic sector protection (DYB), and secured silicon sector (256 words) for firmware integrity in boot-critical embedded systems.

For engineers reviewing the S29WS064RABBHW010 datasheet, S29WS064RABBHW010 pinout, S29WS064RABBHW010 application, or S29WS064RABBHW010 equivalent, key selection criteria include zero-latency bank interleaving, JEDEC 42.4 command set compliance, -40°C to +85°C industrial temperature rating, FBGA-84 package footprint, and hardware reset (RESET#) integration for boot loader recovery.

Technical Context

This device implements a four-bank architecture enabling true concurrent read and erase/program operations - e.g., executing a 800 ms sector erase in Bank 0 while sustaining continuous 108 MHz burst reads from Bank 2. Its VersatileIO™ logic ties output drive strength and input voltage tolerance directly to the VIO pin voltage, decoupling I/O signaling from core VCC (1.7–1.95 V).

The embedded algorithms handle full program/erase timing and margin verification autonomously: Embedded Program verifies cell threshold margins post-write; Embedded Erase includes pre-programming and Fowler-Nordheim tunneling erase. Handshaking via RDY output enables latency-optimized host control without polling overhead.

Key Specifications

Pinout & Package

Supplied in an 84-ball Fine-Pitch Ball Grid Array (FBGA) package measuring 8 mm × 11.6 mm with 0.8 mm ball pitch, optimized for high-density PCB layouts and thermal dissipation in stacked memory modules.

Key Features

Applications

Equivalent & Alternatives

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

Compared with S29GL064S90TFI020 and MX29GL640EHTI-90G, the S29WS064RABBHW010 uniquely delivers 1.8 V single-rail operation with zero-latency bank concurrency, making it the only option among the three that supports real-time firmware updates without interrupting system responsiveness.

Availability

S29WS064RABBHW010 is available at Aetrix Electronics and suitable for automotive instrument clusters, industrial PLCs, medical imaging panels, and network edge routers requiring stable component supply, long-term lifecycle assurance, and guaranteed -40°C to +85°C operation.

Supply support for S29WS064RABBHW010 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) is a global leader in embedded solutions, delivering high-performance, high-reliability semiconductor products for automotive, industrial, and consumer applications.

The S29WS064R belongs to Cypress's MirrorBit Flash product line, engineered specifically for systems demanding concurrent firmware execution and update - such as automotive ADAS ECUs, industrial HMIs, and telecom infrastructure where downtime during field upgrades is unacceptable.

FAQ

What is the purpose of the VIO pin on the S29WS064RABBHW010?

The VIO pin sets both the output drive voltage level and input logic threshold voltage for the DQ15–DQ0 data bus. It must be connected to the same voltage rail as the host processor's I/O interface (e.g., 1.8 V) to ensure signal compatibility without level shifters. This VersatileIO™ feature decouples I/O signaling from the core VCC supply, simplifying mixed-voltage system design and improving noise immunity.

Does the S29WS064RABBHW010 support true background erase during active read operations?

Yes - its four-bank architecture enables true background erase: while one bank undergoes sector erase (e.g., 800 ms for a 32-kword sector), the host can perform continuous synchronous burst reads from any other bank with zero latency. The RDY signal confirms data validity, eliminating need for DQ polling and ensuring deterministic timing for real-time applications like automotive displays.

How does the Secured Silicon Sector differ from standard flash sectors?

The Secured Silicon Sector is a dedicated 256-word region split into 128-word Factory and Customer sub-regions, accessible only via specific unlock command sequences. Unlike regular sectors, it cannot be erased by standard commands and retains factory-programmed boot code or user-defined cryptographic keys even after full chip erase. This provides hardware-enforced immutability critical for secure boot and anti-tampering compliance.

Can the S29WS064RABBHW010 operate without the ACC pin connected?

Yes - the ACC pin is optional. When left unconnected or held at VSS, the device operates using standard VCC (1.7–1.95 V) for programming, with typical single-word programming time of 170 µs and write-buffer programming at 14.1 µs per word. Applying 9.0 V to ACC reduces write-buffer programming time to 9.0 µs per word but requires external HV generation circuitry and is not required for functional operation.