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Infineon Technologies S29WS256N0SBFW012
- Part No.:
- S29WS256N0SBFW012
- Manufacturer:
- Infineon Technologies
- Category:
- Memory
- Package:
- -
- Datasheet:
-
S29WS256N0SBFW012.pdf
- Description:
- IC FLASH 256MBIT PARALLEL 84FBGA
- Quantity:
- Payment:
- Shipping:
Inventory:3,338
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Product details
Overview
S29WS256N0SBFW012 from Cypress Semiconductor (now Infineon) is a 256 Mbit (16 M × 16-bit) 1.8 V simultaneous read/write burst flash memory with 110 nm MirrorBit™ technology, 80 MHz synchronous operation, 32-word write buffer, and 84-ball FBGA (8 mm × 11.6 mm) packaging - deployed in wireless baseband processors for zero-latency firmware updates and boot code storage.
For engineers reviewing the S29WS256N0SBFW012 datasheet, S29WS256N0SBFW012 pinout, S29WS256N0SBFW012 application, or S29WS256N0SBFW012 equivalent, key selection considerations include simultaneous bank operation support, JEDEC 42.4 command compatibility, dual boot sector configuration, RDY output signaling, and persistent/password-based advanced sector protection.
Technical Context
This device implements a sixteen-bank architecture enabling true concurrent read and write operations across separate banks using independent address/data paths and dedicated RDY status signaling. It supports both synchronous burst (with programmable linear/continuous/wrap-around modes) and asynchronous access, with identical 80 ns max tACC across all speed grades.
The flash integrates hardware write protection (WP#), acceleration input (ACC), AVD#-controlled address latching, and CFI-compliant identification - all operating within a strict 1.7–1.95 V VCC range. Sector erase times are fixed at 150 ms (16 Kword) and 600 ms (64 Kword), with 100,000-cycle endurance and 20-year data retention.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 256 Mbit (16 M × 16-bit organization) |
| Supply Voltage | 1.7–1.95 V single VCC - enables direct integration into 1.8 V core logic domains without level shifting |
| Max Clock Frequency | 80 MHz - delivers 160 MB/s peak synchronous throughput with 9 ns tBACC |
| Burst Buffer Size | 32-word write buffer - reduces effective programming time to 6 µs/word with ACC high |
| Endurance & Retention | 100,000 program/erase cycles per sector; 20-year data retention - validated for long-life embedded firmware storage |
| Package | 84-ball FBGA, 8 mm × 11.6 mm, MCP-compatible - matches industry-standard footprint for multi-die packages |
| Boot Configuration | Dual boot sector (top/bottom 16 Kword sectors) - supports fail-safe firmware recovery and A/B update schemes |
Pinout & Package
84-ball Fine-Pitch Ball Grid Array (FBGA), 8 mm × 11.6 mm, lead-free compliant (VBH084 package). Balls arranged in 12×10 matrix (MD=12, ME=10), with corner A1 identified by chamfer or metallized mark.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A23–A0 | Address Inputs | 24-bit address bus (A23–A0) for full 16 Mword addressing; A23 unconnected on S29WS128N |
| DQ15–DQ0 | Data I/O | 16-bit bidirectional data bus supporting byte/word writes and burst reads |
| CE#, OE#, WE# | Chip/Output/Write Enable | Asynchronous control signals - CE# enables device; OE#/WE# gate read/write timing independently of CLK |
| CLK, AVD# | Clock & Address Valid | AVD# low latches address on next CLK edge in burst mode; high disables address sampling |
| RDY | Ready Output | Active-high open-drain signal indicating valid burst data availability - used for handshaking in latency-sensitive systems |
| WP#, ACC, RESET# | Protection & Control | WP# hardware-locks top/bottom sectors; ACC at VHH enables unlock bypass; RESET# forces return to read mode |
| VCC, VSS, NC, RFU | Power & Reserved | VCC (1.8 V), VSS (ground); NC = no connect; RFU = reserved for future use (e.g., B3, F6 on 128 Mb variant) |
Key Features
| Feature | Design Value |
|---|---|
| Simultaneous Read/Write | Zero-latency concurrent access across two independent banks - eliminates firmware update stalls during active execution |
| Advanced Sector Protection | Persistent lock bits + password method - prevents accidental or malicious reprogramming of critical boot sectors |
| Secured Silicon Sector | 128-word factory + 128-word customer region - stores immutable calibration data or cryptographic keys |
| Suspend/Resume Commands | Pause ongoing erase/program operations to service high-priority reads - maintains real-time system responsiveness |
| Common Flash Interface (CFI) | JEDEC-standard query table at fixed address - enables OS-agnostic flash detection and driver auto-configuration |
Applications
| Wireless Baseband Processor Firmware Storage | Industrial HMI Boot Memory |
|---|---|
Use Scenario: Storing boot code and runtime firmware for LTE/5G baseband SoCs requiring rapid cold-start and over-the-air (OTA) updates. IC Role / Device Role / Timing Role: Primary non-volatile code storage with simultaneous read (executing current image) and write (staging new image) capability. Use Value: Eliminates need for external RAM buffering during OTA; 80 MHz burst read ensures sub-100 ms boot time. | Use Scenario: Holding bootloader and GUI assets in panel-mounted HMIs where power cycling is frequent and field updates must preserve configuration. IC Role / Device Role / Timing Role: Dual-boot flash with protected top/bottom sectors - one holds stable firmware, the other staging area for verified updates. Use Value: Prevents bricking during interrupted updates; hardware WP# and password protection enforce secure update workflows. |
| Automotive Telematics Module Code Storage | Medical Diagnostic Equipment Firmware |
Use Scenario: Hosting application firmware and communication stack in cellular-connected telematics control units (TCUs) operating across –25°C to +85°C. IC Role / Device Role / Timing Role: High-reliability code memory with 20-year data retention and 100K-cycle endurance for infrequent but safety-critical updates. Use Value: Meets automotive qualification requirements without external ECC; RDY output synchronizes DMA transfers to avoid bus contention. | Use Scenario: Storing FDA-cleared diagnostic algorithms and calibration tables in portable ultrasound or ECG devices requiring traceable firmware revisions. IC Role / Device Role / Timing Role: Secured Silicon Sector stores factory-calibrated sensor offsets; customer sector holds user-defined presets. Use Value: Enables regulatory compliance via immutable calibration data; CFI support simplifies automated firmware validation during manufacturing test. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar burst-mode flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| S29WS256P0SBFW012 | Successor product with enhanced reliability, extended temperature range (–40°C to +105°C), and improved AC timing margins | Required for new designs targeting industrial or automotive environments beyond wireless-grade specs | Select when lifecycle assurance, wider temp range, or higher endurance (>200K cycles) is mandated |
| S29GL256S11TFIV10 | Legacy Spansion GL-series; 3 V supply, slower 110 ns tACC, no simultaneous operation | Limited to legacy 3 V systems where voltage compatibility outweighs performance needs | Only consider for drop-in replacement in existing 3 V designs with no timing margin constraints |
Compared with S29WS256N0SBFW012, the S29WS256P offers superior thermal robustness and longevity for new deployments, while the S29GL256S provides voltage-compatible fallback in legacy 3 V infrastructure - neither replicates the zero-latency dual-bank capability of the original N-series.
Availability
S29WS256N0SBFW012 is available at Aetrix Electronics and suitable for wireless infrastructure, industrial HMI, automotive telematics, and medical diagnostic equipment requiring stable component supply despite end-of-life status.
Supply support for S29WS256N0SBFW012 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 in 2020, is a leader in non-volatile memory and microcontroller solutions for embedded systems.
The S29WS-N family was designed specifically for high-performance, low-voltage wireless applications demanding concurrent code execution and firmware updates - targeting baseband processors and connectivity modules before migration to the P-series.
FAQ
Is S29WS256N0SBFW012 still recommended for new designs?
No. Cypress explicitly states this part is "Not Recommended for New Design" and designates S29WS256P0SBFW012 as the factory-recommended migration path. The N-series remains available for legacy production support but lacks the extended temperature range, enhanced reliability testing, and updated AC specifications of the P-series.
What does "0SBFW012" in the part number indicate?
The suffix encodes configuration: "0S" = 80 MHz speed grade; "BF" = lead-free FBGA package; "W" = wireless temperature range (–25°C to +85°C); "01" = DYB unprotect state at power-up; "0" = tray packing. This matches the documented valid combination for S29WS256N in Rev. *B datasheet Section 1.1.
Can S29WS256N0SBFW012 operate in purely asynchronous mode?
Yes. It supports full asynchronous operation using CE#, OE#, and WE# without CLK or AVD#. All timing parameters - including tACC (80 ns), tPACC (20 ns), and tCE/tOE - are specified for asynchronous mode, and RDY remains functional to indicate data readiness independent of clocking.
How is the Secured Silicon Sector accessed?
Access requires issuing specific CFI-compatible command sequences: first enter secured mode via unlock bypass, then execute the Secured Silicon Sector Entry command (0x80 → 0x20 → 0x40). Factory and customer regions are separately addressable at fixed offsets (0x000000 and 0x000080), each holding 128 words of OTP-like storage.
S29WS256N0SBFW012 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- -
- Memory Format:
- FLASH
- Technology:
- FLASH - NOR
- Memory Size:
- 256Mbit
- Memory Organization:
- 16M x 16
- Memory Interface:
- -
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- -
- Access Time:
- -
- Voltage - Supply:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
S29WS256N0SBFW012 FAQ
1.How can I place an order for S29WS256N0SBFW012 through Aetrix?
Please submit a Request for Quotation (RFQ) for S29WS256N0SBFW012 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for S29WS256N0SBFW012 reliable?
The price and inventory of S29WS256N0SBFW012 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S29WS256N0SBFW012 is usually 5 days.
3.What payment methods are accepted for S29WS256N0SBFW012?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S29WS256N0SBFW012 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for S29WS256N0SBFW012?
S29WS256N0SBFW012 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your S29WS256N0SBFW012 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for S29WS256N0SBFW012?
For technical support, including S29WS256N0SBFW012 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S29WS256N0SBFW012 requirements.
6.How does Aetrix verify that S29WS256N0SBFW012 is sourced from the original manufacturer or authorized distributors?
All S29WS256N0SBFW012 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that S29WS256N0SBFW012 meets industry standards.
7.What is the process for return or replacement of S29WS256N0SBFW012?
All S29WS256N0SBFW012 units undergo pre-shipment inspection (PSI). If there is an issue with S29WS256N0SBFW012, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The S29WS256N0SBFW012 part is unused and in its original packaging.
Return procedure for S29WS256N0SBFW012:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
S29WS256N0SBFW012 Tags
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