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Winbond Electronics Corporation W25X32VSFIG
- Part No.:
- W25X32VSFIG
- Manufacturer:
- Winbond Electronics Corporation
- Category:
- Memory
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
W25X32VSFIG.pdf
- Description:
- IC FLASH 32MBIT SPI 75MHZ 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,219
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Product details
Overview
W25X32VSFIG from Winbond is a 32M-bit (4MB) serial NOR flash memory IC supporting Dual Output SPI interface, organized into 16,384 pages of 256 bytes each, with uniform 4KB sectors and 64KB blocks, operating from 2.7V to 3.6V, and used for code storage and data logging in space-constrained embedded systems.
For engineers reviewing the W25X32VSFIG datasheet, W25X32VSFIG pinout, W25X32VSFIG application, or W25X32VSFIG equivalent, key selection factors include its 75MHz SPI clock support, Fast Read Dual Output (3Bh) instruction enabling 150Mbps effective throughput, hardware/software write protection via /WP and status register, and compatibility with standard and Mode 3 SPI buses.
Technical Context
The W25X32VSFIG implements a standard SPI-compatible bus with four signals-CLK, /CS, DIO, and DO-and supports both SPI Mode 0 (CPOL=0, CPHA=0) and Mode 3 (CPOL=1, CPHA=1). Its dual-output capability activates only during Fast Read Dual Output (3Bh), repurposing DIO as a second output while retaining single-input functionality for all other instructions.
Internal architecture includes a 16,384-page array (4MB total), sector erase (4KB), block erase (64KB), and chip erase operations, with status register bits (BP2–BP0, TB, SRP) enabling granular hardware- and software-controlled write protection. The /HOLD pin provides deterministic pause/resume control during active /CS, critical for multi-device SPI bus sharing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 32 M-bit (4 MB), enabling storage of firmware images up to ~4 million bytes |
| Sector Size | Uniform 4 KB sectors (1024 sectors), allowing fine-grained data partitioning and wear leveling |
| Page Size | 256 bytes per programmable page, limiting atomic write size and buffer requirements |
| SPI Clock Max | 75 MHz, delivering up to 150 Mbps effective read rate using Fast Read Dual Output |
| Supply Voltage | 2.7 V to 3.6 V, compatible with 3.3 V logic systems without level shifting |
| Endurance | 100,000 program/erase cycles per sector, supporting long-term field updates |
| Data Retention | 20 years at +25°C, ensuring reliable non-volatile storage over product lifetime |
Pinout & Package
W25X32VSFIG is packaged in an 8-pin SOIC 208-mil (package code SS), with industry-standard pinout and footprint compatible with PCB layouts designed for W25X16/W25X32 family members in same package variant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 /CS | Chip Select Input | Active-low enable signal; device ignores instructions when high, enters standby current mode (~1 µA) |
| 2 DO | Serial Data Output | Primary output for standard SPI reads; outputs data on CLK falling edge |
| 3 /WP | Write Protect Input | Hardware lock for status register writes when SRP=1 and /WP low; prevents accidental configuration changes |
| 4 GND | Ground Reference | Signal and power return path; must be low-impedance for stable timing and noise immunity |
| 5 DIO | Serial Data I/O | Input for commands/addresses/data; becomes secondary output during Fast Read Dual Output (3Bh) |
| 6 CLK | Serial Clock Input | Timing reference for all SPI transfers; sampled on rising edge for input, drives output on falling edge |
| 7 /HOLD | Hold Input | Pauses ongoing operation without deselecting; maintains internal state for seamless resume after bus arbitration |
| 8 VCC | Power Supply | Single 2.7–3.6 V supply; powers core logic and I/O; requires local decoupling capacitor |
Key Features
| Feature | Design Value |
|---|---|
| Dual Output SPI Interface | Enables 150 Mbps read throughput via Fast Read Dual Output (3Bh), matching parallel flash performance with 4-pin interface |
| Flexible Write Protection | Combines hardware (/WP pin) and software (status register BP/TB/SRP bits) to protect any 4KB sector or contiguous region |
| HOLD Function | Allows deterministic pause/resume of SPI transactions without losing internal state-critical for interrupt-driven multi-peripheral systems |
| Uniform 4KB Sectors | Supports precise firmware patching and parameter storage without erasing unrelated code regions |
| JEDEC ID Support | Responds to 9Fh command with manufacturer (EFh) and device (3016h) IDs, enabling automated flash detection in bootloaders |
Applications
| Boot Code Storage | Firmware Update Storage |
|---|---|
Use Scenario: Storing primary bootloader and application firmware executed directly from flash or shadowed to RAM at power-up. IC Role / Device Role / Timing Role: Non-volatile code storage device interfaced via SPI during cold start and reset sequences. Use Value: Enables fast boot via Fast Read Dual Output (3Bh), reducing startup latency by up to 2× versus standard SPI reads. | Use Scenario: Holding field-upgradable firmware images downloaded over UART, USB, or wireless link. IC Role / Device Role / Timing Role: Field-programmable storage partition accessed during maintenance mode for atomic image replacement. Use Value: 4KB sector granularity allows safe dual-bank update schemes without disrupting active runtime code. |
| Parameter & Configuration Storage | Audio/Data Logging Buffer |
Use Scenario: Retaining calibration data, user preferences, and system configuration across power cycles in industrial controllers. IC Role / Device Role / Timing Role: Persistent parameter store written infrequently but read on every boot or initialization. Use Value: Hardware write protection (/WP + SRP) prevents corruption during brown-out or ESD events. | Use Scenario: Capturing sensor telemetry or voice snippets in battery-powered IoT nodes with intermittent connectivity. IC Role / Device Role / Timing Role: Circular buffer managed by MCU firmware using sector-erase and page-program operations. Use Value: 100,000 erase/write cycles and 20-year retention ensure reliable logging over multi-year deployments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial NOR flash applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| W25Q32JVSSIQ | Quad SPI (QSPI) capable, 133MHz clock, 4-byte address support, deeper power-down modes | Better suited for high-speed code XIP and larger memory maps (>16MB) | Select when migrating to QSPI interface or requiring >32MB addressing headroom |
| AT25DF321A-SSH-T | Same density and SOIC-8 package; supports standard SPI only (no dual output); 85°C max temp rating | Limited to legacy SPI-only designs; no Fast Read Dual Output acceleration | Choose if dual-output feature is unused and cross-supplier qualification is required |
Compared with W25X32VSFIG, W25Q32JVSSIQ offers higher bandwidth and future-proof addressing but requires QSPI controller support, while AT25DF321A-SSH-T provides pin-compatible SPI fallback with reduced feature set and no dual-output throughput benefit.
Availability
W25X32VSFIG is available at Aetrix Electronics and suitable for boot code storage, firmware update storage, and parameter/configuration storage requiring stable component supply and long-term industrial availability.
Supply support for W25X32VSFIG 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
Winbond Electronics is a Taiwan-based semiconductor company specializing in specialty memory solutions, including serial and parallel flash, PSRAM, and mobile DRAM.
The W25X series was designed for cost-sensitive, space-constrained embedded systems needing reliable, low-power serial NOR flash with enhanced SPI performance and flexible protection-targeting consumer electronics, industrial controls, and networking equipment.
FAQ
What is the maximum SPI clock frequency supported by the W25X32VSFIG?
The W25X32VSFIG supports a maximum SPI clock frequency of 75 MHz. This enables standard read operations at up to 75 Mbps and Fast Read Dual Output (instruction 3Bh) at up to 150 Mbps effective throughput. Timing compliance requires adherence to AC Electrical Characteristics in the datasheet, including setup/hold times relative to CLK edges.
Does the W25X32VSFIG support Quad SPI (QSPI) interface?
No, the W25X32VSFIG does not support Quad SPI. It implements standard SPI with single or dual output only-using pins /CS, CLK, DIO, and DO. Quad-capable successors like the W25Q32JVSSIQ use additional I/O pins (IO2/IO3) and different instruction sets; W25X32VSFIG lacks those pins and command definitions.
How many 4KB sectors does the W25X32VSFIG contain?
The W25X32VSFIG contains 1,024 uniform 4KB sectors. This derives from its total capacity of 32 M-bit (4,194,304 bytes) divided by 4,096 bytes per sector. Sector erase (20h instruction) operates on one 4KB sector at a time, enabling targeted updates without affecting adjacent firmware or data.
What is the purpose of the /HOLD pin on the W25X32VSFIG?
The /HOLD pin on the W25X32VSFIG allows the device to pause ongoing SPI operations while remaining selected (/CS low), preserving internal state such as partially filled page buffers or erase progress. This is essential when sharing the SPI bus with higher-priority peripherals, enabling deterministic resumption without reinitialization or data loss.
Can the W25X32VSFIG be used in automotive applications?
The W25X32VSFIG is rated for industrial temperature range (–40°C to +85°C) and meets standard reliability metrics (100,000 cycles, 20-year retention), but it is not AEC-Q100 qualified. For automotive applications requiring qualification, Winbond's automotive-grade equivalents (e.g., W25Q32JWxxMQ) should be evaluated instead of W25X32VSFIG.
W25X32VSFIG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Winbond Electronics Corporation
- Series:
- SpiFlash®
- Package/Case:
- 16-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- FLASH
- Technology:
- FLASH
- Memory Size:
- 32Mbit
- Memory Organization:
- 4M x 8
- Memory Interface:
- SPI
- Clock Frequency:
- 75 MHz
- Write Cycle Time - Word, Page:
- 3ms
- Access Time:
- -
- Voltage - Supply:
- 2.7V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
W25X32VSFIG FAQ
1.How can I place an order for W25X32VSFIG through Aetrix?
Please submit a Request for Quotation (RFQ) for W25X32VSFIG 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 W25X32VSFIG reliable?
The price and inventory of W25X32VSFIG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for W25X32VSFIG is usually 5 days.
3.What payment methods are accepted for W25X32VSFIG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for W25X32VSFIG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for W25X32VSFIG?
W25X32VSFIG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your W25X32VSFIG 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 W25X32VSFIG?
For technical support, including W25X32VSFIG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your W25X32VSFIG requirements.
6.How does Aetrix verify that W25X32VSFIG is sourced from the original manufacturer or authorized distributors?
All W25X32VSFIG 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 W25X32VSFIG meets industry standards.
7.What is the process for return or replacement of W25X32VSFIG?
All W25X32VSFIG units undergo pre-shipment inspection (PSI). If there is an issue with W25X32VSFIG, 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 W25X32VSFIG part is unused and in its original packaging.
Return procedure for W25X32VSFIG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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