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Winbond Electronics Corporation W25Q32FVSSIF
- Part No.:
- W25Q32FVSSIF
- Manufacturer:
- Winbond Electronics Corporation
- Category:
- Memory
- Package:
- 8-SOIC (0.209", 5.30mm Width)
- Datasheet:
-
W25Q32FVSSIF.pdf
- Description:
- IC FLASH 32MBIT SPI/QUAD 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,736
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Product details
Overview
W25Q32FVSSIF from Winbond is a 32M-bit (4MB) serial NOR flash memory IC supporting Standard/Dual/Quad SPI and QPI interfaces, operating at 2.7–3.6V with 104MHz max clock rate and 4KB uniform sector erase granularity. It delivers up to 50MB/s continuous read throughput and supports execute-in-place (XIP) for code storage in microcontroller boot loaders and firmware update systems.
For engineers reviewing the W25Q32FVSSIF datasheet, W25Q32FVSSIF pinout, W25Q32FVSSIF application, or W25Q32FVSSIF equivalent, key selection criteria include Quad Enable (QE) bit configuration, /HOLD vs /RESET pin behavior across package variants, 4KB sector protection granularity, and JEDEC SFDP register compatibility for automated configuration.
Technical Context
The W25Q32FVSSIF implements a dual-mode I/O architecture: standard SPI uses unidirectional DI/DO pins, while Dual/Quad SPI and QPI use bidirectional IO0–IO3 pins enabled by the non-volatile QE bit in Status Register-2. Its command set includes Fast Read Quad I/O (EBh), Word Read Quad I/O (E7h), and Octal Word Read Quad I/O (E3h), enabling true XIP operation with ≤8-clock instruction overhead.
Memory organization comprises 16,384 pages of 256 bytes each, grouped into 1,024 erasable 4KB sectors and 64 erasable 64KB blocks. Write protection combines hardware (/WP, /HOLD) and software control (BP2–BP0, TB, SEC, CMP, SRP0/SRP1), with three 256-byte OTP-locked security registers and a 64-bit unique ID per device.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 32 M-bit (4 MB) - sufficient for full MCU firmware images and parameter tables in space-constrained embedded designs. |
| Interface Modes | Standard SPI, Dual SPI, Quad SPI, QPI - enables flexible host controller compatibility and scalable bandwidth from 104MHz single-line to 416MHz quad-equivalent. |
| Max Clock Frequency | 104 MHz - supports 50 MB/s continuous read in Quad I/O mode, outperforming legacy parallel flash in pin-count-limited applications. |
| Erase Granularity | 4 KB sectors (1,024 total) - allows fine-grained firmware partitioning and secure over-the-air (OTA) update staging without full chip erase. |
| Write Endurance | 100,000 program/erase cycles - ensures reliable field updates over product lifetime in industrial logging and configuration storage. |
| Data Retention | 20 years at +25°C - meets long-term archival requirements for medical, automotive, and infrastructure equipment firmware. |
| Supply Voltage | 2.7 V to 3.6 V - compatible with 3.3 V logic domains and tolerant of brown-out conditions in battery-backed systems. |
| Power Consumption | 4 mA active, <1 µA power-down (typ.) - enables low-power sleep modes in always-on IoT edge nodes and portable devices. |
Pinout & Package
W25Q32FVSSIF is supplied in an 8-pin SOIC 208-mil package (Package Code SS), with pin 1 = /CS, pin 2 = DO (IO1), pin 3 = /WP (IO2), pin 4 = GND, pin 5 = DI (IO0), pin 6 = CLK, pin 7 = /HOLD or /RESET (IO3), pin 8 = VCC. Pin 7 functions as /HOLD in Standard/Dual SPI mode and becomes IO3 in Quad SPI mode when QE=1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| /CS (Pin 1) | Chip Select Input | Active-low enable: high impedance output and standby current when high; required high-to-low transition after power-up before instruction acceptance. |
| DO (IO1) (Pin 2) | Data Output / Bidirectional I/O | Unidirectional output in Standard SPI; bidirectional data lane 1 in Dual/Quad SPI and QPI; requires QE=1 for Quad I/O usage. |
| /WP (IO2) (Pin 3) | Write Protect Input / Bidirectional I/O | Hardware lock for status register writes in Standard/Dual SPI; repurposed as IO2 in Quad SPI when QE=1; active-low function. |
| GND (Pin 4) | Ground Reference | Primary return path for VCC and all I/O signals; must be low-impedance connection to avoid timing skew and noise coupling. |
| DI (IO0) (Pin 5) | Data Input / Bidirectional I/O | Unidirectional input in Standard SPI; bidirectional data lane 0 in Dual/Quad SPI and QPI; essential for instruction/address loading. |
| CLK (Pin 6) | Serial Clock Input | Edge-triggered timing reference for all SPI/QPI operations; rising edge for input, falling edge for output; max 104 MHz frequency. |
| /HOLD or /RESET (IO3) (Pin 7) | Hold/Reset Input / Bidirectional I/O | Pauses ongoing SPI transfer when low (active-low); configurable as hardware reset on 16-pin packages; becomes IO3 in Quad SPI when QE=1. |
| VCC (Pin 8) | Power Supply | Single 2.7–3.6 V supply powering core logic, charge pumps, and I/O buffers; decoupling capacitor required per datasheet layout guidelines. |
Key Features
| Feature | Design Value |
|---|---|
| Quad Peripheral Interface (QPI) | Reduces instruction overhead to 2 clocks per byte via 4-lane simultaneous I/O, enabling deterministic XIP execution without external cache. |
| Continuous Read Mode | Supports wrap lengths of 8/16/32/64 bytes with ≤8-clock address setup, eliminating inter-byte gaps for streaming audio or video buffer reads. |
| Erase/Program Suspend & Resume | Allows background firmware execution during long erase cycles (e.g., 64KB block erase ~100 ms), critical for real-time system responsiveness. |
| JEDEC SFDP Register | Enables automatic host controller configuration of timing parameters, voltage thresholds, and feature sets without hard-coded driver assumptions. |
| Three 256-byte Security Registers | OTP-lockable storage for cryptographic keys, calibration data, or device-specific credentials-prevents cloning and unauthorized firmware access. |
| 64-bit Unique Serial Number | Factory-programmed per-device identifier used for secure provisioning, license binding, and anti-counterfeiting in certified production lines. |
Applications
| Industrial PLC Firmware Storage | Automotive ADAS Boot Image |
|---|---|
|
Use Scenario: Storing boot firmware and safety-critical control algorithms in programmable logic controllers deployed in factory automation environments. IC Role / Device Role / Timing Role: Primary non-volatile code storage with execute-in-place (XIP) capability, directly mapped to MCU instruction bus via Quad SPI interface. Use Value: 4KB sector erase enables incremental firmware patching without disrupting operational runtime; 20-year data retention ensures reliability across 15+ year equipment lifecycles. |
Use Scenario: Holding boot code and sensor fusion firmware for camera/radar processing units in advanced driver-assistance systems. IC Role / Device Role / Timing Role: Secure, high-speed flash memory providing deterministic boot latency (<50 ms) via QPI mode and Continuous Read with 64-byte wrap. Use Value: 100,000 erase cycles support frequent OTA updates; 64-bit unique ID enables vehicle-level firmware version tracking and recall management. |
| Medical Device Configuration Archive | IoT Edge Node OTA Update Storage |
|
Use Scenario: Archiving calibration coefficients, patient history logs, and regulatory compliance metadata in portable diagnostic instruments. IC Role / Device Role / Timing Role: Parameter and data storage with hardware write protection (/WP pin) and individual sector lock (36h/39h instructions). Use Value: Top/bottom array protection and complement protect (CMP) bits prevent accidental overwrite of FDA-mandated calibration data during field servicing. |
Use Scenario: Hosting staged firmware binaries and delta update patches in battery-powered wireless sensors deployed in remote infrastructure monitoring. IC Role / Device Role / Timing Role: Low-power persistent storage with <1 µA power-down current and suspend/resume capability for background update installation. Use Value: 2.7–3.6 V operation extends battery life; 4KB sector granularity minimizes energy consumption during partial firmware writes in constrained energy budgets. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial NOR flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MX25L3233FZNI-10G | 32 M-bit, 104 MHz max clock, but lacks QPI mode and SFDP register; uses different status register layout and no OTP security registers. | Requires modified driver stack for command set and timing; unsuitable for XIP systems needing QPI or auto-configuration via SFDP. | Select only if QPI and security features are unused and legacy MXIC driver compatibility is prioritized. |
| S25FL132K0XMFI010 | 32 M-bit, 80 MHz max clock, supports HyperBus interface (not SPI/QPI); includes 256-byte secure OTP area but no 64-bit UID. | Needs HyperBus-capable host controller; incompatible with standard SPI/QPI MCU peripherals; lower bandwidth limits streaming use cases. | Choose only when HyperBus interface is available and higher pin count (16-pin SOIC) is acceptable for added debug/reset isolation. |
Compared with W25Q32FVSSIF, MX25L3233FZNI-10G omits QPI and SFDP-reducing XIP efficiency and increasing driver porting effort-while S25FL132K0XMFI010 trades SPI compatibility for HyperBus, requiring hardware redesign and sacrificing 64-bit UID-based traceability.
Availability
W25Q32FVSSIF is available at Aetrix Electronics and suitable for industrial PLC firmware storage, automotive ADAS boot image loading, and medical device configuration archiving requiring stable component supply across extended product lifecycles.
Supply support for W25Q32FVSSIF 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 manufacturer specializing in specialty memory solutions, including serial NOR/NAND flash, RAM, and mobile DRAM, serving industrial, automotive, and consumer markets since 1987.
The W25Q series was designed for high-reliability embedded systems requiring fast, secure, and pin-efficient code and data storage-emphasizing XIP capability, robust write protection, and long-term data integrity in harsh environments.
FAQ
What interface protocols does the W25Q32FVSSIF support?
The W25Q32FVSSIF supports Standard SPI, Dual SPI, Quad SPI, and Quad Peripheral Interface (QPI) protocols. QPI mode is enabled via the 38h instruction and requires the non-volatile Quad Enable (QE) bit in Status Register-2 to be set. In QPI mode, all four I/O lines (IO0–IO3) operate simultaneously, reducing instruction overhead and enabling true execute-in-place (XIP) functionality. The W25Q32FVSSIF does not support Octal SPI or HyperBus interfaces.
How does the /HOLD pin function differ between Standard SPI and Quad SPI modes on the W25Q32FVSSIF?
On the W25Q32FVSSIF, the /HOLD pin (Pin 7) functions as a pause control in Standard/Dual SPI mode: pulling it low halts ongoing transfers and places DO in high-impedance state. When the Quad Enable (QE) bit is set to 1, Pin 7 becomes IO3 and loses its /HOLD function. In that case, /HOLD is unavailable-this behavior is documented in Section 4.4 and Figure 1a of the datasheet. The 16-pin SOIC variant (SF package) provides a dedicated /RESET pin independent of QE setting.
Can the W25Q32FVSSIF be used for execute-in-place (XIP) applications?
Yes, the W25Q32FVSSIF supports true execute-in-place (XIP) operation via its Continuous Read Mode and QPI interface. With as few as 8 clocks to address memory and wrap lengths up to 64 bytes, it delivers deterministic, gapless instruction fetches. Combined with 104 MHz clock support and 416 MHz quad-equivalent bandwidth, the W25Q32FVSSIF enables direct CPU execution from flash-commonly used in ARM Cortex-M boot loaders and RISC-V firmware images where external RAM is limited.
What write protection mechanisms are available on the W25Q32FVSSIF?
The W25Q32FVSSIF offers layered write protection: hardware-level via /WP and /HOLD pins (active-low), and software-level via status register bits (BP2–BP0, TB, SEC, CMP, SRP0/SRP1). Sector/block locks can be applied individually (36h/39h) or globally (7Eh/98h), and security registers are protected by OTP locks. All protections remain effective across power cycles when configured non-volatilely-critical for safeguarding bootloader code and calibration data in W25Q32FVSSIF deployments.
Is the W25Q32FVSSIF pin-compatible with other W25Q32FV package variants?
No, the W25Q32FVSSIF (8-pin SOIC 208-mil) is not pin-compatible with 16-pin SOIC (SF), WSON (ZP/ZE), PDIP (DA), or TFBGA (TB/TC) variants. While the 8-pin variants (SS, ST, ZP, ZE, DA) share identical pin numbering and signal mapping, the 16-pin SOIC adds dedicated /RESET and NC pins, and TFBGA reassigns functions to ball grid positions. PCB layout must match the exact package code-W25Q32FVSSIF requires SOIC-8 footprint with 208-mil body width.
W25Q32FVSSIF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Winbond Electronics Corporation
- Series:
- SpiFlash®
- Package/Case:
- 8-SOIC (0.209", 5.30mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- FLASH
- Technology:
- FLASH - NOR
- Memory Size:
- 32Mbit
- Memory Organization:
- 4M x 8
- Memory Interface:
- SPI - Quad I/O, QPI
- Clock Frequency:
- 104 MHz
- Write Cycle Time - Word, Page:
- 50µs, 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:
- 8-SOIC
W25Q32FVSSIF FAQ
1.How can I place an order for W25Q32FVSSIF through Aetrix?
Please submit a Request for Quotation (RFQ) for W25Q32FVSSIF 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 W25Q32FVSSIF reliable?
The price and inventory of W25Q32FVSSIF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for W25Q32FVSSIF is usually 5 days.
3.What payment methods are accepted for W25Q32FVSSIF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for W25Q32FVSSIF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for W25Q32FVSSIF?
W25Q32FVSSIF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your W25Q32FVSSIF 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 W25Q32FVSSIF?
For technical support, including W25Q32FVSSIF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your W25Q32FVSSIF requirements.
6.How does Aetrix verify that W25Q32FVSSIF is sourced from the original manufacturer or authorized distributors?
All W25Q32FVSSIF 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 W25Q32FVSSIF meets industry standards.
7.What is the process for return or replacement of W25Q32FVSSIF?
All W25Q32FVSSIF units undergo pre-shipment inspection (PSI). If there is an issue with W25Q32FVSSIF, 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 W25Q32FVSSIF part is unused and in its original packaging.
Return procedure for W25Q32FVSSIF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
W25Q32FVSSIF Tags
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