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Winbond Electronics Corporation W25Q32DWSSIG TR
- Part No.:
- W25Q32DWSSIG TR
- Manufacturer:
- Winbond Electronics Corporation
- Category:
- Memory
- Package:
- 8-SOIC (0.209", 5.30mm Width)
- Datasheet:
-
W25Q32DWSSIG TR.pdf
- Description:
- IC FLASH 32MBIT SPI/QUAD 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,712
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Product details
Overview
W25Q32DWSSIG TR from Winbond is a 1.8V, 32M-bit (4MB) serial NOR flash memory IC supporting Standard/Dual/Quad SPI and QPI interfaces. It delivers up to 104MHz SPI clock rate, 416MHz equivalent Quad I/O throughput, and true execute-in-place (XIP) capability for embedded code storage. Its 16,384 × 256-byte pages, uniform 4KB sector erase, and hardware write protection make it suitable for boot code, firmware image storage, and parameter logging in space-constrained industrial controllers.
For engineers reviewing the W25Q32DWSSIG TR datasheet, W25Q32DWSSIG TR pinout, W25Q32DWSSIG TR application, or W25Q32DWSSIG TR equivalent, key selection criteria include 1.7–1.95V supply compatibility, SOIC-8 (208-mil) package mapping, Quad Enable (QE) bit dependency for IO2/IO3 functionality, and JEDEC-compliant manufacturer/device ID read support (9Fh).
Technical Context
The W25Q32DWSSIG TR implements a flexible SPI command architecture with mode-exclusive operation: Standard/Dual/Quad SPI and QPI are mutually exclusive, requiring explicit enable/disable instructions (38h/FFh). Its status register includes non-volatile Quad Enable (QE) bit in Status Register-2, which reassigns /WP and /HOLD pins to IO2 and IO3 only when set - disabling hardware write protect and hold functions during Quad/QPI modes.
It supports multi-level erase granularity (4KB sector, 32KB/64KB block, full chip), program/erase suspend-resume, and four 256-byte security registers with OTP locks. Continuous Read Mode reduces instruction overhead to just 8 clocks for 24-bit address access, enabling deterministic XIP latency critical for real-time microcontroller boot sequences.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 32 M-bit (4,194,304 bytes) - sufficient for full MCU firmware images including bootloader, application, and configuration data. |
| Supply Voltage | 1.7 V to 1.95 V - compatible with modern low-voltage SoCs and PMICs; requires dedicated 1.8V rail design. |
| SPI Clock Rate | Up to 104 MHz - enables 50 MB/s continuous read throughput in Quad I/O mode, outperforming parallel NOR in bandwidth-per-pin. |
| Erase Granularity | Uniform 4 KB sectors (1,024 total), plus 32 KB and 64 KB blocks - allows fine-grained firmware update partitioning without erasing entire application space. |
| Endurance & Retention | 100,000 program/erase cycles; 20-year data retention - validated for long-life industrial deployments with frequent field updates. |
| Security Features | 64-bit unique ID, four 256-byte security registers with OTP lock, and software/hardware write protection - supports secure boot key binding and anti-cloning. |
| Operating Temperature | –40°C to +85°C - qualified for extended industrial temperature range without derating. |
Pinout & Package
W25Q32DWSSIG TR uses the 8-pin SOIC-208-mil package (Package Code SS), with pin 1 marked by notch or dot. All pins are electrically identical across SOIC and WSON variants; no PCB layout change required when migrating between SS and ZP/ZE packages.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| /CS | Chip Select Input | Active-low enable; device enters high-impedance output state and standby current (~1 µA) when high. |
| DO (IO1) | Data Output / Bidirectional I/O1 | Unidirectional output in Standard SPI; bidirectional in Dual/Quad/QPI; used for status/data reads on falling CLK edge. |
| /WP (IO2) | Write Protect Input / Bidirectional I/O2 | Hardware write protect active low in Standard/Dual SPI; becomes IO2 in Quad/QPI when QE=1 - disables WP function. |
| GND | Ground Reference | Primary return path for VCC and all I/O signals; must be low-inductance connection to avoid timing violations. |
| DI (IO0) | Data Input / Bidirectional I/O0 | Unidirectional input in Standard SPI; bidirectional in Dual/Quad/QPI; accepts instructions/addresses on rising CLK edge. |
| CLK | Serial Clock Input | Master-generated clock; supports SPI Modes 0 and 3; timing-critical path requiring controlled impedance routing. |
| /HOLD (IO3) | Hold Input / Bidirectional I/O3 | Pauses ongoing SPI transaction when low (Standard/Dual only); becomes IO3 in Quad/QPI when QE=1 - disables HOLD function. |
| VCC | Power Supply | 1.7–1.95 V nominal; requires local 100 nF ceramic decoupling within 5 mm of pin for stable high-speed operation. |
Key Features
| Feature | Design Value |
|---|---|
| Quad Peripheral Interface (QPI) | Reduces instruction overhead from 8 to 2 clocks per command, enabling faster command turnaround and higher effective bandwidth in XIP systems. |
| Continuous Read Mode | Supports wrap lengths of 8/16/32/64 bytes with fixed 8-clock address setup - eliminates repeated instruction sends for sequential code fetch. |
| Erase/Program Suspend-Resume | Allows background interrupt servicing during long erase/program operations without data corruption or timeout failure. |
| Top/Bottom Block Protection | Enables independent locking of boot sector (top) or user data (bottom) via TB bit and BP2–BP0 - prevents accidental overwrite of critical firmware. |
| JEDEC ID & Unique Serial Number | Reads standardized 3-byte JEDEC ID (9Fh) and factory-programmed 64-bit unique ID - enables automated BOM verification and device traceability. |
Applications
| Industrial PLC Firmware Storage | Automotive ADAS Boot Memory |
|---|---|
|
Use Scenario: Storing boot loader and safety-critical firmware in programmable logic controllers operating in harsh factory environments. IC Role / Device Role / Timing Role: Primary non-volatile code storage with execute-in-place (XIP) support, directly mapped into MCU address space for deterministic startup timing. Use Value: 4KB sector erase enables incremental firmware patching without full reflash; –40°C to +85°C rating ensures reliability across thermal cycling in control cabinets. |
Use Scenario: Holding boot code and sensor calibration data for vision-based driver assistance modules requiring ASIL-B compliance. IC Role / Device Role / Timing Role: Secure boot memory providing authenticated firmware load via integrated security registers and unique ID binding. Use Value: 100,000-cycle endurance supports over-the-air (OTA) update cycles throughout vehicle lifetime; hardware write protection prevents runtime corruption during power transients. |
| Medical Imaging Device Configuration | Smart Energy Meter Data Logging |
|
Use Scenario: Retaining calibration profiles, user preferences, and DICOM metadata in portable ultrasound and X-ray units. IC Role / Device Role / Timing Role: Parameter and configuration storage with fast random-access read capability using Fast Read Quad I/O (EBh) instruction. Use Value: 50 MB/s Quad I/O throughput enables rapid loading of multi-MB calibration tables; 20-year data retention meets medical device regulatory shelf-life requirements. |
Use Scenario: Logging time-stamped energy consumption data in ANSI C12.22-compliant smart meters deployed in outdoor utility enclosures. IC Role / Device Role / Timing Role: Non-volatile event log buffer supporting cyclic overwrite with wear leveling managed by host MCU. Use Value: Uniform 4KB sectors allow precise allocation of log partitions; low 4 mA active current extends battery backup runtime during mains outage. |
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, 1.65–2.0 V supply, 104 MHz max clock, SOIC-8 package; lacks QPI mode and security registers. | No QPI instruction set or 64-bit unique ID; limited for secure boot or high-bandwidth XIP use cases. | Choose for cost-sensitive designs where Quad I/O bandwidth and cryptographic binding are not required. |
| S25FL132K0XMFI011 | 32 M-bit, 2.7–3.6 V supply, 80 MHz max clock, SOIC-16 package; supports HyperBus interface but no QPI. | Higher voltage requirement incompatible with 1.8V systems; larger footprint increases PCB area vs. SOIC-8. | Choose only if existing platform uses Cypress-compatible HyperFlash ecosystem and 3.3V rail is available. |
Compared with MX25L3233FZNI-10G and S25FL132K0XMFI011, W25Q32DWSSIG TR uniquely combines 1.8V operation, QPI mode, and security registers in an industry-standard SOIC-8 footprint - making it optimal for next-generation low-power, secure, and high-throughput embedded boot memory.
Availability
W25Q32DWSSIG TR is available at Aetrix Electronics and suitable for industrial PLC firmware storage, automotive ADAS boot memory, and medical imaging device configuration requiring stable component supply across extended product lifecycles.
Supply support for W25Q32DWSSIG TR 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 flash, mobile DRAM, and code storage devices for embedded systems.
The W25Q series targets high-performance, low-voltage embedded applications demanding reliable code execution, secure firmware updates, and compact packaging - especially where SPI bus efficiency and XIP capability are critical.
FAQ
What is the supply voltage range for W25Q32DWSSIG TR?
The W25Q32DWSSIG TR operates from 1.7 V to 1.95 V. This narrow 1.8V nominal range ensures compatibility with modern ultra-low-power MCUs and PMICs but requires tight regulation - deviation beyond ±0.15 V risks timing violations or write failures. The device draws only 4 mA during active read/write and less than 1 µA in power-down mode, making it ideal for battery-backed or energy-harvesting systems.
Does W25Q32DWSSIG TR support execute-in-place (XIP) operation?
Yes, W25Q32DWSSIG TR supports true XIP through Continuous Read Mode and Fast Read Quad I/O (EBh) instructions. With as few as 8 clocks to initiate address access and 416 MHz equivalent throughput in Quad mode, it delivers deterministic latency for direct code execution from flash - eliminating RAM copy overhead in resource-constrained microcontrollers.
How does the Quad Enable (QE) bit affect pin functionality on W25Q32DWSSIG TR?
The non-volatile QE bit in Status Register-2 controls whether /WP and /HOLD pins become IO2 and IO3. When QE = 0, /WP and /HOLD retain hardware protection functions. When QE = 1, those pins switch to bidirectional I/O roles required for Quad SPI and QPI - disabling hardware write protect and hold. This behavior is documented in Section 7.3 and Figure 1a–1c of the datasheet.
What package type does W25Q32DWSSIG TR use, and is it pin-compatible with other W25Q32DW variants?
W25Q32DWSSIG TR uses the 8-pin SOIC-208-mil package (Package Code SS). It shares identical pinout and electrical characteristics with W25Q32DWZPIM (WSON-6x5mm) and W25Q32DWZEIM (WSON-8x6mm), enabling drop-in replacement without PCB redesign - provided thermal and mechanical constraints permit the alternate package.
Can W25Q32DWSSIG TR be used in automotive applications?
W25Q32DWSSIG TR is rated for –40°C to +85°C operation and meets industrial reliability standards (100,000 cycles, 20-year retention), but it is not AEC-Q100 qualified. For automotive ADAS or infotainment systems requiring formal qualification, Winbond offers the AEC-Q100 Grade 2 W25Q32JWxxIQ variant - W25Q32DWSSIG TR should only be deployed in non-safety-critical automotive subsystems with customer-specific validation.
W25Q32DWSSIG TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Winbond Electronics Corporation
- Series:
- SpiFlash®
- Package/Case:
- 8-SOIC (0.209", 5.30mm Width)
- Packaging:
- Tape & Reel (TR)
- 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:
- 3ms
- Access Time:
- -
- Voltage - Supply:
- 1.7V ~ 1.95V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
W25Q32DWSSIG TR FAQ
1.How can I place an order for W25Q32DWSSIG TR through Aetrix?
Please submit a Request for Quotation (RFQ) for W25Q32DWSSIG TR 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 W25Q32DWSSIG TR reliable?
The price and inventory of W25Q32DWSSIG TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for W25Q32DWSSIG TR is usually 5 days.
3.What payment methods are accepted for W25Q32DWSSIG TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for W25Q32DWSSIG TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for W25Q32DWSSIG TR?
W25Q32DWSSIG TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your W25Q32DWSSIG TR 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 W25Q32DWSSIG TR?
For technical support, including W25Q32DWSSIG TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your W25Q32DWSSIG TR requirements.
6.How does Aetrix verify that W25Q32DWSSIG TR is sourced from the original manufacturer or authorized distributors?
All W25Q32DWSSIG TR 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 W25Q32DWSSIG TR meets industry standards.
7.What is the process for return or replacement of W25Q32DWSSIG TR?
All W25Q32DWSSIG TR units undergo pre-shipment inspection (PSI). If there is an issue with W25Q32DWSSIG TR, 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 W25Q32DWSSIG TR part is unused and in its original packaging.
Return procedure for W25Q32DWSSIG TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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