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Winbond Electronics Corporation W25Q32JWSNIQ
- Part No.:
- W25Q32JWSNIQ
- Manufacturer:
- Winbond Electronics Corporation
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
W25Q32JWSNIQ.pdf
- Description:
- IC FLASH 32MBIT SPI/QUAD 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,131
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Product details
Overview
W25Q32JWSNIQ from Winbond is a 32M-bit (4MB) 1.8V serial NOR flash memory supporting Standard, Dual, and Quad SPI interfaces with up to 133MHz clock rate and 66MB/s continuous read throughput. It features uniform 4KB sectors, 100K program-erase cycles, 20-year data retention, and hardware write protection via /WP and /HOLD pins. It is used in embedded boot code storage, XIP execution, and firmware parameter logging for industrial controllers.
For engineers reviewing the W25Q32JWSNIQ datasheet, W25Q32JWSNIQ pinout, W25Q32JWSNIQ application, or W25Q32JWSNIQ equivalent, key selection criteria include Quad SPI enable (QE bit), 1.7–1.95V supply compatibility, sector-level erase granularity, security register support, and SOIC-208-mil package footprint validation.
Technical Context
The W25Q32JWSNIQ implements a SPI-compatible command set with dedicated instruction opcodes for Fast Read Quad I/O (EBh), Quad Input Page Program (32h), and Erase/Program Suspend (75h). Its internal architecture includes a 256-byte page buffer, SFDP register for discoverable parameters, and three 256-byte security registers accessible via dedicated instructions (42h/48h/44h).
It supports SPI modes 0 and 3, with configurable output driver strength (DRV1/DRV0 bits), volatile/non-volatile status register bits (BP2–BP0, TB, SEC, CMP, SRP), and hardware reset capability only on TFBGA/SOIC-16 packages - not present in the SOIC-208-mil W25Q32JWSNIQ variant per datasheet Section 4.6 and Package Code SS definition.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 32 M-bit (4 MB), organized as 16,384 × 256-byte pages |
| Supply Voltage | 1.7 V to 1.95 V - enables low-power operation in battery-backed or energy-constrained industrial systems |
| Max Clock Frequency | 133 MHz for Quad I/O - delivers 532 Mbps effective throughput using EBh instruction |
| Erase Granularity | 4 KB sectors (1,024 total), 32 KB blocks (512), 64 KB blocks (64) - supports fine-grained firmware update partitioning |
| Endurance & Retention | 100,000 program-erase cycles; >20 years data retention at 85°C - validated for long-life industrial deployments |
| Operating Temperature | −40°C to +85°C - qualified for Industrial Grade applications per datasheet front page |
| Security Features | 64-bit unique ID, SFDP register, three 256-byte security registers, OTP lock capability (special order) |
Pinout & Package
W25Q32JWSNIQ uses an 8-pin SOIC-208-mil package (Package Code SS), with gull-wing leads and 1.27 mm pitch. Pin 1 is /CS; pin 4 is GND; pin 8 is VCC. The /RESET pin is not implemented in this SOIC variant per datasheet Section 4.6 and Figure 1a.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| /CS (Pin 1) | Chip Select Input | Active-low enable signal - must transition high→low before instruction acceptance; tracks VCC during power-up/down |
| DO (IO1) (Pin 2) | Data Output / Bidirectional I/O | Unidirectional output in Standard SPI; becomes IO1 in Dual/Quad mode when QE=1 |
| /WP (IO2) (Pin 3) | Write Protect Input / Bidirectional I/O | Active-low hardware lock for status register; becomes IO2 in Quad mode when QE=1 |
| GND (Pin 4) | Ground Reference | Primary return path for VCC and I/O signals; requires low-impedance PCB connection |
| DI (IO0) (Pin 5) | Data Input / Bidirectional I/O | Unidirectional input in Standard SPI; becomes IO0 in Dual/Quad mode when QE=1 |
| CLK (Pin 6) | Serial Clock Input | Edge-triggered timing reference for all SPI operations; supports Mode 0 and Mode 3 |
| /HOLD (IO3) (Pin 7) | Hold Input / Bidirectional I/O | Pauses ongoing transfers while /CS active; becomes IO3 in Quad mode when QE=1; not available if QE=1 |
| VCC (Pin 8) | Power Supply | 1.7–1.95 V nominal supply - must ramp monotonically; decoupling capacitor required near pin |
Key Features
| Feature | Design Value |
|---|---|
| Quad SPI Enable (QE bit) | Non-volatile Status Register-2 bit enabling IO2 (/WP) and IO3 (/HOLD) for 4-line data transfer |
| Erase/Program Suspend | 75h/7Ah instructions allow pausing long erase/program operations to service higher-priority reads |
| Individual Sector Lock | 36h/39h/3Dh instructions provide per-sector write lock/unlock control beyond BP/TB protection |
| Security Register Access | Dedicated 42h/48h/44h opcodes for programming, reading, and erasing three 256-byte protected registers |
| SFDP Register Support | 5Ah instruction returns JEDEC-standard Flash Parameter Table - enables automatic driver configuration |
Applications
| Industrial PLC Firmware Storage | Medical Device Boot Image |
|---|---|
Use Scenario: Storing boot loader and real-time OS kernel in programmable flash for deterministic startup in programmable logic controllers. IC Role / Device Role / Timing Role: Primary non-volatile code storage device accessed via Quad SPI XIP during cold boot and firmware updates. Use Value: 4KB sector erase enables atomic patching of bootloader without disrupting runtime firmware partitions. | Use Scenario: Holding certified, version-signed boot image and calibration data in Class II medical diagnostic equipment. IC Role / Device Role / Timing Role: Secure, tamper-resistant firmware repository with unique ID and security registers for audit traceability. Use Value: 64-bit unique ID and OTP-capable security registers satisfy IEC 62304 traceability and data integrity requirements. |
| Smart Energy Meter Parameter Log | Automotive Body Control Module (BCM) |
Use Scenario: Logging time-stamped voltage/current measurements and tariff schedules in DIN-rail mounted utility meters. IC Role / Device Role / Timing Role: High-endurance data logger using 100K-cycle sectors for daily parameter writes over 15+ year field life. Use Value: 20-year data retention at 85°C ensures meter calibration logs remain valid across full product lifecycle. | Use Scenario: Storing vehicle-specific configuration tables and CAN firmware images in automotive BCMs operating at −40°C to +85°C. IC Role / Device Role / Timing Role: Dual SPI-configured code storage interfaced to ARM Cortex-M7 MCU for fast boot and OTA updates. Use Value: 133MHz Quad SPI read speed reduces boot time by >40% vs. standard SPI, meeting ISO 16750-2 cold-cranking timing 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 |
|---|---|---|---|
| MX25L3233FZBI-10G | 32Mb, 1.65–2.0V supply, 104MHz max Quad SPI, no /HOLD pin in 8-pin SOIC | Lacks /HOLD functionality and suspend/resume instructions; no security registers | Select when /HOLD and security features are unnecessary and lower cost is prioritized |
| S25FL132K0XMFI010 | 32Mb, 2.7–3.6V supply, 80MHz Quad SPI, supports HyperBus interface option | Requires higher voltage; incompatible with 1.8V systems; offers HyperFlash mode for higher bandwidth | Choose only for 3V systems needing HyperBus compatibility - not drop-in for W25Q32JWSNIQ |
Compared with MX25L3233FZBI-10G and S25FL132K0XMFI010, the W25Q32JWSNIQ uniquely combines 1.8V operation, /HOLD support, erase/program suspend, and integrated security registers - making it the only option among the three qualified for secure, low-voltage industrial firmware storage with runtime flexibility.
Availability
W25Q32JWSNIQ is available at Aetrix Electronics and suitable for industrial PLC firmware storage, medical device boot image hosting, and smart energy meter parameter logging requiring stable component supply across extended temperature and long-lifecycle programs.
Supply support for W25Q32JWSNIQ 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 DRAM, mobile DRAM, and serial flash memory solutions since 1987.
The W25Q series targets industrial, automotive, and networking applications requiring high-speed, low-voltage, and secure serial flash - designed specifically for XIP, firmware storage, and parameter logging in resource-constrained environments.
FAQ
What is the supply voltage range supported by the W25Q32JWSNIQ?
The W25Q32JWSNIQ operates from 1.7 V to 1.95 V, as specified in Section 9.2 of its datasheet. This narrow 1.8V nominal range enables ultra-low power consumption (<0.1 µA typical in power-down) and compatibility with modern low-voltage microcontrollers and PMICs. Operation outside this range may cause undefined behavior or permanent damage.
Does the W25Q32JWSNIQ support hardware reset via /RESET pin?
No, the W25Q32JWSNIQ does not support hardware reset. Per datasheet Section 4.6 and Figure 1a, the /RESET pin is only available on SOIC-16 and TFBGA packages - not on the SOIC-208-mil (SS) variant used in W25Q32JWSNIQ. Reset must be performed via software sequence (66h followed by 99h).
How is Quad SPI mode enabled on the W25Q32JWSNIQ?
Quad SPI mode is enabled by setting the Quad Enable (QE) bit in Status Register-2 using the Write Status Register-2 (31h) instruction. Once QE=1, pins /WP (Pin 3) and /HOLD (Pin 7) become IO2 and IO3 respectively, enabling four-line data transfer. The QE bit is non-volatile and persists across power cycles unless cleared.
What erase block sizes are available on the W25Q32JWSNIQ?
The W25Q32JWSNIQ supports four erase granularities: 4 KB sectors (1,024 total), 32 KB blocks (512), 64 KB blocks (64), and full chip erase. Sector erase (20h) is most commonly used for firmware patching; 64 KB block erase (D8h) suits larger image updates. All erase operations are internally timed and require polling BUSY bit.
Can the W25Q32JWSNIQ be used for secure firmware storage?
Yes, the W25Q32JWSNIQ supports multiple security mechanisms: 64-bit unique ID per device, three 256-byte one-time-programmable security registers (accessed via 42h/48h/44h), individual sector lock/unlock (36h/39h), and non-volatile status register protection (SRP/SRL bits). These features enable cryptographic key storage and firmware integrity enforcement in certified industrial systems.
W25Q32JWSNIQ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Winbond Electronics Corporation
- Series:
- SpiFlash®
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- 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
- Clock Frequency:
- 133 MHz
- Write Cycle Time - Word, Page:
- 5ms
- Access Time:
- 6 ns
- Voltage - Supply:
- 1.7V ~ 1.95V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
W25Q32JWSNIQ FAQ
1.How can I place an order for W25Q32JWSNIQ through Aetrix?
Please submit a Request for Quotation (RFQ) for W25Q32JWSNIQ 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 W25Q32JWSNIQ reliable?
The price and inventory of W25Q32JWSNIQ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for W25Q32JWSNIQ is usually 5 days.
3.What payment methods are accepted for W25Q32JWSNIQ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for W25Q32JWSNIQ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for W25Q32JWSNIQ?
W25Q32JWSNIQ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your W25Q32JWSNIQ 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 W25Q32JWSNIQ?
For technical support, including W25Q32JWSNIQ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your W25Q32JWSNIQ requirements.
6.How does Aetrix verify that W25Q32JWSNIQ is sourced from the original manufacturer or authorized distributors?
All W25Q32JWSNIQ 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 W25Q32JWSNIQ meets industry standards.
7.What is the process for return or replacement of W25Q32JWSNIQ?
All W25Q32JWSNIQ units undergo pre-shipment inspection (PSI). If there is an issue with W25Q32JWSNIQ, 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 W25Q32JWSNIQ part is unused and in its original packaging.
Return procedure for W25Q32JWSNIQ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
W25Q32JWSNIQ Tags
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M24C02-WMN6TP
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