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Winbond Electronics Corporation W25X32VZEIG
- Part No.:
- W25X32VZEIG
- Manufacturer:
- Winbond Electronics Corporation
- Category:
- Memory
- Package:
- 8-WDFN Exposed Pad
- Datasheet:
-
W25X32VZEIG.pdf
- Description:
- IC FLASH 32MBIT SPI 75MHZ 8WSON
- Quantity:
- Payment:
- Shipping:
Inventory:4,149
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Product details
Overview
W25X32VZEIG from Winbond is a 32M-bit (4MB) serial Flash memory IC with uniform 4KB sectors and dual-output SPI interface, operating from 2.7V to 3.6V, supporting up to 75MHz clock and 150Mbps data transfer via Fast Read Dual Output (3Bh), used for code storage and parameter retention in space-constrained embedded systems.
For engineers reviewing the W25X32VZEIG datasheet, W25X32VZEIG pinout, W25X32VZEIG application, or W25X32VZEIG equivalent, key selection criteria include sector-erase granularity (4KB), hardware/software write protection (/WP pin + status register), SOIC-300mil/16-pin package compatibility, and JEDEC ID support (9Fh).
Technical Context
The W25X32VZEIG implements a standard SPI bus with Mode 0 and Mode 3 support, using four signal lines: /CS, CLK, DIO, and DO. It executes Page Program (02h), Sector Erase (20h), Block Erase (D8h), and Chip Erase (C7h) instructions with internal timing control and BUSY flag reporting.
Dual-output operation is enabled exclusively by the Fast Read Dual Output (3Bh) instruction, repurposing the DIO pin as a second output during read cycles - all other instructions retain single-output SPI behavior. Write protection combines volatile WEL latch control, non-volatile BP/TB/SRP bits, and hardware /WP pin assertion.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 32 M-bit (4 MB) organized as 16,384 × 256-byte pages |
| Sector Size | Uniform 4 KB sectors (1024 sectors total); enables fine-grained data updates |
| Max Clock Frequency | 75 MHz SPI clock; enables 150 Mbps effective throughput with Fast Read Dual Output |
| Write Endurance | 100,000 program/erase cycles per sector |
| Data Retention | 20 years at +25°C; critical for long-life industrial firmware storage |
| Supply Voltage | 2.7 V to 3.6 V; compatible with 3.3 V logic systems without level shifting |
| Operating Temp | –40°C to +85°C; qualified for industrial ambient environments |
Pinout & Package
W25X32VZEIG uses an 16-pin SOIC 300-mil (package code SF) with 0.050" lead pitch and 0.300" body width. Pin 1 is /HOLD; pins 3–6 and 11–14 are NC; VCC (pin 2) and GND (pin 10) are decoupling-critical.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | /HOLD | Hold input: pauses active SPI transaction when asserted low; preserves internal state during bus arbitration |
| 2 | VCC | Power supply: 2.7–3.6 V; requires local 0.1 µF ceramic decoupling |
| 7 | /CS | Chip Select: active-low enable; must track VCC at power-up to avoid spurious writes |
| 8 | DO | Data Output: serial data output on falling CLK edge; high-impedance when /CS high |
| 9 | /WP | Write Protect: hardware lock for status register; active-low, requires pull-up if unused |
| 10 | GND | Ground reference: common return path for VCC and I/O signals |
| 15 | DIO | Data I/O: bidirectional SPI data line; serves as second output only during 3Bh instruction |
| 16 | CLK | Serial Clock: timing reference for all SPI operations; sampled on rising edge for input, falling for output |
Key Features
| Feature | Design Value |
|---|---|
| Dual Output SPI | Enables 150 Mbps read throughput via Fast Read Dual Output (3Bh), doubling standard SPI bandwidth for boot code shadowing |
| Hardware Write Protection | /WP pin disables status register writes when SRP=1, preventing accidental configuration changes in field-deployed systems |
| Flexible Memory Protection | Top/bottom selectable 4KB sector locking via TB/BP bits allows independent protection of firmware vs. user data regions |
| Low-Power Operation | 1 µA typical power-down current extends battery life in always-on IoT nodes without sacrificing wake-up latency |
| JEDEC Standard IDs | Supports 9Fh (JEDEC ID) and 90h (Manufacturer/Device ID) instructions for automated BOM verification and firmware auto-detection |
Applications
| Boot Code Storage | Firmware Update Storage |
|---|---|
Use Scenario: Storing primary bootloader and application firmware executed directly from SPI Flash on MCU reset. IC Role / Device Role / Timing Role: Non-volatile code storage device interfaced via SPI; provides deterministic read latency for XIP-capable controllers. Use Value: 4KB sector erase enables incremental firmware patching without full chip erase; 75MHz clock supports fast boot times under 100ms. | Use Scenario: Holding over-the-air (OTA) firmware images prior to validation and installation. IC Role / Device Role / Timing Role: Secure, field-updatable storage partition isolated from runtime code; accessed only during update windows. Use Value: Hardware /WP pin and SRP-controlled BP bits prevent corruption during power loss mid-update; 100K endurance ensures >10 years of field updates. |
| Configuration Parameter Storage | Industrial HMI Data Logging |
Use Scenario: Retaining calibration coefficients, network settings, and user preferences across power cycles. IC Role / Device Role / Timing Role: Parameter EEPROM replacement; accessed infrequently via SPI during initialization or settings change. Use Value: 4KB sector granularity allows atomic write of related parameters; software write protection prevents accidental overwrite during debug sessions. | Use Scenario: Buffering sensor timestamps and status events in programmable logic controllers (PLCs) with limited RAM. IC Role / Device Role / Timing Role: Circular buffer storage with wear-leveling handled by host firmware; erased in 4KB chunks as logs roll over. Use Value: 20-year data retention guarantees log integrity in unattended deployments; 1 µA power-down current minimizes standby power draw. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial Flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MX25L3206E | Same density (32Mb), 16-pin SOIC, but supports Quad SPI (QPI) mode and higher 104MHz clock; no /HOLD pin in SOIC-16 variant | Enables faster random reads in QPI mode; lacks dedicated hold function for multi-device SPI arbitration | Select MX25L3206E only if Quad SPI bandwidth is required and /HOLD is not needed in the system architecture. |
| S25FL032P | 32Mb density, 16-pin SOIC, supports both SPI and QPI; includes built-in ECC and configurable 256B/512B page sizes | Provides error correction for high-reliability logging; larger page size increases minimum write granularity | Choose S25FL032P where data integrity is critical and host firmware can accommodate variable page programming. |
Compared with W25X32VZEIG, MX25L3206E offers higher peak bandwidth but removes /HOLD - limiting SPI bus sharing flexibility - while S25FL032P adds ECC at the cost of increased complexity and reduced page-level write efficiency.
Availability
W25X32VZEIG is available at Aetrix Electronics and suitable for industrial control systems, embedded boot loaders, and IoT edge node firmware storage requiring stable component supply across extended product lifecycles.
Supply support for W25X32VZEIG 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 NOR Flash, PSRAM, and mobile DRAM.
The W25X series was designed for cost-sensitive, space-constrained embedded applications requiring reliable serial Flash with flexible protection and dual-output performance - targeting MCU-based consumer, industrial, and networking devices.
FAQ
What is the package type and pin count of the W25X32VZEIG?
The W25X32VZEIG uses a 16-pin SOIC 300-mil (package code SF) with 0.300-inch body width and 0.050-inch lead pitch. Pins 3–6 and 11–14 are no-connect; functional pins include /HOLD (1), VCC (2), /CS (7), DO (8), /WP (9), GND (10), DIO (15), and CLK (16). This package is explicitly listed in the Winbond datasheet for W25X32 devices.
Does the W25X32VZEIG support Quad SPI (QSPI) mode?
No, the W25X32VZEIG does not support Quad SPI. It supports standard SPI (single I/O) and dual-output SPI only - specifically via the Fast Read Dual Output (3Bh) instruction. Quad SPI functionality is absent from the instruction set, pinout, and electrical specifications in the official Winbond datasheet for the W25X16/32/64 family.
What is the maximum clock frequency supported by the W25X32VZEIG?
The W25X32VZEIG supports a maximum SPI clock frequency of 75 MHz. When using the Fast Read Dual Output (3Bh) instruction, this yields an effective data rate of 150 Mbps. This value is specified in the "AC Electrical Characteristics" section (Table 12.7) of the Winbond W25X16/32/64 datasheet Revision F.
How many 4KB sectors does the W25X32VZEIG contain?
The W25X32VZEIG contains 1,024 uniform 4KB sectors. This derives from its 32 M-bit (4 MB) capacity divided by 4 KB per sector (4,194,304 bytes ÷ 4,096 bytes = 1,024). The datasheet confirms this in Section 1 ("General Description") and the Status Register Memory Protection table for W25X32.
Is the W25X32VZEIG compatible with SPI Mode 0 and Mode 3?
Yes, the W25X32VZEIG supports both SPI Mode 0 (CPOL=0, CPHA=0) and Mode 3 (CPOL=1, CPHA=1). Data is sampled on the rising edge of CLK for input (DIO), and output (DO/DIO) is clocked on the falling edge. This dual-mode compatibility is explicitly stated in Section 10.1.1 ("SPI Modes") of the Winbond datasheet.
W25X32VZEIG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Winbond Electronics Corporation
- Series:
- SpiFlash®
- Package/Case:
- 8-WDFN Exposed Pad
- 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:
- 8-WSON (8x6)
W25X32VZEIG FAQ
1.How can I place an order for W25X32VZEIG through Aetrix?
Please submit a Request for Quotation (RFQ) for W25X32VZEIG 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 W25X32VZEIG reliable?
The price and inventory of W25X32VZEIG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for W25X32VZEIG is usually 5 days.
3.What payment methods are accepted for W25X32VZEIG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for W25X32VZEIG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for W25X32VZEIG?
W25X32VZEIG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your W25X32VZEIG 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 W25X32VZEIG?
For technical support, including W25X32VZEIG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your W25X32VZEIG requirements.
6.How does Aetrix verify that W25X32VZEIG is sourced from the original manufacturer or authorized distributors?
All W25X32VZEIG 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 W25X32VZEIG meets industry standards.
7.What is the process for return or replacement of W25X32VZEIG?
All W25X32VZEIG units undergo pre-shipment inspection (PSI). If there is an issue with W25X32VZEIG, 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 W25X32VZEIG part is unused and in its original packaging.
Return procedure for W25X32VZEIG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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