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Winbond Electronics Corporation W25X32VSSIG T&R
- Part No.:
- W25X32VSSIG T&R
- Manufacturer:
- Winbond Electronics Corporation
- Category:
- Memory
- Package:
- 8-SOIC (0.209", 5.30mm Width)
- Datasheet:
-
W25X32VSSIG T&R.pdf
- Description:
- IC FLASH 32MBIT SPI 75MHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,079
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Product details
Overview
W25X32VSSIG T&R from Winbond is a 32M-bit (4MB) serial NOR flash memory 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 W25X32VSSIG T&R datasheet, W25X32VSSIG T&R pinout, W25X32VSSIG T&R application, or W25X32VSSIG T&R equivalent, key selection considerations include sector erase granularity (4KB), hardware write protection via /WP pin, HOLD functionality for multi-device SPI sharing, and SOIC-8 (208-mil) package compatibility with legacy board layouts.
Technical Context
The W25X32VSSIG T&R implements a standard SPI bus with support for Modes 0 and 3, using four dedicated pins: /CS, CLK, DIO (bidirectional), and DO (unidirectional output). Dual-output operation is activated only during Fast Read Dual Output (3Bh) instruction, repurposing DIO as a second data output line while retaining single-line operation for all other commands.
It features a 16,384-page array (256 bytes/page), organized into 1,024 erasable 4KB sectors and 64 erasable 64KB blocks. Write protection combines software control (Status Register BP2–BP0, TB, SRP bits) with hardware inputs (/WP, /HOLD), enabling selective top/bottom array locking without firmware intervention.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 32 M-bit (4 MB) - supports full firmware images for mid-complexity microcontrollers |
| Sector Size | 4 KB uniform sectors - enables fine-grained data logging and configuration updates without erasing unrelated code |
| Max Clock Frequency | 75 MHz - delivers 150 Mbps effective throughput in dual-output mode, matching parallel flash performance |
| Write Endurance | 100,000 program/erase cycles - suitable for field-upgradable firmware and infrequently modified parameters |
| Data Retention | 20 years at +25°C - ensures long-term reliability in industrial and automotive control modules |
| Supply Voltage | 2.7 V to 3.6 V - compatible with 3.3 V logic domains and brown-out tolerant power rails |
| Operating Temp | −40°C to +85°C - qualified for extended temperature industrial and automotive under-hood applications |
Pinout & Package
W25X32VSSIG T&R uses an 8-pin SOIC-208-mil (Package Code SS) surface-mount package, 5.3 mm × 5.3 mm footprint, 1.75 mm height, lead-free and RoHS compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 /CS | Chip Select Input | Active-low enable: drives DO to high-Z when high; required low-to-high transition before first instruction after power-up |
| 2 DO | Serial Data Output | Unidirectional output for standard read and status operations; outputs on falling CLK edge |
| 3 /WP | Write Protect Input | Hardware lock for Status Register: prevents BP/SRP bit changes when low and SRP=1 |
| 4 GND | Ground Reference | Signal and power return path; must be low-impedance to ensure stable SPI timing and noise immunity |
| 5 DIO | Serial Data I/O | Bidirectional SPI data line: input for instructions/addresses, output during Fast Read Dual Output (3Bh) |
| 6 CLK | Serial Clock Input | Master-generated timing signal; latches DIO on rising edge, clocks DO/DIO on falling edge |
| 7 /HOLD | Hold Input | Pauses active SPI transaction when low and /CS is asserted; preserves internal state during bus arbitration |
| 8 VCC | Power Supply | Single 2.7–3.6 V supply; powers core logic and I/O buffers; requires local 0.1 µF decoupling |
Key Features
| Feature | Design Value |
|---|---|
| Dual Output SPI (3Bh) | Enables 150 Mbps read throughput by using DIO as second data line-critical for fast boot code shadowing |
| Hardware Write Protect (/WP) | Physically disables Status Register writes when asserted, preventing accidental firmware corruption during power transients |
| HOLD Function | Allows interruption of ongoing reads/writes without losing page buffer contents-essential for real-time interrupt handling in shared SPI buses |
| Uniform 4KB Sectors | Permits independent erasure of configuration data, calibration tables, or event logs without disturbing application code |
| JEDEC ID Support (9Fh) | Enables automatic device identification in bootloader firmware, simplifying multi-flash BOM management and field diagnostics |
Applications
| Boot Code Storage | Firmware Over-the-Air (OTA) |
|---|---|
Use Scenario: Storing primary bootloader and application firmware in embedded microcontrollers requiring cold-start execution. IC Role / Device Role / Timing Role: Non-volatile code repository accessed via SPI during reset sequence; supports fast dual-output read for minimal boot latency. Use Value: Eliminates need for external parallel flash or larger memory packages; 75 MHz SPI clock enables sub-100 ms full image load. | Use Scenario: Securely storing updated firmware images prior to validation and atomic swap in connected IoT gateways. IC Role / Device Role / Timing Role: Dedicated OTA staging partition with hardware write protection to prevent overwrite during power loss. Use Value: 4KB sector granularity allows isolated update of firmware segments; 100K-cycle endurance supports frequent field upgrades. |
| Industrial Parameter Logging | Automotive Diagnostic Memory |
Use Scenario: Recording sensor calibration offsets, maintenance counters, and fault history in programmable logic controllers (PLCs). IC Role / Device Role / Timing Role: Persistent data logger with sector-level erase control; accessed via polled SPI during idle CPU cycles. Use Value: Independent 4KB sectors allow timestamped log entries without erasing calibration data; −40°C to +85°C rating ensures operation in factory environments. | Use Scenario: Storing diagnostic trouble codes (DTCs), freeze frame data, and ECU configuration in automotive body control modules (BCMs). IC Role / Device Role / Timing Role: Safety-critical non-volatile memory with hardware /WP pin tied to system watchdog signal for fail-safe write blocking. Use Value: SRP+BP bits combined with /WP provide redundant write protection against EMI-induced corruption; 20-year retention meets automotive lifecycle requirements. |
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 |
|---|---|---|---|
| MX25L3206EM2I-12G | 32 M-bit, 104 MHz max clock, standard SPI only (no dual-output), 2.7–3.6 V, SOIC-8 | Lacks Fast Read Dual Output; lower max throughput (104 Mbps vs 150 Mbps); identical sector/block architecture | Select when dual-output is unnecessary and higher clock tolerance is preferred for timing margin |
| S25FL032P0XMFI001 | 32 M-bit, 80 MHz max clock, dual SPI supported, 2.7–3.6 V, SOIC-8, includes configurable dummy cycles | Requires additional configuration for dual SPI; supports QSPI-compatible command set; slightly longer tSE (400 ms vs 300 ms) | Select when migrating toward QSPI-capable platforms or requiring enhanced security features like secure OTP |
Compared with W25X32VSSIG T&R, MX25L3206EM2I-12G trades dual-output capability for higher clock tolerance, while S25FL032P0XMFI001 adds QSPI readiness and configurable timing but requires initialization overhead-both retain 4KB sector granularity and industrial temperature range.
Availability
W25X32VSSIG T&R is available at Aetrix Electronics and suitable for boot code storage, firmware OTA updates, and industrial parameter logging requiring stable component supply across extended product lifecycles.
Supply support for W25X32VSSIG T&R 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, RAM, and mobile DRAM, serving industrial, communications, and consumer markets since 1987.
The W25X series was designed specifically for cost-sensitive, space-constrained embedded systems needing reliable, low-power serial flash with flexible protection and fast read performance-targeting MCU-based applications where pin count and PCB area are critical.
FAQ
What is the maximum SPI clock frequency supported by the W25X32VSSIG T&R?
The W25X32VSSIG T&R supports a maximum SPI clock frequency of 75 MHz in standard and dual-output modes. When using the Fast Read Dual Output (3Bh) instruction, this enables an effective data rate of 150 Mbps. This specification is guaranteed over the full −40°C to +85°C operating temperature range and 2.7–3.6 V supply voltage, as verified in the AC Electrical Characteristics section of the official Winbond datasheet (Rev F, March 2007).
Does the W25X32VSSIG T&R support quad SPI (QSPI) interface?
No, the W25X32VSSIG T&R does not support quad SPI. It supports standard SPI (single I/O) and dual-output SPI (using DO and DIO simultaneously during Fast Read Dual Output instruction). Quad SPI capability requires four I/O lines and a different instruction set, which is not implemented in the W25X32VSSIG T&R or any device in the W25X family per the official datasheet.
How many 4KB sectors does the W25X32VSSIG T&R contain?
The W25X32VSSIG T&R contains exactly 1,024 uniform 4KB sectors, totaling 4,194,304 bytes (32 M-bit). This is derived from its 16,384-page organization (256 bytes/page) and confirmed in the General Description section of the datasheet: "The W25X32 array is organized into 16,384 programmable pages of 256-bytes each" and "has 1024 erasable sectors."
Can the W25X32VSSIG T&R be used with a 1.8 V microcontroller SPI interface?
No, the W25X32VSSIG T&R is not compatible with 1.8 V I/O signaling. Its absolute minimum VCC is 2.7 V, and all input thresholds (e.g., /CS, /WP, /HOLD, CLK, DIO) are specified relative to VCC, not fixed voltage levels. Driving its inputs from a 1.8 V MCU would violate VIH/VIL specifications and risk unreliable operation or damage. Level-shifting circuitry is required for interfacing with 1.8 V systems.
What is the purpose of the /HOLD pin on the W25X32VSSIG T&R?
The /HOLD pin on the W25X32VSSIG T&R pauses an active SPI transaction without resetting internal state-preserving partial page program or sector erase progress. It asserts high-impedance on DO and ignores CLK/DIO signals while /CS remains low. This enables deterministic bus arbitration in multi-peripheral SPI systems, such as when an interrupt service routine must temporarily seize the bus, and is functionally distinct from /CS deactivation which aborts operations.
W25X32VSSIG T&R 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
- 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-SOIC
W25X32VSSIG T&R FAQ
1.How can I place an order for W25X32VSSIG T&R through Aetrix?
Please submit a Request for Quotation (RFQ) for W25X32VSSIG T&R 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 W25X32VSSIG T&R reliable?
The price and inventory of W25X32VSSIG T&R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for W25X32VSSIG T&R is usually 5 days.
3.What payment methods are accepted for W25X32VSSIG T&R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for W25X32VSSIG T&R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for W25X32VSSIG T&R?
W25X32VSSIG T&R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your W25X32VSSIG T&R 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 W25X32VSSIG T&R?
For technical support, including W25X32VSSIG T&R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your W25X32VSSIG T&R requirements.
6.How does Aetrix verify that W25X32VSSIG T&R is sourced from the original manufacturer or authorized distributors?
All W25X32VSSIG T&R 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 W25X32VSSIG T&R meets industry standards.
7.What is the process for return or replacement of W25X32VSSIG T&R?
All W25X32VSSIG T&R units undergo pre-shipment inspection (PSI). If there is an issue with W25X32VSSIG T&R, 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 W25X32VSSIG T&R part is unused and in its original packaging.
Return procedure for W25X32VSSIG T&R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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