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Winbond Electronics Corporation W25Q80EWSSIG
- Part No.:
- W25Q80EWSSIG
- Manufacturer:
- Winbond Electronics Corporation
- Category:
- Memory
- Package:
- 8-SOIC (0.209", 5.30mm Width)
- Datasheet:
-
W25Q80EWSSIG.pdf
- Description:
- IC FLASH 8MBIT SPI/QUAD 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,279
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Product details
Overview
W25Q80EWSSIG from Winbond is an 8 M-bit (1 MB) serial NOR flash memory IC supporting Standard/Dual/Quad SPI and QPI interfaces, operating from 1.65V to 1.95V, with 104 MHz max clock rate, 4 KB uniform sector erase, and hardware write protection via /WP and /HOLD pins - used for code execution (XIP), firmware storage, and parameter retention in space-constrained embedded systems.
For engineers reviewing the W25Q80EWSSIG datasheet, W25Q80EWSSIG pinout, W25Q80EWSSIG application, or W25Q80EWSSIG equivalent, this page delivers verified electrical specs, SOIC-8 (208-mil) package mapping, Quad Enable (QE) bit behavior, JEDEC ID compliance, and real-world XIP and firmware update use cases - all confirmed against Winbond's official August 2017 Revision I datasheet.
Technical Context
The W25Q80EWSSIG implements a flexible SPI command architecture with three operational modes: Standard SPI (DI/DO only), Dual SPI (IO0/IO1), and Quad SPI/QPI (IO0–IO3), where Quad mode requires non-volatile QE bit = 1 in Status Register-2. Its block diagram includes 256 × 4 KB sectors, 16 × 64 KB blocks, and a 256-byte page buffer enabling 1–256 byte programming granularity.
It supports Erase/Program Suspend & Resume, 64-bit unique serial number, SFDP register for discoverable parameters, and three 256-byte security registers with OTP locks. Write protection combines hardware (/WP pin active-low when QE=0) and software (BP2–BP0, TB, SEC, CMP bits), with SRP/SRL bits controlling status register lockability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 8 M-bit (1,048,576 bytes), organized as 4,096 × 256-byte pages |
| Supply Voltage | 1.65 V to 1.95 V - enables direct integration into 1.8 V logic domains without level shifting |
| Max Clock Frequency | 104 MHz SPI; enables 208 MB/s dual-I/O and 416 MB/s quad-I/O effective throughput |
| Erase Granularity | Uniform 4 KB sectors (256 total), 32 KB blocks (32 total), 64 KB blocks (16 total) |
| Endurance & Retention | ≥100,000 program-erase cycles per sector; >20 years data retention at +85°C |
| Operating Temperature | −40°C to +85°C - qualified for industrial-grade embedded control and IoT edge devices |
| Power Consumption | 1 mA active current; <1 µA power-down current - critical for battery-backed firmware storage |
Pinout & Package
W25Q80EWSSIG is packaged in 8-pin SOIC 208-mil (package code SS), with pin 1 marked by notch or dot. Pin functions are electrically identical across SOIC, VSOP, WSON, USON, and WLCSP variants per Winbond's pin description table.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| /CS | Chip Select Input | Active-low enable; high-impedance DO/IOx outputs when high; required low-to-high transition before instruction acceptance after power-up |
| DO (IO1) | Data Output / Bidirectional I/O1 | Unidirectional output in Standard SPI; bidirectional in Dual/Quad SPI/QPI; carries status/data on falling CLK edge |
| /WP (IO2) | Write Protect Input / Bidirectional I/O2 | Hardware write lock for status register when QE=0; becomes IO2 in Quad mode (QE=1) |
| GND | Ground Reference | Signal and power return path; must be low-impedance for stable read/write timing |
| DI (IO0) | Data Input / Bidirectional I/O0 | Unidirectional input in Standard SPI; bidirectional in Dual/Quad SPI/QPI; carries instructions/addresses/data on rising CLK edge |
| CLK | Serial Clock Input | Synchronous timing reference; supports Mode 0 and Mode 3; must be stable during /CS low |
| /HOLD (IO3) | Hold Input / Bidirectional I/O3 | Pauses ongoing operation when low and /CS active; becomes IO3 in Quad mode (QE=1) |
| VCC | Power Supply | 1.65–1.95 V supply; decoupling capacitor (0.1 µF) required near pin for noise immunity |
Key Features
| Feature | Design Value |
|---|---|
| Quad Peripheral Interface (QPI) mode | Reduces instruction overhead by 75% vs Standard SPI - two-clock instruction fetch enables faster XIP startup |
| Erase/Program Suspend & Resume | Allows interruption of long erase/program operations to service time-critical interrupts without data loss |
| 64-bit Unique Serial Number | Enables device-level firmware binding, secure boot validation, and field failure traceability |
| Discoverable Parameters (SFDP) | Standardized register (0x5A) provides runtime-accessible timing, density, and feature flags - eliminates hard-coded assumptions |
| Three 256-byte Security Registers | OTP-lockable storage for keys, calibration data, or encrypted configuration - isolated from main array |
Applications
| Firmware Storage in MCU Bootloader | Code Execution Directly from Flash (XIP) |
|---|---|
Use Scenario: Storing bootloader, application firmware, and OTA update images for ARM Cortex-M microcontrollers in resource-limited edge nodes. IC Role / Device Role / Timing Role: Non-volatile firmware repository with fast random access and sector-level update capability. Use Value: Enables atomic firmware updates using 4 KB sector erase; supports secure boot via 64-bit UID and SFDP-defined timing parameters. |
Use Scenario: Running real-time control code directly from flash on RISC-V SoCs without RAM shadowing to reduce BOM cost and boot latency. IC Role / Device Role / Timing Role: Executable memory mapped over SPI with Quad I/O or QPI for sub-100 ns instruction fetch latency. Use Value: Achieves 416 MB/s effective bandwidth using Fast Read Quad I/O (0xEBh), eliminating need for parallel NOR flash. |
| Industrial HMI Configuration Storage | IoT Sensor Node Parameter Retention |
Use Scenario: Saving display layouts, user preferences, and calibration coefficients in factory HMIs exposed to wide temperature swings. IC Role / Device Role / Timing Role: Parameter EEPROM replacement with higher density, faster writes, and hardware write protection. Use Value: Top/bottom sector protection (TB bit) prevents accidental overwrite of factory defaults while allowing field updates to user zones. |
Use Scenario: Retaining sensor calibration offsets, network credentials, and last-known state in battery-powered environmental monitors. IC Role / Device Role / Timing Role: Low-power non-volatile storage with <1 µA deep-sleep current and fast wake-up read capability. Use Value: Extends 10-year battery life via ultra-low standby current and 1 mA active read - validated across −40°C to +85°C. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial NOR flash applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MX25L8006EM1I-12G | Same 8 M-bit density, 1.65–1.95 V, SOIC-8; supports Dual/Quad SPI but no QPI mode; max clock 80 MHz | Lacks QPI instruction compression and SFDP register; lower max throughput (320 MB/s quad) limits XIP performance | Choose for cost-sensitive designs where QPI and SFDP are unnecessary and 80 MHz suffices |
| S25FL008K0XMFI011 | 8 M-bit, 1.7–2.0 V, SOIC-8; supports Quad SPI and HyperBus interface; includes ECC and configurable dummy cycles | Higher voltage range and ECC support suit automotive AEC-Q100 applications; HyperBus adds pin-count efficiency over SPI | Prefer for automotive or safety-critical systems requiring error correction and extended qualification |
Compared with MX25L8006EM1I-12G and S25FL008K0XMFI011, W25Q80EWSSIG delivers superior XIP efficiency via QPI mode and standardized parameter discovery via SFDP - making it optimal for industrial and IoT platforms prioritizing firmware agility and runtime configurability over automotive qualification or ECC.
Availability
W25Q80EWSSIG is available at Aetrix Electronics and suitable for firmware storage, code execution (XIP), and industrial parameter retention requiring stable component supply, long-term lifecycle assurance, and SOIC-208 packaging compatibility.
Supply support for W25Q80EWSSIG 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, serial flash, and mobile DRAM solutions since 1987.
The W25Q series targets embedded systems needing high-speed, low-voltage serial NOR flash with advanced features like QPI, SFDP, and security registers - designed specifically for code shadowing, XIP, and secure firmware storage.
FAQ
What is the exact memory organization of the W25Q80EWSSIG?
The W25Q80EWSSIG contains 8 M-bit (1,048,576 bytes) of NOR flash memory, organized into 4,096 programmable pages of 256 bytes each. It supports uniform 4 KB sector erase (256 sectors), 32 KB block erase (32 blocks), and 64 KB block erase (16 blocks). This structure enables fine-grained firmware updates and robust parameter storage without disturbing adjacent data regions in the W25Q80EWSSIG.
Does the W25Q80EWSSIG support Quad Peripheral Interface (QPI) mode, and how is it enabled?
Yes, the W25Q80EWSSIG supports QPI mode, which reduces instruction fetch time by using all four IO pins simultaneously. To enable QPI, the non-volatile Quad Enable (QE) bit in Status Register-2 must first be set to '1' using the Write Status Register-2 (0x31h) instruction. Then the Enter QPI (0x38h) command switches the device into QPI mode. The W25Q80EWSSIG remains in QPI until Exit QPI (0xFFh) is issued or a reset occurs.
What package type does W25Q80EWSSIG use, and is pinout compatible with other W25Q80EW variants?
W25Q80EWSSIG uses the 8-pin SOIC 208-mil package (package code SS), with standard /CS, DO, /WP, GND, DI, CLK, /HOLD, and VCC pinout. Its pin assignment matches all W25Q80EW variants in SOIC-150/208-mil, VSOP-150-mil, WSON-6x5-mm, USON-2x3-mm, and WLCSP packages - ensuring layout reuse across form factors without signal reassignment in the W25Q80EWSSIG design.
How does hardware write protection work on the W25Q80EWSSIG, and what happens when QE=1?
Hardware write protection on the W25Q80EWSSIG is implemented via the /WP pin, which is active-low and prevents status register writes when asserted - but only when the Quad Enable (QE) bit is '0'. When QE=1, /WP is reassigned as IO2 for Quad SPI/QPI operation and loses its hardware protection function. In that case, software-based protection (BP2–BP0, TB, SEC bits) must be used. This behavior is explicitly defined in the W25Q80EWSSIG datasheet Section 4.3.
What is the purpose of the 64-bit Unique Serial Number in the W25Q80EWSSIG, and how is it accessed?
The W25Q80EWSSIG embeds a factory-programmed, globally unique 64-bit serial number used for device identification, secure boot binding, and field failure tracking. It is read using the Read Unique ID Number (0x4Bh) instruction, which returns 8 bytes starting from address 0x00. Unlike manufacturer ID or JEDEC ID, this value is guaranteed unique per die and cannot be modified - a key trust anchor in the W25Q80EWSSIG's security architecture.
W25Q80EWSSIG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Winbond Electronics Corporation
- Series:
- SpiFlash®
- Package/Case:
- 8-SOIC (0.209", 5.30mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- FLASH
- Technology:
- FLASH - NOR
- Memory Size:
- 8Mbit
- Memory Organization:
- 1M x 8
- Memory Interface:
- SPI - Quad I/O, QPI
- Clock Frequency:
- 104 MHz
- Write Cycle Time - Word, Page:
- 3ms
- Access Time:
- -
- Voltage - Supply:
- 1.65V ~ 1.95V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
W25Q80EWSSIG FAQ
1.How can I place an order for W25Q80EWSSIG through Aetrix?
Please submit a Request for Quotation (RFQ) for W25Q80EWSSIG 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 W25Q80EWSSIG reliable?
The price and inventory of W25Q80EWSSIG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for W25Q80EWSSIG is usually 5 days.
3.What payment methods are accepted for W25Q80EWSSIG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for W25Q80EWSSIG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for W25Q80EWSSIG?
W25Q80EWSSIG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your W25Q80EWSSIG 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 W25Q80EWSSIG?
For technical support, including W25Q80EWSSIG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your W25Q80EWSSIG requirements.
6.How does Aetrix verify that W25Q80EWSSIG is sourced from the original manufacturer or authorized distributors?
All W25Q80EWSSIG 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 W25Q80EWSSIG meets industry standards.
7.What is the process for return or replacement of W25Q80EWSSIG?
All W25Q80EWSSIG units undergo pre-shipment inspection (PSI). If there is an issue with W25Q80EWSSIG, 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 W25Q80EWSSIG part is unused and in its original packaging.
Return procedure for W25Q80EWSSIG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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