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Winbond Electronics Corporation W25Q64CVSSIG
- Part No.:
- W25Q64CVSSIG
- Manufacturer:
- Winbond Electronics Corporation
- Category:
- Memory
- Package:
- 8-SOIC (0.209", 5.30mm Width)
- Datasheet:
-
W25Q64CVSSIG.pdf
- Description:
- IC FLASH 64MBIT SPI/QUAD 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,092
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Product details
Overview
W25Q64CVSSIG from Winbond is a 64M-bit (8MB) serial NOR flash memory IC supporting Standard, Dual, and Quad SPI interfaces with 4KB uniform sector architecture, 80MHz max clock frequency, and 1µA typical power-down current. It enables execute-in-place (XIP) code execution, firmware storage, and parameter retention in space-constrained embedded systems.
For engineers reviewing the W25Q64CVSSIG datasheet, W25Q64CVSSIG pinout, W25Q64CVSSIG application, or W25Q64CVSSIG equivalent, key selection criteria include Quad SPI enable (QE bit), 4KB sector erase granularity, JEDEC ID compatibility, and SOIC-208-mil (SS) package pin mapping for board layout and firmware driver integration.
Technical Context
The W25Q64CVSSIG implements a SPI command set compliant with JEDEC JESD216 SFDP v1.5, supporting standard Mode 0/3 operation, dual I/O (IO0/IO1), and quad I/O (IO0–IO3) when the non-volatile Quad Enable (QE) bit in Status Register-2 is set. Its internal architecture includes a 256-byte page buffer, 2,048 erasable 4KB sectors, and three 256-byte one-time-programmable security registers.
It features hardware write protection via /WP and /HOLD pins (active-low), programmable block protection (BP2–BP0, TB, SEC), volatile/non-volatile status register bits, and a 64-bit unique serial number. Erase/program suspend/resume capability allows interruptible flash operations without data loss.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 64 M-bit (8 MB), organized as 32,768 × 256-byte pages |
| Interface Support | Standard SPI (DI/DO), Dual SPI (IO0/IO1), Quad SPI (IO0–IO3) with QE bit enabled |
| Max Clock Frequency | 80 MHz - enables 320 MHz equivalent throughput in Quad I/O mode using Fast Read Quad I/O (EBh) |
| Erase Granularity | Uniform 4 KB sectors (2,048 total), plus 32 KB and 64 KB blocks - supports fine-grained firmware partitioning |
| Endurance & Retention | 100,000 program/erase cycles; 20-year data retention at +85°C - validated for industrial temperature range |
| Supply Voltage | 2.7 V to 3.6 V - compatible with 3.3 V logic systems; 4 mA active, 1 µA power-down (typ.) |
| Operating Temperature | −40°C to +85°C - qualified for industrial applications per datasheet specifications |
Pinout & Package
W25Q64CVSSIG is packaged in an 8-pin SOIC 208-mil (package code SS), with lead-free, RoHS-compliant construction and surface-mount footprint.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 /CS | Chip Select Input | Active-low enable; places DO/IO pins in high-impedance state when high; required low-to-high transition before instruction acceptance after power-up |
| 2 DO (IO1) | Data Output / Bidirectional I/O | Unidirectional output in Standard SPI; bidirectional IO1 in Dual/Quad SPI; used for read data and status on falling CLK edge |
| 3 /WP (IO2) | Write Protect Input / Bidirectional I/O | Hardware write lock for status register when QE = 0; becomes IO2 in Quad SPI mode (QE = 1) |
| 4 GND | Ground Reference | Primary signal and power return path; must be low-impedance for stable SPI timing and noise immunity |
| 5 DI (IO0) | Data Input / Bidirectional I/O | Unidirectional input in Standard SPI; bidirectional IO0 in Dual/Quad SPI; accepts instructions, addresses, and data on rising CLK edge |
| 6 CLK | Serial Clock Input | Master-generated timing reference; supports Mode 0 (CLK idle low) and Mode 3 (CLK idle high); determines maximum interface speed |
| 7 /HOLD (IO3) | Hold Input / Bidirectional I/O | Pauses ongoing SPI transaction while /CS is low; becomes IO3 in Quad SPI mode (QE = 1); active-low, requires CLK synchronization |
| 8 VCC | Power Supply | Single 2.7–3.6 V supply; powers internal charge pumps for erase/program; decoupling capacitor required per datasheet layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| Continuous Read Mode | Enables true XIP with ≤8-clock instruction overhead per 24-bit address; eliminates repeated command reissuance for sequential access |
| Quad SPI Enable (QE) | Non-volatile bit in Status Register-2; must be set to repurpose /WP and /HOLD as IO2/IO3 - required for 320 MHz equivalent throughput |
| Erase/Program Suspend | Allows interruption of long erase/program cycles (e.g., 64KB block erase) via 75h/7Ah commands - critical for real-time system responsiveness |
| Security Registers | Three 256-byte OTP-locked registers (SR1–SR3) for secure key storage, calibration data, or device-specific credentials - protected by LB1–LB3 bits |
| SFDP Compliance | JESD216 v1.5-compliant Serial Flash Discoverable Parameters register - enables automatic driver configuration without hard-coded timing parameters |
| Unique 64-bit ID | Factory-programmed, globally unique serial number readable via 4Bh instruction - supports device authentication and traceability in production |
Applications
| Industrial PLC Firmware Storage | Automotive Infotainment Boot Code |
|---|---|
|
Use Scenario: Storing boot firmware and field-upgradable application code in programmable logic controllers with limited PCB area and no parallel bus. IC Role / Device Role / Timing Role: Primary non-volatile code storage device interfaced via Quad SPI to ARM Cortex-M7 MCU; provides XIP-capable boot image with <100 µs latency per 32-byte fetch. Use Value: 4KB sector erase enables atomic firmware updates without disrupting operational runtime code; 100K-cycle endurance ensures >10 years of field upgrades. |
Use Scenario: Hosting boot loader and safety-critical OS kernel in automotive head units requiring AEC-Q200-aligned components and secure boot verification. IC Role / Device Role / Timing Role: Secure boot source for SoC; delivers authenticated code via Quad SPI with SFDP-driven timing adaptation and 64-bit UID-based signature binding. Use Value: OTP-locked security registers store root keys; JEDEC ID and unique serial number support cryptographic chain-of-trust validation during boot sequence. |
| IoT Edge Sensor Configuration | Medical Device Calibration Data |
|
Use Scenario: Retaining sensor calibration coefficients, network credentials, and device-specific settings across power cycles in battery-powered wireless nodes. IC Role / Device Role / Timing Role: Parameter storage peripheral connected to ESP32 via Dual SPI; accessed only during initialization or OTA update - minimal active time reduces average current draw. Use Value: 1 µA power-down current extends 10-year battery life; hardware /WP pin prevents accidental overwrite during brown-out conditions. |
Use Scenario: Storing factory-calibrated ADC offset/gain values and regulatory compliance logs in portable diagnostic equipment with strict data integrity requirements. IC Role / Device Role / Timing Role: Tamper-resistant configuration memory; accessed via Standard SPI during self-test; write-protected via BP bits and /WP pin during normal operation. Use Value: Block protect bits (BP2–BP0) lock 4KB sectors containing calibration data; 20-year data retention meets IEC 62304 software lifecycle mandates. |
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 |
|---|---|---|---|
| MX25L6405DZNI-12G | 64 M-bit, 104 MHz max clock, SOIC-208-mil, but lacks Quad SPI support and SFDP register | Requires fixed-timing drivers; unsuitable for XIP or auto-configurable systems needing JEDEC SFDP | Select only if legacy SPI-only interface and lower cost outweigh missing Quad I/O and configurability |
| S25FL164K0XMFI010 | 64 M-bit, 80 MHz, SOIC-208-mil, supports Quad SPI and SFDP, but rated −40°C to +105°C and uses different security register model | Better thermal margin for under-hood automotive use; security model incompatible with Winbond's LB-bit locking scheme | Prefer for extended temperature designs where security register interoperability is not required |
Compared with MX25L6405DZNI-12G and S25FL164K0XMFI010, W25Q64CVSSIG uniquely balances Quad SPI performance, SFDP-driven flexibility, and industrial-grade endurance in the SOIC-208 package - making it optimal for new designs requiring XIP, secure boot, and field-upgrade resilience.
Availability
W25Q64CVSSIG is available at Aetrix Electronics and suitable for industrial PLC firmware storage, automotive infotainment boot code, and IoT edge sensor configuration requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant sourcing.
Supply support for W25Q64CVSSIG 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 high-performance embedded systems requiring reliable, low-power, SPI-compatible non-volatile storage with advanced features like Quad I/O, XIP, and security registers - optimized for code execution and firmware update resilience.
FAQ
What is the package type and lead count for W25Q64CVSSIG?
W25Q64CVSSIG uses an 8-pin SOIC 208-mil (0.208 inch wide) surface-mount package with gull-wing leads, designated by package code "SS". It is RoHS-compliant, lead-free, and compatible with standard reflow soldering profiles per JEDEC J-STD-020.
Does W25Q64CVSSIG support Quad SPI mode out of the box?
No - W25Q64CVSSIG requires the Quad Enable (QE) bit in Status Register-2 to be set (via Write Status Register instruction 01h) to activate Quad SPI functionality. Until QE=1, /WP and /HOLD remain dedicated hardware control pins, not IO2/IO3.
How many program/erase cycles does W25Q64CVSSIG guarantee?
W25Q64CVSSIG guarantees more than 100,000 program/erase cycles per sector under industrial temperature conditions (−40°C to +85°C), with 20-year data retention at +85°C - verified per datasheet Revision C, Section 2.
Can W25Q64CVSSIG be used for execute-in-place (XIP) applications?
Yes - W25Q64CVSSIG supports true XIP via Continuous Read Mode, which minimizes instruction overhead to as few as 8 clocks per 24-bit address fetch. When paired with a Quad SPI host controller, it delivers up to 320 MB/s effective throughput for seamless code execution.
What security features does W25Q64CVSSIG provide beyond basic write protection?
W25Q64CVSSIG includes three 256-byte one-time-programmable (OTP) security registers with LB1–LB3 locks, a 64-bit unique serial ID, JEDEC-standard manufacturer/device identification, and SFDP register for standardized parameter discovery - enabling layered authentication and secure boot workflows.
W25Q64CVSSIG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Winbond Electronics Corporation
- Series:
- SpiFlash®
- Package/Case:
- 8-SOIC (0.209", 5.30mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- FLASH
- Technology:
- FLASH - NOR
- Memory Size:
- 64Mbit
- Memory Organization:
- 8M x 8
- Memory Interface:
- SPI - Quad I/O
- Clock Frequency:
- 80 MHz
- Write Cycle Time - Word, Page:
- 50µs, 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
W25Q64CVSSIG FAQ
1.How can I place an order for W25Q64CVSSIG through Aetrix?
Please submit a Request for Quotation (RFQ) for W25Q64CVSSIG 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 W25Q64CVSSIG reliable?
The price and inventory of W25Q64CVSSIG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for W25Q64CVSSIG is usually 5 days.
3.What payment methods are accepted for W25Q64CVSSIG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for W25Q64CVSSIG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for W25Q64CVSSIG?
W25Q64CVSSIG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your W25Q64CVSSIG 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 W25Q64CVSSIG?
For technical support, including W25Q64CVSSIG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your W25Q64CVSSIG requirements.
6.How does Aetrix verify that W25Q64CVSSIG is sourced from the original manufacturer or authorized distributors?
All W25Q64CVSSIG 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 W25Q64CVSSIG meets industry standards.
7.What is the process for return or replacement of W25Q64CVSSIG?
All W25Q64CVSSIG units undergo pre-shipment inspection (PSI). If there is an issue with W25Q64CVSSIG, 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 W25Q64CVSSIG part is unused and in its original packaging.
Return procedure for W25Q64CVSSIG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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