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Winbond Electronics Corporation W25X16AVSSIG
- Part No.:
- W25X16AVSSIG
- Manufacturer:
- Winbond Electronics Corporation
- Category:
- Memory
- Package:
- 8-SOIC (0.209", 5.30mm Width)
- Datasheet:
-
W25X16AVSSIG.pdf
- Description:
- IC FLASH 16MBIT SPI 75MHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,664
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Product details
Overview
W25X16AVSSIG from Winbond is a 16 M-bit (2 MB) serial Flash memory IC with uniform 4 KB sectors and dual-output SPI interface, operating from 2.7V to 3.6V, supporting up to 75 MHz clock frequency and 150 Mbps data transfer via Fast Read Dual Output (3Bh), used for code storage and parameter retention in space-constrained embedded systems.
For engineers reviewing the W25X16AVSSIG datasheet, W25X16AVSSIG pinout, W25X16AVSSIG application, or W25X16AVSSIG equivalent, key selection criteria include sector-erase granularity (4 KB), hardware write protection via /WP pin, JEDEC ID support (9Fh), and compatibility with SPI Modes 0 and 3 in industrial temperature range (–40°C to +85°C).
Technical Context
The W25X16AVSSIG implements a standard SPI-compatible 4-wire interface (CLK, /CS, DIO, DO) with optional /HOLD and /WP control signals, enabling pause-on-demand operation and hardware-based memory protection. It supports both single-output and dual-output read modes, where the DIO pin functions as a second data output during Fast Read Dual Output (3Bh) execution.
Internally, the device organizes its 2,097,152-byte array into 512 uniform 4 KB sectors and 32 erasable 64 KB blocks, with page-program capability (256 bytes/page, <2 ms). Its status register includes BUSY, WEL, BP2–BP0, TB, and SRP bits for granular software/hardware write protection and power-down management.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 16 M-bit (2,097,152 bytes), organized as 8,192 pages × 256 bytes |
| Sector Size | 4 KB (512 sectors), enabling fine-grained data/parameter updates without bulk erase |
| Max Clock Frequency | 75 MHz - enables 150 Mbps effective throughput using Fast Read Dual Output (3Bh) |
| Supply Voltage | 2.7 V to 3.6 V - compatible with standard 3.3 V logic systems and low-power designs |
| Operating Temperature | –40°C to +85°C - qualified for industrial-grade embedded applications |
| Erase/Write Endurance | 100,000 cycles - ensures long-term reliability in firmware update or logging use cases |
| Data Retention | 20 years - maintains stored configuration or calibration data over product lifetime |
Pinout & Package
W25X16AVSSIG is packaged in an 8-pin SOIC 208-mil (package code SS), with lead-free, RoHS-compliant construction and surface-mount compatibility.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 /CS | Chip Select Input | Active-low enable signal; places device in active mode when low, high-impedance DO when high |
| 2 DO | Serial Data Output | Primary output for standard SPI reads; outputs data on falling CLK edge |
| 3 /WP | Write Protect Input | Hardware lock for status register writes when low (with SRP=1); prevents accidental configuration changes |
| 4 GND | Ground Reference | System ground return path for all internal circuitry and I/O signaling |
| 5 DIO | Serial Data I/O | Bi-directional SPI data line; input for commands/addresses, dual-output during Fast Read (3Bh) |
| 6 CLK | Serial Clock Input | Timing reference for all SPI transfers; data sampled on rising edge, output shifted on falling edge |
| 7 /HOLD | Hold Input | Pauses ongoing SPI transaction while /CS remains low; useful for multi-device bus arbitration |
| 8 VCC | Power Supply | Single 2.7–3.6 V supply; powers core logic, memory array, and I/O buffers |
Key Features
| Feature | Design Value |
|---|---|
| Dual Output SPI (3Bh) | Enables 150 Mbps read throughput by using DIO as second output, accelerating boot-time code shadowing |
| Uniform 4 KB Sectors | Allows selective erase of configuration or log data without disturbing adjacent firmware or application code |
| Hardware + Software Write Protection | Combines /WP pin control with programmable BP2–BP0 and SRP bits to lock specific memory regions permanently |
| JEDEC Standard IDs | Supports 9Fh (JEDEC ID) and 90h (Manufacturer/Device ID) for automated system identification and firmware validation |
| Low-Power Operation | 5 mA active current and 1 µA power-down current reduce system-level power budget in battery-backed or energy-sensitive designs |
Applications
| Industrial HMI Firmware Storage | IoT Edge Device Configuration |
|---|---|
|
Use Scenario: Storing GUI assets, boot firmware, and localized language packs in panel-mounted HMIs with limited PCB area. IC Role / Device Role / Timing Role: Non-volatile code and resource storage with fast dual-output read for rapid UI initialization. Use Value: 4 KB sector erase allows incremental firmware patching without full reflash; 75 MHz SPI supports sub-100 ms boot time. |
Use Scenario: Holding sensor calibration tables, network credentials, and OTA update staging buffers in battery-powered environmental monitors. IC Role / Device Role / Timing Role: Parameter and state retention memory with hardware write protection against corruption during brown-out events. Use Value: /WP pin + SRP bit prevents accidental overwrite of Wi-Fi keys; 1 µA power-down current extends battery life beyond 5 years. |
| Medical Diagnostic Boot Loader | Automotive Body Control Module |
|
Use Scenario: Hosting secure boot loader and diagnostic firmware images in portable ultrasound or ECG devices requiring IEC 62304 compliance. IC Role / Device Role / Timing Role: Trusted code storage with verified JEDEC ID (9Fh) and dual-read capability for deterministic load timing. Use Value: 100,000 erase cycles support field-upgradeable diagnostics; –40°C to +85°C rating ensures operation across clinical environments. |
Use Scenario: Storing lighting profiles, window position maps, and CAN message routing tables in door modules and seat controllers. IC Role / Device Role / Timing Role: Persistent configuration memory with top/bottom block protection (TB bit) to safeguard factory-set parameters. Use Value: BP2–BP0 + TB bits isolate user-modifiable zones (e.g., mirror presets) from immutable OEM calibration data. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial Flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| W25Q16JVSSIQ | Quad SPI (QPI) and DTR support; higher 104 MHz clock; 4 KB sectors retained; 3.3 V only | Enables faster random reads and XIP-capable boot in newer MCU platforms with QSPI peripherals | Select when migrating to QSPI-enabled SoCs and requiring >150 Mbps throughput or execute-in-place capability |
| AT25SF161-SSHD-B | Same density and 4 KB sectors; supports 104 MHz clock; includes security register and OTP lock bits | Provides hardware-based secure boot key storage and one-time-programmable lockdown for anti-cloning | Choose for designs requiring cryptographic key isolation or tamper-resistant firmware signing verification |
Compared with W25X16AVSSIG, W25Q16JVSSIQ delivers higher bandwidth via Quad SPI but requires peripheral and driver updates, while AT25SF161-SSHD-B adds security features at the cost of slightly higher unit price and no /HOLD pin - making W25X16AVSSIG optimal for cost-sensitive, SPI-only industrial control applications.
Availability
W25X16AVSSIG is available at Aetrix Electronics and suitable for industrial HMI firmware storage, IoT edge device configuration, and medical diagnostic boot loader applications requiring stable component supply, long-lifecycle support, and RoHS-compliant sourcing.
Supply support for W25X16AVSSIG 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 NOR Flash, RAM, and mobile DRAM, serving automotive, industrial, and consumer markets since 1987.
The W25X series was designed as a high-performance, low-voltage serial Flash family targeting space- and power-constrained embedded systems needing reliable code and data storage with flexible erase granularity.
FAQ
What is the package type and footprint of W25X16AVSSIG?
W25X16AVSSIG uses an 8-pin SOIC 208-mil package (package code SS), with 1.27 mm pitch, 5.33 mm × 5.33 mm body size, and gull-wing leads. This footprint is compatible with standard SOIC-8 reflow profiles and supports hand-soldering or automated assembly in industrial PCB layouts.
Does W25X16AVSSIG support SPI Mode 0 and Mode 3?
Yes, W25X16AVSSIG fully supports both SPI Mode 0 (CPOL=0, CPHA=0) and Mode 3 (CPOL=1, CPHA=1). Data is latched on the rising edge of CLK in both modes, and output is driven on the falling edge - ensuring interoperability with diverse microcontroller SPI peripherals without protocol translation.
How does hardware write protection work on W25X16AVSSIG?
W25X16AVSSIG implements hardware write protection using the /WP pin in conjunction with the Status Register Protect (SRP) bit. When SRP=1 and /WP is pulled low, the Write Status Register instruction is blocked - preventing modification of BP2–BP0 and TB bits that define protected memory regions.
What is the maximum data transfer rate achievable with W25X16AVSSIG?
W25X16AVSSIG achieves up to 150 Mbps effective data rate using the Fast Read Dual Output (3Bh) instruction at 75 MHz clock frequency. In standard single-output mode (03h or 0Bh), the maximum is 75 Mbps. The dual-output mode doubles throughput by using both DO and DIO pins simultaneously during read operations.
Can W25X16AVSSIG be used in place of W25X16VSSIG?
Yes, W25X16AVSSIG is the enhanced revision of W25X16VSSIG, with identical pinout, timing, and command set. The "A" suffix denotes improved electrical characteristics, including tighter AC parameter tolerances and enhanced ESD robustness, while maintaining full backward compatibility in existing designs.
W25X16AVSSIG 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:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- FLASH
- Technology:
- FLASH
- Memory Size:
- 16Mbit
- Memory Organization:
- 2M 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
W25X16AVSSIG FAQ
1.How can I place an order for W25X16AVSSIG through Aetrix?
Please submit a Request for Quotation (RFQ) for W25X16AVSSIG 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 W25X16AVSSIG reliable?
The price and inventory of W25X16AVSSIG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for W25X16AVSSIG is usually 5 days.
3.What payment methods are accepted for W25X16AVSSIG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for W25X16AVSSIG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for W25X16AVSSIG?
W25X16AVSSIG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your W25X16AVSSIG 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 W25X16AVSSIG?
For technical support, including W25X16AVSSIG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your W25X16AVSSIG requirements.
6.How does Aetrix verify that W25X16AVSSIG is sourced from the original manufacturer or authorized distributors?
All W25X16AVSSIG 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 W25X16AVSSIG meets industry standards.
7.What is the process for return or replacement of W25X16AVSSIG?
All W25X16AVSSIG units undergo pre-shipment inspection (PSI). If there is an issue with W25X16AVSSIG, 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 W25X16AVSSIG part is unused and in its original packaging.
Return procedure for W25X16AVSSIG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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