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Winbond Electronics Corporation W25X16AVDAIZ
- Part No.:
- W25X16AVDAIZ
- Manufacturer:
- Winbond Electronics Corporation
- Category:
- Memory
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
W25X16AVDAIZ.pdf
- Description:
- IC FLASH 16MBIT SPI 75MHZ 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:1,363
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Product details
Overview
W25X16AVDAIZ from Winbond is a 16 M-bit (2 MB) serial Flash memory IC with SPI and dual-output SPI interface, organized into 8,192 × 256-byte pages and 512 uniform 4 KB sectors. It operates from 2.7V to 3.6V, supports up to 75 MHz clock frequency (150 Mbps dual-output read), and delivers 100,000 program/erase cycles with 20-year data retention. It is used in embedded boot code storage, firmware update storage, and parameter logging in space-constrained industrial controllers.
For engineers reviewing the W25X16AVDAIZ datasheet, W25X16AVDAIZ pinout, W25X16AVDAIZ application, or W25X16AVDAIZ equivalent, key selection criteria include its 8-pin PDIP 300-mil package (DA), hardware/software write protection via /WP and status register, sector-level erase granularity, and Fast Read Dual Output (3Bh) instruction for high-speed code shadowing.
Technical Context
The W25X16AVDAIZ implements a standard SPI bus (Modes 0 and 3) with dedicated DO and bidirectional DIO pins, enabling both single- and dual-output read modes. Its internal architecture includes a 256-byte page buffer, status register with BP2–BP0, TB, and SRP bits for flexible memory protection, and hardware support for /HOLD and /WP control signals.
It executes discrete instructions-including Page Program (02h), Sector Erase (20h), Fast Read Dual Output (3Bh), and Write Status Register (01h)-with deterministic timing (e.g., tPP ≤ 3 ms, tSE ≤ 300 ms). All erase operations are internally timed and self-terminating, with BUSY bit (S0) indicating active execution.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 16 M-bit (2,097,152 bytes), organized as 8,192 pages × 256 bytes |
| Architecture | Uniform 4 KB sectors (512 total); no partial-sector programming - full-page (≤256 B) writes only |
| Max Clock Frequency | 75 MHz SPI clock; enables 150 Mbps effective throughput using Fast Read Dual Output (3Bh) |
| Write Endurance | Minimum 100,000 program/erase cycles per sector - critical for firmware update partitions |
| Data Retention | 20 years at +25°C - validated under JEDEC JESD22-A117, supports long-life industrial deployments |
| Supply Voltage | 2.7 V to 3.6 V - compatible with 3.3 V logic systems; no 2.5 V or 1.8 V operation |
| Operating Temp | −40°C to +85°C - qualified per AEC-Q100 Class 3 for extended-temperature industrial use |
Pinout & Package
W25X16AVDAIZ uses an 8-pin PDIP 300-mil package (package code DA), with lead spacing of 0.300 inches and through-hole mounting. Pin 1 is marked with a notch or dot; pin numbering follows standard counter-clockwise layout starting from top-left corner when viewed from top with notch left.
| 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 instruction acceptance after power-up |
| 2 DO | Serial Data Output | Unidirectional output: delivers data/status on falling CLK edge; high-Z during /HOLD or /CS high |
| 3 /WP | Hardware Write Protect Input | Active-low control: locks status register writes when SRP = 1 and /WP = low - prevents accidental configuration changes |
| 4 GND | Ground Reference | Primary return path for VCC and all I/O; must be low-impedance connection to avoid timing skew or noise-induced errors |
| 5 DIO | Serial Data I/O | Bidirectional: inputs instructions/addresses on rising CLK edge; outputs data during Fast Read Dual Output (3Bh) |
| 6 CLK | Serial Clock Input | Master-generated timing signal: defines sampling (rising edge) and output (falling edge) edges; supports Modes 0 and 3 |
| 7 /HOLD | Operation Pause Control | Active-low suspend: freezes ongoing SPI transaction without resetting internal state - essential for multi-device bus sharing |
| 8 VCC | Power Supply | 2.7–3.6 V supply: requires local 0.1 µF ceramic decoupling; device resets if VCC drops below VWI (~2.3 V) |
Key Features
| Feature | Design Value |
|---|---|
| Dual Output SPI Interface | Enables 150 Mbps read throughput via Fast Read Dual Output (3Bh), matching parallel Flash performance while using only 4 pins |
| Flexible Memory Protection | Combines hardware (/WP pin) and software (SRP, BP2–BP0, TB bits) to protect any 4 KB sector, 64 KB block, or full array - configurable per application partition |
| 4 KB Uniform Sector Architecture | Allows precise firmware update partitioning (e.g., separate boot loader, app image, config storage) without wasted erase overhead |
| Low-Power Operation | 5 mA active current and 1 µA power-down current enable battery-backed or energy-harvesting designs with infrequent access |
| HOLD Function with State Preservation | Pauses active transactions (e.g., mid-program) without losing page buffer contents - resumes seamlessly after /HOLD deassertion |
Applications
| Industrial PLC Firmware Storage | Medical Device Boot Code |
|---|---|
|
Use Scenario: Stores boot firmware and safety-critical application code in programmable logic controllers with field-upgrade capability. IC Role / Device Role / Timing Role: Non-volatile boot memory mapped via SPI; provides deterministic 75 MHz read access for fast cold-start execution. Use Value: 4 KB sector granularity enables atomic firmware updates without erasing operational runtime parameters stored in adjacent sectors. |
Use Scenario: Holds certified boot loader and diagnostic firmware in portable ultrasound and infusion pumps requiring regulatory traceability. IC Role / Device Role / Timing Role: Secure, write-protected code storage with hardware /WP and SRP-enabled lock - prevents unauthorized modification during service. Use Value: 20-year data retention and −40°C to +85°C operation ensure firmware integrity across product lifetime and environmental stress testing. |
| Automotive Telematics Module | Smart Energy Meter Parameter Log |
|
Use Scenario: Stores OTA update images and vehicle-specific configuration tables in cellular-connected telematics control units (TCUs). IC Role / Device Role / Timing Role: High-reliability SPI Flash supporting dual-output reads for rapid code shadowing into RAM during boot. Use Value: 100,000 erase/write cycles accommodate frequent firmware patches over 10+ year vehicle service life. |
Use Scenario: Logs time-stamped metering data, tariff schedules, and calibration constants in ANSI C12.22-compliant smart meters. IC Role / Device Role / Timing Role: Parameter storage with independent 4 KB sector erase - preserves historical logs while updating current tariff tables. Use Value: Hardware write protection (/WP pin) prevents corruption during brown-out events common in grid-edge deployments. |
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 | Same density (16 M-bit), but newer generation: Quad SPI support, 104 MHz clock, 3.3 V only, SOIC 208-mil (SS) package | Requires Quad SPI controller; not drop-in for legacy dual-output-only designs | Select if migrating to faster Quad I/O and higher endurance (100K vs. same), but verify SPI mode compatibility and PCB footprint |
| AT25DF161-SSH-T | 16 M-bit SPI Flash, 75 MHz max, 2.7–3.6 V, SOIC 208-mil; lacks /HOLD pin and dual-output mode | No hardware suspend capability; single-output only limits read bandwidth to 75 Mbps | Choose for cost-sensitive, non-time-critical applications where /HOLD and dual-output are unused - verify pinout mismatch (no /HOLD) |
Compared with W25X16AVDAIZ, W25Q16JVSSIQ offers higher bandwidth and modern features but requires controller and layout changes, while AT25DF161-SSH-T sacrifices /HOLD and dual-output for lower cost and simpler interface - neither is pin-compatible with the PDIP-8 DA package of W25X16AVDAIZ.
Availability
W25X16AVDAIZ is available at Aetrix Electronics and suitable for industrial PLC firmware storage, medical device boot code, automotive telematics modules, and smart energy meter parameter logging requiring stable component supply and long-term lifecycle support.
Supply support for W25X16AVDAIZ 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 DRAM, Flash memory, and mobile DRAM solutions for industrial, communications, and consumer markets.
The W25X series was designed as a high-performance, low-power serial Flash family targeting code storage and data logging in resource-constrained embedded systems - emphasizing sector flexibility, dual-output speed, and robust write protection.
FAQ
What is the package type and pin count of W25X16AVDAIZ?
W25X16AVDAIZ uses an 8-pin PDIP 300-mil package (package code DA), with standard through-hole mounting and 0.300-inch lead spacing. Pin 1 is identified by a notch or dot at the top-left corner. This package is distinct from SOIC or WSON variants and is not pin-compatible with 16-pin SOIC (SF) or 8-pin SOIC (SN/SS) versions of the W25X16A family.
Does W25X16AVDAIZ support Quad SPI or only standard/dual-output SPI?
W25X16AVDAIZ supports only standard SPI (single-output) and dual-output SPI modes - it does not implement Quad SPI (QSPI) or quad I/O instructions. Dual-output operation is enabled exclusively via the Fast Read Dual Output (3Bh) instruction, using DO and DIO as simultaneous outputs. QSPI functionality is introduced in later Winbond families such as W25Q.
What is the maximum clock frequency supported by W25X16AVDAIZ, and how does it affect read speed?
W25X16AVDAIZ supports up to 75 MHz SPI clock frequency. In standard SPI mode, this yields 75 Mbps read throughput. When using the Fast Read Dual Output (3Bh) instruction, both DO and DIO output data simultaneously on each clock edge, achieving 150 Mbps effective read speed - doubling bandwidth without increasing clock rate or pin count.
How does hardware write protection work on W25X16AVDAIZ?
Hardware write protection on W25X16AVDAIZ is implemented via the /WP pin in conjunction with the Status Register Protect (SRP) bit. When SRP = 1 and /WP is driven low, the Write Status Register instruction (01h) is blocked - preventing changes to BP2–BP0, TB, and SRP itself. This ensures critical memory regions remain locked even if firmware erroneously attempts reconfiguration.
Can W25X16AVDAIZ be used in place of W25X16A in a design using SOIC-150 package?
No - W25X16AVDAIZ uses an 8-pin PDIP 300-mil (DA) package, while W25X16A in SOIC-150-mil uses package code SN. They differ in physical dimensions, lead pitch, mounting method (through-hole vs. surface-mount), and thermal characteristics. Substitution would require PCB redesign and is not electrically or mechanically interchangeable.
W25X16AVDAIZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Winbond Electronics Corporation
- Series:
- SpiFlash®
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- 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:
- Through Hole
- Supplier Device Package:
- 8-PDIP
W25X16AVDAIZ FAQ
1.How can I place an order for W25X16AVDAIZ through Aetrix?
Please submit a Request for Quotation (RFQ) for W25X16AVDAIZ 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 W25X16AVDAIZ reliable?
The price and inventory of W25X16AVDAIZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for W25X16AVDAIZ is usually 5 days.
3.What payment methods are accepted for W25X16AVDAIZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for W25X16AVDAIZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for W25X16AVDAIZ?
W25X16AVDAIZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your W25X16AVDAIZ 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 W25X16AVDAIZ?
For technical support, including W25X16AVDAIZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your W25X16AVDAIZ requirements.
6.How does Aetrix verify that W25X16AVDAIZ is sourced from the original manufacturer or authorized distributors?
All W25X16AVDAIZ 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 W25X16AVDAIZ meets industry standards.
7.What is the process for return or replacement of W25X16AVDAIZ?
All W25X16AVDAIZ units undergo pre-shipment inspection (PSI). If there is an issue with W25X16AVDAIZ, 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 W25X16AVDAIZ part is unused and in its original packaging.
Return procedure for W25X16AVDAIZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
W25X16AVDAIZ Tags
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M24C02-WMN6TP
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AT24C02C-XHM-T
Microchip Technology
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AT21CS01-STUM10-T
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24LC01BT-I/OT
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M24C02-FMC6TG
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AT24CS02-SSHM-T
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93LC46BT-I/OT
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AT24C04C-SSHM-T
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24LC01BT-I/SN
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24AA02UIDT-I/OT
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AT24C08C-STUM-T
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