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Winbond Electronics Corporation W25Q512NWEIQ TR
- Part No.:
- W25Q512NWEIQ TR
- Manufacturer:
- Winbond Electronics Corporation
- Category:
- Memory
- Package:
- 8-WDFN Exposed Pad
- Datasheet:
-
W25Q512NWEIQ TR.pdf
- Description:
- IC FLASH 512MBIT SPI/QUAD 8WSON
- Quantity:
- Payment:
- Shipping:
Inventory:4,796
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Product details
Overview
W25Q512NWEIQ TR from Winbond is a 1.8V, 512M-bit (64MB) serial NOR flash memory with Dual/Quad SPI interface, organized into 262,144 × 256-byte pages and supporting 4KB/32KB/64KB erase granularity. It delivers up to 133MHz clock rate, 532MHz equivalent Quad I/O throughput, and 100K program-erase cycles for embedded code storage and XIP execution in space-constrained industrial controllers.
For engineers reviewing the W25Q512NWEIQ TR datasheet, W25Q512NWEIQ TR pinout, W25Q512NWEIQ TR application, or W25Q512NWEIQ TR equivalent, key selection criteria include 1.65–1.95V supply compatibility, hardware /RESET availability in TFBGA/WLCSP/SOIC-16 variants, Quad Enable (QE) bit configuration, 4-byte addressing support, and sector-level write protection via BP bits and /WP pin.
Technical Context
The W25Q512NWEIQ TR implements a standard SPI bus with Mode 0 and Mode 3 support, enabling instruction, address, and data transfer on CLK edges. Its command set includes dedicated instructions for 4-byte address mode entry/exit (B7h/E9h), Fast Read Quad I/O (6Bh/6Ch), and security register programming (42h/44h).
Internally, it integrates three 256-byte Security Registers with OTP locks, SFDP register for discoverable parameters, and status registers with volatile/non-volatile BP, TB, CMP, SRP, and QE bits. Erase/program suspend/resume functionality enables concurrent background operations without halting host communication.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 512 M-bit (64 MB), organized as 262,144 × 256-byte pages |
| Supply Voltage | 1.65 V to 1.95 V - enables direct integration with 1.8V logic domains without level shifting |
| Max Clock Frequency | 133 MHz - supports 66 MB/s continuous read throughput in Quad I/O mode |
| Erase Granularity | 4 KB sectors (16,384 total), 32 KB blocks (2,048), 64 KB blocks (1,028) - enables fine-grained firmware partitioning |
| Endurance & Retention | 100,000 program-erase cycles; >20 years data retention at +85°C - suitable for field-updatable systems |
| Operating Temp | −40°C to +85°C - qualified for industrial temperature operation without derating |
| Security Features | 64-bit unique ID, SFDP register, three 256-byte OTP-lockable Security Registers - supports secure boot and device authentication |
Pinout & Package
W25Q512NWEIQ TR is packaged in an 8-pad WSON 8×6 mm (Package Code E), with no dedicated /RESET pin - /HOLD (IO3) shares Pin 7 and functions as hold input only (not reset) in this variant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| /CS | Chip Select Input | Active-low enable; high-impedance DO during deselect; required high-to-low transition before new instruction acceptance |
| DO (IO1) | Data Output / I/O1 | Unidirectional output in Standard SPI; bidirectional I/O in Dual/Quad modes; used for status/data reads on CLK falling edge |
| /WP (IO2) | Write Protect Input / I/O2 | Active-low hardware lock for Status Register; repurposed as IO2 when Quad Enable (QE=1) is set |
| GND | Ground Reference | Primary return path for all I/O and core logic; must be low-impedance for stable timing and noise immunity |
| DI (IO0) | Data Input / I/O0 | Unidirectional input in Standard SPI; bidirectional I/O in Dual/Quad modes; accepts instructions/addresses/data on CLK rising edge |
| CLK | Serial Clock Input | Synchronous timing reference for all SPI transfers; supports Mode 0 (CPOL=0, CPHA=0) and Mode 3 (CPOL=1, CPHA=1) |
| /HOLD (IO3) | Hold Input / I/O3 | Active-low pause signal; places DO in high-Z and ignores DI/CLK while /CS active; disabled when QE=1 (used as IO3) |
| VCC | Power Supply | 1.65–1.95 V core supply; decoupling capacitor required per datasheet layout guidelines to suppress switching noise |
Key Features
| Feature | Design Value |
|---|---|
| Quad SPI Interface | Enables 532 MHz equivalent bandwidth using IO0–IO3; requires non-volatile QE bit setting in Status Register-2 |
| Execute-in-Place (XIP) | Supports direct code execution from flash via Dual/Quad SPI, eliminating need for RAM shadowing in resource-limited MCUs |
| Erase/Program Suspend | Allows host to pause ongoing erase/program operations (75h) and resume (7Ah) - critical for real-time interrupt handling |
| Hardware Write Protection | /WP pin + BP/TB/CMP bits provide layered protection: sector-, block-, top/bottom-array, and complement-array locking |
| Security Register Set | Three 256-byte OTP-lockable registers store cryptographic keys or calibration data immune to accidental overwrite or field reprogramming |
Applications
| Industrial PLC Firmware Storage | Automotive ADAS Boot Memory |
|---|---|
Use Scenario: Storing firmware images and configuration tables in programmable logic controllers deployed in factory automation environments. IC Role / Device Role / Timing Role: Non-volatile code storage with XIP capability and hardware write protection to prevent corruption during brown-out or EMI events. Use Value: 4KB sector erase enables incremental firmware updates without full chip erase; 100K endurance ensures >10 years of field upgrades at monthly intervals. | Use Scenario: Holding boot code and safety-critical initialization routines for radar and camera ECUs in ISO 26262-compliant automotive systems. IC Role / Device Role / Timing Role: Secure, fast-read boot memory with 66 MB/s Quad I/O throughput and 64-bit unique ID for anti-cloning verification. Use Value: SFDP register allows automatic configuration by host bootloader; OTP-locked Security Registers store ASIL-B integrity keys. |
| Medical IoT Sensor Node | Edge AI Gateway Configuration |
Use Scenario: Storing calibrated sensor coefficients, patient history logs, and regulatory compliance metadata in portable diagnostic devices. IC Role / Device Role / Timing Role: Parameter and data log storage with individual sector lock (36h/39h) to protect HIPAA-sensitive fields from overwrite. Use Value: 20-year data retention at +85°C ensures long-term reliability in battery-powered devices with infrequent maintenance cycles. | Use Scenario: Hosting FPGA bitstreams, neural network weights, and runtime configuration profiles in industrial edge gateways with limited PCB area. IC Role / Device Role / Timing Role: High-density, low-pin-count storage interfaced via Quad SPI to reduce MCU GPIO usage and PCB routing complexity. Use Value: 8×6 mm WSON package saves >60% board space vs. SOIC-16; 133 MHz clock supports real-time model loading without external DRAM. |
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 |
|---|---|---|---|
| MX25L51245GMI-13G | 3.3V supply (2.7–3.6V); same 512M-bit density, 133MHz max clock, but lacks /RESET pin in 8-pin SOIC variant | Requires level-shifting for 1.8V systems; no hardware reset in compact packages; lower power-down current (1µA vs. 0.3µA) | Select only if system uses 3.3V I/O and does not require sub-1µA deep sleep or hardware reset functionality. |
| S25FL512SAGMFI010 | 1.8V supply; includes integrated ECC and configurable latency code; supports octal DTR mode (not supported by W25Q512NWEIQ TR) | Better error resilience for long-life deployments; higher pin count (16-pin SOIC or 24-ball BGA) required for full feature set | Choose when bit-error correction is mandatory and PCB layout accommodates larger footprint or additional pins. |
Compared with MX25L51245GMI-13G and S25FL512SAGMFI010, the W25Q512NWEIQ TR provides optimal balance of 1.8V operation, ultra-low 0.3µA power-down, compact WSON packaging, and Quad SPI performance - making it ideal for battery-powered and space-constrained industrial designs where voltage compatibility and standby efficiency are primary constraints.
Availability
W25Q512NWEIQ TR is available at Aetrix Electronics and suitable for industrial PLC firmware storage, automotive ADAS boot memory, and medical IoT sensor node applications requiring stable component supply across multi-year production cycles.
Supply support for W25Q512NWEIQ TR 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 memory solutions including NOR/NAND flash, RAM, and mobile DRAM.
The W25Q series targets high-performance, low-voltage embedded systems requiring reliable code storage, XIP execution, and robust security - optimized for industrial, automotive, and medical applications demanding long-term supply stability.
FAQ
What is the operating voltage range for the W25Q512NWEIQ TR?
The W25Q512NWEIQ TR operates from 1.65 V to 1.95 V. This strict 1.8V nominal range eliminates need for level shifters in modern low-power microcontrollers and FPGAs, and its <0.3 µA typical power-down current supports battery-backed or energy-harvesting designs. Operation outside this window may cause undefined behavior or data corruption.
Does the W25Q512NWEIQ TR support hardware reset functionality?
No, the W25Q512NWEIQ TR in its 8-pad WSON 8×6 mm (Package Code E) configuration does not include a dedicated /RESET pin. The /HOLD pin (Pin 7) serves only as a hold input and cannot perform hardware reset. For reset capability, select SOIC-16 (Package Code F), TFBGA (Code B), or WLCSP (Code Y) variants of the W25Q512NW family.
How is Quad SPI mode enabled on the W25Q512NWEIQ TR?
Quad SPI mode is enabled by setting the Quad Enable (QE) bit in Status Register-2 (SR2). This bit is non-volatile and persists across power cycles. Once QE=1, the /WP and /HOLD pins become IO2 and IO3 respectively, allowing four-line data transfer. The W25Q512NWEIQ TR supports both volatile and non-volatile write of SR2 via instruction 31h.
What erase block sizes does the W25Q512NWEIQ TR support?
The W25Q512NWEIQ TR supports uniform erase of 4 KB sectors (16,384 total), 32 KB blocks (2,048), and 64 KB blocks (1,028), plus full-chip erase. This granularity enables efficient firmware delta updates and parameter partitioning - for example, isolating bootloader (4 KB), application (64 KB), and calibration data (4 KB) in separate erasable regions.
Can the W25Q512NWEIQ TR be used for Execute-in-Place (XIP) applications?
Yes, the W25Q512NWEIQ TR supports true XIP operation via Dual or Quad SPI interfaces. Its 133 MHz clock and Fast Read Quad I/O (6Bh/6Ch) instructions deliver up to 66 MB/s sustained read throughput, enabling direct code execution without RAM shadowing - reducing BOM cost and power in Cortex-M and RISC-V microcontroller systems.
W25Q512NWEIQ TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Winbond Electronics Corporation
- Series:
- SpiFlash®
- Package/Case:
- 8-WDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- FLASH
- Technology:
- FLASH - NOR
- Memory Size:
- 512Mbit
- Memory Organization:
- 64M x 8
- Memory Interface:
- SPI - Quad I/O, QPI, DTR
- Clock Frequency:
- 133 MHz
- Write Cycle Time - Word, Page:
- 3ms
- Access Time:
- 6 ns
- Voltage - Supply:
- 1.65V ~ 1.95V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-WSON (8x6)
W25Q512NWEIQ TR FAQ
1.How can I place an order for W25Q512NWEIQ TR through Aetrix?
Please submit a Request for Quotation (RFQ) for W25Q512NWEIQ TR 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 W25Q512NWEIQ TR reliable?
The price and inventory of W25Q512NWEIQ TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for W25Q512NWEIQ TR is usually 5 days.
3.What payment methods are accepted for W25Q512NWEIQ TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for W25Q512NWEIQ TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for W25Q512NWEIQ TR?
W25Q512NWEIQ TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your W25Q512NWEIQ TR 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 W25Q512NWEIQ TR?
For technical support, including W25Q512NWEIQ TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your W25Q512NWEIQ TR requirements.
6.How does Aetrix verify that W25Q512NWEIQ TR is sourced from the original manufacturer or authorized distributors?
All W25Q512NWEIQ TR 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 W25Q512NWEIQ TR meets industry standards.
7.What is the process for return or replacement of W25Q512NWEIQ TR?
All W25Q512NWEIQ TR units undergo pre-shipment inspection (PSI). If there is an issue with W25Q512NWEIQ TR, 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 W25Q512NWEIQ TR part is unused and in its original packaging.
Return procedure for W25Q512NWEIQ TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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