My Inquiry
My Account
Winbond Electronics Corporation W25Q512NWEIM
- Part No.:
- W25Q512NWEIM
- Manufacturer:
- Winbond Electronics Corporation
- Category:
- Memory
- Package:
- 8-WDFN Exposed Pad
- Datasheet:
-
W25Q512NWEIM.pdf
- Description:
- IC FLASH 512MBIT SPI/QUAD 8WSON
- Quantity:
- Payment:
- Shipping:
Inventory:2,026
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
W25Q512NWEIM from Winbond is a 1.8V, 512M-bit (64MB) serial NOR flash memory supporting Dual/Quad SPI, QPI, and Double Transfer Rate (DTR) read modes. It features uniform 4KB sectors, 133MHz clock operation, <0.3µA power-down current, and operates across –40°C to +85°C. It serves as nonvolatile code storage and XIP (execute-in-place) memory in microcontroller boot systems.
For engineers reviewing the W25Q512NWEIM datasheet, W25Q512NWEIM pinout, W25Q512NWEIM application, or W25Q512NWEIM equivalent, key selection criteria include 4-byte addressing support, DTR read timing compliance, Quad Enable (QE) bit configuration, and package-specific /RESET pin availability - especially for industrial embedded boot and firmware update designs.
Technical Context
The W25Q512NWEIM implements a flexible SPI-compatible command set with hardware- and software-controlled write protection, including volatile/non-volatile status register bits (BP0–BP3, TB, CMP, SRP), individual sector lock, and three 256-byte OTP-locked security registers. Its architecture supports simultaneous erase/program suspend-resume and 4KB/32KB/64KB block erasure.
It delivers up to 66MB/s continuous read throughput via Quad I/O Fast Read (6Bh/6Ch) or DTR Quad I/O (EDh/ECh), enabled by QE=1 and ADS=1 (4-byte address mode). The device uses JEDEC-standard SFDP v1.6 for auto-configurable parameter discovery and includes a unique 64-bit serial number per unit.
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 532 MHz equivalent Quad I/O data rate (133 MHz × 4) |
| Erase Granularity | Uniform 4 KB sectors (16,384 total), plus 32 KB and 64 KB blocks - enables fine-grained firmware partitioning |
| Endurance & Retention | 100,000 program/erase cycles minimum; >20 years data retention at +85°C |
| Interface Modes | Standard SPI, Dual I/O, Quad I/O, QPI, and DTR-capable read instructions - selectable via status register and command |
| Security Features | Three 256-byte OTP-locked security registers, 64-bit unique ID, SFDP v1.6, and programmable top/bottom/complement protection |
Pinout & Package
W25Q512NWEIM is packaged in an 8-pad WSON 8×6 mm (Package Code E), with exposed thermal pad. Pin 1 is /CS; pins 2–3–5–7 are bidirectional I/Os (IO1, IO2, IO0, IO3); pin 4 is GND; pin 6 is CLK; pin 8 is VCC. The /HOLD pin doubles as IO3 in Quad mode when QE=1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| /CS (Pin 1) | Chip Select Input | Active-low enable: high = high-Z outputs and standby current; must transition high→low before instruction acceptance |
| DO / IO1 (Pin 2) | Data Output / Quad I/O Line 1 | Unidirectional output in Standard SPI; bidirectional in Dual/Quad modes - used for read data and command/address input |
| /WP / IO2 (Pin 3) | Write Protect Input / Quad I/O Line 2 | Hardware write lock for status register; repurposed as IO2 when QE=1 - requires external pull-up if unused in Quad mode |
| GND (Pin 4) | Ground Reference | Primary return path for VCC and I/O signals; connects to thermal pad for thermal dissipation |
| DI / IO0 (Pin 5) | Data Input / Quad I/O Line 0 | Unidirectional input in Standard SPI; bidirectional in Dual/Quad - carries commands, addresses, and program data |
| CLK (Pin 6) | Serial Clock Input | Edge-triggered master clock (rising for input, falling for output); timing-critical for DTR and high-speed Quad reads |
| /HOLD / IO3 (Pin 7) | Hold Input / Quad I/O Line 3 | Pauses ongoing read/write without deselecting device; becomes IO3 in Quad mode - not available as /HOLD when QE=1 |
| VCC (Pin 8) | Power Supply | 1.65–1.95 V supply; decoupling capacitor required within 5 mm of pin for stable DTR timing compliance |
Key Features
| Feature | Design Value |
|---|---|
| Dual/Quad SPI + QPI + DTR Support | Enables scalable bandwidth: 133 MHz base clock → 266 MB/s (Dual) or 532 MB/s (Quad) effective throughput with DTR |
| 4-Byte Address Mode (ADS=1) | Required for full 512M-bit addressing; activated via B7h command and retained across power cycles when ADP=1 |
| Erase/Program Suspend-Resume | Allows background firmware updates without interrupting real-time execution - critical for fail-safe OTA applications |
| OTP-Locked Security Registers | Three 256-byte regions with one-time-programmable locks prevent tampering with cryptographic keys or calibration data |
| JEDEC SFDP v1.6 Compliance | Enables automatic driver initialization: host reads parameter tables instead of hardcoding timing or command sets |
| Individual Sector Lock Capability | Per-sector (4KB) lock/unlock via 36h/39h commands - supports secure bootloader + application partitioning |
Applications
| Industrial PLC Firmware Storage | Automotive ADAS Boot Memory |
|---|---|
Use Scenario: Storing boot firmware and safety-critical configuration data in programmable logic controllers with extended temperature operation. IC Role / Device Role / Timing Role: Primary nonvolatile boot memory providing XIP-capable code execution and field-upgradable firmware images. Use Value: 4KB sector granularity enables atomic firmware patching; >20-year retention ensures reliability over 15+ year product lifecycles. |
Use Scenario: Hosting boot code and sensor calibration parameters for radar/EPS ECUs operating in –40°C to +85°C environments. IC Role / Device Role / Timing Role: Secure, high-reliability NOR flash with OTP-protected calibration data and SFDP-driven driver compatibility. Use Value: Unique 64-bit ID enables traceability; security registers store asymmetric keys for secure boot verification. |
| Medical Imaging System Code Storage | 5G Baseband Firmware Update |
Use Scenario: Holding diagnostic firmware and DICOM protocol stacks in portable ultrasound devices requiring low-power standby. IC Role / Device Role / Timing Role: Low-voltage (1.8V) serial flash enabling direct interface with ARM Cortex-A/M cores and power-gated subsystems. Use Value: <0.3 µA power-down current extends battery life; DTR read mode reduces CPU wait states during image processing startup. |
Use Scenario: Supporting dual-bank firmware updates in massive MIMO radio units with strict timing constraints on reboot sequences. IC Role / Device Role / Timing Role: High-throughput flash enabling parallel read/write operations via suspend-resume for zero-downtime field upgrades. Use Value: 66 MB/s continuous read sustains real-time baseband processing; 100K endurance supports frequent field updates. |
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 |
|---|---|---|---|
| Winbond W25Q512JWEIQ | Same density and pinout, but rated for industrial temp (–40°C to +105°C) and supports octal DTR mode | Required for extended-temperature base station radios or rail signaling systems | Select W25Q512JWEIQ only if >+85°C operation or octal interface is needed; W25Q512NWEIM suffices for standard industrial use |
| Micron MT25QL512ABB8E12-0SIT | 512Mb, 1.8V, supports DTR but uses different status register layout and lacks SFDP v1.6 | Requires custom driver adaptation; no auto-discovery of timing parameters | Choose MT25QL512ABB8E12-0SIT only when existing Micron ecosystem integration outweighs SFDP convenience |
Compared with W25Q512JWEIQ, W25Q512NWEIM offers identical core functionality at lower cost and simpler qualification for standard industrial use, while MT25QL512ABB8E12-0SIT trades SFDP automation for tighter vendor lock-in and legacy driver compatibility.
Availability
W25Q512NWEIM is available at Aetrix Electronics and suitable for industrial control, automotive infotainment, and medical imaging systems requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.
Supply support for W25Q512NWEIM 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, mobile DRAM, and serial flash memory solutions since 1987.
The W25Q series targets embedded systems requiring high-density, low-voltage, and feature-rich serial NOR flash - optimized for code storage, XIP execution, and secure firmware updates in space-constrained designs.
FAQ
What is the difference between W25Q512NWEIM and W25Q512NW-DTR?
W25Q512NWEIM is the specific orderable part number denoting the 8-pad WSON 8×6 mm package (Code E) with industrial temperature grade (–40°C to +85°C) and DTR capability. W25Q512NW-DTR is the generic family designation used in the datasheet; all W25Q512NWEIM units conform to the W25Q512NW-DTR specification, including 133MHz DTR read support and Quad Enable functionality.
Does W25Q512NWEIM support 4-byte addressing, and how is it enabled?
Yes, W25Q512NWEIM supports 4-byte addressing to access its full 512M-bit capacity. It is enabled by issuing the Enter 4-Byte Address Mode command (B7h). The setting persists across power cycles only if the ADP bit (bit 0 of Status Register-3) is set to 1; otherwise, it resets to 3-byte mode on power-up.
Is the /RESET pin available on the W25Q512NWEIM package?
No, the W25Q512NWEIM (8-pad WSON) does not include a dedicated /RESET pin. The /HOLD pin (Pin 7) serves as IO3 in Quad mode but cannot function as hardware reset. Hardware reset is only available on SOIC-16, TFBGA, and WLCSP packages - W25Q512NWEIM relies solely on software reset (66h/99h commands).
How is Quad SPI mode activated on W25Q512NWEIM?
Quad SPI mode on W25Q512NWEIM is activated by setting the Quad Enable (QE) bit (bit 1 of Status Register-2) to 1 via Write Status Register-2 (31h) command. Once enabled, pins /WP and /HOLD become IO2 and IO3 respectively, and Quad I/O instructions (e.g., 6Bh, EBh) become functional.
What package type does W25Q512NWEIM use, and what are its key mechanical features?
W25Q512NWEIM uses an 8-pad WSON package measuring 8 mm × 6 mm (Package Code E) with an exposed thermal pad on the bottom. It has no leads, requires solder paste stencil design for thermal pad reflow, and supports automated optical inspection (AOI) due to its flat, land-grid footprint.
W25Q512NWEIM Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Winbond Electronics Corporation
- Series:
- SpiFlash®
- Package/Case:
- 8-WDFN Exposed Pad
- Packaging:
- Tray
- 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)
W25Q512NWEIM FAQ
1.How can I place an order for W25Q512NWEIM through Aetrix?
Please submit a Request for Quotation (RFQ) for W25Q512NWEIM 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 W25Q512NWEIM reliable?
The price and inventory of W25Q512NWEIM are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for W25Q512NWEIM is usually 5 days.
3.What payment methods are accepted for W25Q512NWEIM?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for W25Q512NWEIM transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for W25Q512NWEIM?
W25Q512NWEIM orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your W25Q512NWEIM 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 W25Q512NWEIM?
For technical support, including W25Q512NWEIM datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your W25Q512NWEIM requirements.
6.How does Aetrix verify that W25Q512NWEIM is sourced from the original manufacturer or authorized distributors?
All W25Q512NWEIM 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 W25Q512NWEIM meets industry standards.
7.What is the process for return or replacement of W25Q512NWEIM?
All W25Q512NWEIM units undergo pre-shipment inspection (PSI). If there is an issue with W25Q512NWEIM, 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 W25Q512NWEIM part is unused and in its original packaging.
Return procedure for W25Q512NWEIM:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
W25Q512NWEIM Tags
-
M24C02-WMN6TP
STMicroelectronics
-
AT24C02C-XHM-T
Microchip Technology
-
AT21CS01-STUM10-T
Microchip Technology
-
AT24C02C-SSHM-T
Microchip Technology
-
24LC01BT-I/OT
Microchip Technology
-
M24C02-FMC6TG
STMicroelectronics
-
AT24CS02-SSHM-T
Microchip Technology
-
93LC46BT-I/OT
Microchip Technology
-
AT24C04C-SSHM-T
Microchip Technology
-
24LC01BT-I/SN
Microchip Technology
-
24AA02UIDT-I/OT
Microchip Technology
-
AT24C08C-STUM-T
Microchip Technology
Tech Hub
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
