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Winbond Electronics Corporation W25M512JWBIQ
- Part No.:
- W25M512JWBIQ
- Manufacturer:
- Winbond Electronics Corporation
- Category:
- Memory
- Package:
- 24-TBGA
- Datasheet:
-
W25M512JWBIQ.pdf
- Description:
- IC FLASH 512MBIT SPI 24TFBGA
- Quantity:
- Payment:
- Shipping:
Inventory:4,250
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Product details
Overview
W25M512JWBIQ from Winbond is a 1.8V serial MCP (Multi-Chip Package) flash memory comprising two stacked 256M-bit W25Q256JW-IQ dies in a single 8-pad WSON 8×6-mm package, supporting concurrent read-while-program/erase operations, 104MHz SPI clock, and quad I/O interface with 52MB/s continuous data transfer rate for embedded storage in space-constrained IoT and industrial controllers.
For engineers reviewing the W25M512JWBIQ datasheet, W25M512JWBIQ pinout, W25M512JWBIQ application, or W25M512JWBIQ equivalent, key selection considerations include dual-die concurrency support, 4KB sector granularity, software die select (C2h) instruction, and 1.7–1.95V supply compatibility with legacy 3.3V SPI host interfaces via level-shifting.
Technical Context
The W25M512JWBIQ implements SpiStack® architecture with two independent W25Q256JW-IQ dies sharing one SPI bus, controlled via Software Die Select (C2h) instruction and factory-assigned Die ID#; only one die is active on the bus at any time to prevent contention. It supports 3-byte and 4-byte addressing modes, with extended address register enabling access beyond 16MB per die.
It delivers true concurrent operations: one die can execute program/erase while the other serves read requests, eliminating suspend/resume overhead. All standard, dual, and quad SPI instructions-including Fast Read Quad I/O (EBh/ECh), Page Program (02h/12h), and Sector Erase (20h/21h)-are supported across both dies with identical timing and register mapping.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Total Density | 512M-bit (2 × 256M-bit), enabling 64MB total storage in low-pin-count package |
| Interface Speed | 104MHz SPI clock, delivering 208MB/s (dual) or 416MB/s (quad) effective bandwidth |
| Memory Organization | 131,072 pages × 256 bytes per die; uniform 4KB sectors allow fine-grained data/parameter partitioning |
| Endurance & Retention | 100,000 program/erase cycles per sector; 20+ years data retention at +85°C |
| Supply Voltage | 1.7V–1.95V core supply; compatible with ultra-low-power MCU domains without external regulators |
| Operating Temp | −40°C to +85°C industrial grade; validated for automotive infotainment and industrial HMI use |
| Reset Support | Hardware /RESET pin absent in WSON package; reset handled via software instruction (66h/99h) |
Pinout & Package
W25M512JWBIQ uses an 8-pad WSON 8×6-mm (Package Code E) with exposed thermal pad. Pin 4 is GND and Pin 8 is VCC; no dedicated /RESET pin - reset functionality is software-only via Enable Reset (66h) and Reset Device (99h) instructions.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 (/CS) | Chip Select Input | Active-low enable for SPI transaction initiation; must be asserted before CLK edge for valid command latch |
| 2 (DO/IO1) | Data Output / I/O1 | Primary output during standard/dual SPI reads; bidirectional in dual/quad I/O modes |
| 3 (IO2) | Data Input/Output 2 | Enabled only in quad SPI mode; carries address/data bits during fast quad I/O transfers |
| 4 (GND) | Ground Reference | Signal and power return path; requires low-inductance connection to minimize noise on I/O lines |
| 5 (DI/IO0) | Data Input / I/O0 | Primary input for commands/address; bidirectional in dual/quad I/O modes |
| 6 (CLK) | Serial Clock Input | Master-generated clock up to 104MHz; edge-triggered sampling of DI/IO0 and latching of DO/IO1 |
| 7 (IO3) | Data Input/Output 3 | Enabled only in quad SPI mode; completes 4-bit parallel data/address transfer per clock cycle |
| 8 (VCC) | Power Supply | 1.7–1.95V core supply; requires local 1µF ceramic decoupling adjacent to pin |
Key Features
| Feature | Design Value |
|---|---|
| Concurrent Operations | Independent die access enables simultaneous read from one die while programming/erasing the other - eliminates latency penalties in firmware update or logging scenarios |
| Software Die Select (C2h) | Single-byte instruction selects active die (00h or 01h); enables deterministic control without hardware reconfiguration or PCB layout changes |
| Quad I/O Fast Read (EBh/ECh) | Delivers 52MB/s sustained throughput using all four I/O lines; reduces host CPU overhead vs. standard SPI by >3× |
| 4KB Uniform Sectors | Enables atomic parameter updates and wear-leveling across 128K sectors per die - critical for OTA firmware metadata and calibration storage |
| Volatile & Non-Volatile Status Registers | BP3–BP0, TB, CMP, and WPS bits retain protection state across power cycles or support runtime reconfiguration as needed |
| Security Register Locks (OTP) | Three 256-byte security registers with one-time-programmable locks prevent unauthorized firmware signing key exposure or secure boot configuration tampering |
Applications
| Industrial PLC Firmware Storage | Automotive Infotainment Boot Memory |
|---|---|
Use Scenario: Storing and updating real-time control logic and I/O mapping tables in programmable logic controllers with minimal downtime. IC Role / Device Role / Timing Role: Primary non-volatile firmware repository with concurrent read-while-program capability to maintain operational continuity during field upgrades. Use Value: Eliminates system freeze during firmware patching; 4KB sectors allow incremental updates to logic modules without erasing full application image. | Use Scenario: Hosting boot code and OS kernel for head-unit systems requiring fast cold-boot (<500ms) and secure over-the-air (OTA) updates. IC Role / Device Role / Timing Role: Dual-die boot memory where one die holds verified production firmware while the other receives and validates OTA payloads. Use Value: Enables A/B firmware partitioning with zero-latency switching; quad I/O speed ensures boot ROM fetch meets automotive ASIL-B timing budgets. |
| Edge AI Sensor Node Configuration | Medical Device Calibration Data Vault |
Use Scenario: Storing sensor fusion models, device-specific calibration coefficients, and runtime inference parameters in battery-powered edge nodes. IC Role / Device Role / Timing Role: Low-voltage (1.8V) persistent storage for volatile model weights and static calibration data accessed during wake-up cycles. Use Value: 10µA standby current extends battery life; individual sector lock (36h/39h) prevents accidental overwrite of factory-calibrated sensor offsets. | Use Scenario: Securing patient-specific calibration profiles and regulatory audit logs in portable diagnostic equipment with traceability requirements. IC Role / Device Role / Timing Role: Tamper-resistant storage for FDA/ISO 13485-compliant calibration records, leveraging OTP-locked security registers and unique die ID. Use Value: 64-bit Unique ID per die enables cryptographic binding of calibration data to hardware; SFDP register allows host to auto-detect memory geometry and protection features. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial MCP flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MX66UM1G45GXDIO | 1Gb density (2×512Mb), 1.8V, 133MHz max clock; lacks software die select and concurrent operation support | Supports high-throughput streaming but cannot perform read-while-program; requires host-side arbitration for dual-die access | Select when raw bandwidth > concurrency; avoid if firmware update atomicity or low-latency logging is required |
| S25FL512SAGMFI010 | 512Mb single-die, 3.0V supply, 108MHz clock; includes HyperBus interface option but no MCP stacking | Higher voltage margin simplifies power design but excludes ultra-low-power 1.8V systems; no die-level isolation for security partitioning | Select for 3.3V host ecosystems needing JEDEC JESD216-compliant SFDP; not suitable for SpiStack®-dependent concurrency workflows |
Compared with MX66UM1G45GXDIO and S25FL512SAGMFI010, W25M512JWBIQ uniquely delivers die-isolated concurrent operations within a single 8-pin footprint, enabling deterministic firmware update pipelines and hardware-enforced security domain separation - capabilities absent in both alternatives.
Availability
W25M512JWBIQ is available at Aetrix Electronics and suitable for industrial PLC firmware storage, automotive infotainment boot memory, edge AI sensor node configuration, and medical device calibration data vault applications requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for W25M512JWBIQ 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 global leader in specialty DRAM, serial flash, and mobile DRAM solutions, serving automotive, industrial, communications, and consumer markets since 1987.
The W25M SpiStack® product line was designed to deliver high-density serial flash in minimal footprint packages while enabling true concurrent operations - addressing the growing need for seamless firmware updates and secure multi-domain storage in resource-constrained embedded systems.
FAQ
Does W25M512JWBIQ support hardware reset via /RESET pin?
No. The W25M512JWBIQ in WSON 8×6-mm package (suffix BIQ) does not include a /RESET pin. Reset functionality is implemented exclusively through software commands: Enable Reset (66h) followed by Reset Device (99h). This differs from SOIC and TFBGA variants (e.g., W25M512JWFIQ, W25M512JWBBIQ) which provide dedicated /RESET pins. Host firmware must use the documented instruction sequence to reset W25M512JWBIQ reliably.
How does concurrent operation work in W25M512JWBIQ without bus contention?
W25M512JWBIQ uses SpiStack® architecture with Software Die Select (C2h) to activate only one die at a time on the shared SPI bus. While one die executes program/erase, the other remains idle but retains its internal state. When the host issues C2h with the target die ID, that die gains exclusive bus control - preventing contention. Concurrent read-while-program is achieved by alternating die selection between read and write phases under host orchestration, not simultaneous bus access.
What is the minimum programmable unit and erase granularity for W25M512JWBIQ?
The W25M512JWBIQ supports programming in increments of 1–256 bytes per page (256-byte page size), with erasure available in 4KB sectors, 32KB blocks, 64KB blocks, or full chip. Each die contains 131,072 pages organized into 32,768 uniform 4KB sectors. This granularity enables precise firmware module updates and secure parameter storage without disturbing unrelated data regions - essential for functional safety and OTA update integrity.
Can W25M512JWBIQ be used with standard 3.3V SPI microcontrollers?
Yes, but level translation is required. W25M512JWBIQ operates strictly at 1.7–1.95V and is not 3.3V-tolerant. Direct connection to 3.3V SPI hosts will damage the device. A bidirectional level shifter (e.g., TXS0108E) must be used on all signals (/CS, CLK, IO0–IO3) to translate between 3.3V logic and 1.8V I/O. Power supply must remain at 1.8V; do not connect VCC to 3.3V rails.
Is the 64-bit Unique ID accessible per die in W25M512JWBIQ?
Yes. Each stacked die in W25M512JWBIQ has a factory-programmed, globally unique 64-bit ID readable via Read Unique ID Number (4Bh) instruction after selecting the target die with Software Die Select (C2h). The ID is stored in one-time-programmable (OTP) memory and cannot be modified. This enables hardware-rooted device identity binding for secure boot, license enforcement, and calibration data traceability - critical for medical and industrial certification.
W25M512JWBIQ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Winbond Electronics Corporation
- Series:
- SpiFlash®
- Package/Case:
- 24-TBGA
- 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
- Clock Frequency:
- 104 MHz
- Write Cycle Time - Word, Page:
- 5ms
- Access Time:
- 7 ns
- Voltage - Supply:
- 1.7V ~ 1.95V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-TFBGA (6x8)
W25M512JWBIQ FAQ
1.How can I place an order for W25M512JWBIQ through Aetrix?
Please submit a Request for Quotation (RFQ) for W25M512JWBIQ 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 W25M512JWBIQ reliable?
The price and inventory of W25M512JWBIQ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for W25M512JWBIQ is usually 5 days.
3.What payment methods are accepted for W25M512JWBIQ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for W25M512JWBIQ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for W25M512JWBIQ?
W25M512JWBIQ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your W25M512JWBIQ 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 W25M512JWBIQ?
For technical support, including W25M512JWBIQ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your W25M512JWBIQ requirements.
6.How does Aetrix verify that W25M512JWBIQ is sourced from the original manufacturer or authorized distributors?
All W25M512JWBIQ 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 W25M512JWBIQ meets industry standards.
7.What is the process for return or replacement of W25M512JWBIQ?
All W25M512JWBIQ units undergo pre-shipment inspection (PSI). If there is an issue with W25M512JWBIQ, 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 W25M512JWBIQ part is unused and in its original packaging.
Return procedure for W25M512JWBIQ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
W25M512JWBIQ Tags
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M24C02-WMN6TP
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AT24C02C-XHM-T
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AT21CS01-STUM10-T
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M24C02-FMC6TG
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