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Winbond Electronics Corporation W25Q256JVMIM
- Part No.:
- W25Q256JVMIM
- Manufacturer:
- Winbond Electronics Corporation
- Category:
- Memory
- Package:
- 8-WLGA Exposed Pad
- Datasheet:
-
W25Q256JVMIM.pdf
- Description:
- IC FLASH 256MBIT SPI/QUAD 8WFLGA
- Quantity:
- Payment:
- Shipping:
Inventory:2,028
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Product details
Overview
W25Q256JVMIM from Winbond is a 256M-bit (32MB) serial NOR flash memory supporting Dual/Quad SPI, QPI, and Double Transfer Rate (DTR) read modes with 133MHz clock, 4KB uniform sectors, and industrial temperature range (–40°C to +85°C). It features 8-pin WFLGA 6×5-mm package (Package Code M), 100K program-erase cycles per sector, and 20-year data retention - used for code execution in place (XIP), firmware storage, and boot code in microcontroller-based embedded systems.
For engineers reviewing the W25Q256JVMIM datasheet, W25Q256JVMIM pinout, W25Q256JVMIM application, or W25Q256JVMIM equivalent, key selection factors include 4-byte addressing support, Quad Enable (QE) bit configuration, /HOLD vs /RESET pin behavior in 8-pin packages, DTR timing compliance, and hardware write protection via /WP and status register lock bits.
Technical Context
The W25Q256JVMIM implements a flexible SPI-compatible interface with configurable I/O modes: standard single I/O (DI/DO), dual I/O (IO0/IO1), quad I/O (IO0–IO3), and QPI with DTR capability. Its internal architecture includes a 131,072-page array (256 bytes/page), programmable block protection (BP0–BP3, TB, CMP), and volatile/non-volatile status registers controlling erase/write permissions and driver strength.
It supports both 3-byte and 4-byte address modes, with ADP bit determining power-up default; QE bit in Status Register-2 must be set for quad I/O operation, repurposing /WP and /HOLD as IO2 and IO3. The device uses JEDEC-standard SFDP for discoverable parameters and includes three 256-byte one-time-programmable security registers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 256 M-bit (32 MB), organized as 131,072 × 256-byte pages |
| Operating Voltage | 2.7 V to 3.6 V - compatible with 3.3 V logic systems without level shifting |
| Max Clock Frequency | 133 MHz SPI - enables 532 MB/s effective quad I/O throughput with DTR |
| Erase Granularity | Uniform 4 KB sectors (8,192 total), plus 32 KB and 64 KB blocks - supports fine-grained firmware partitioning |
| Data Retention | 20 years at +85°C - validated for long-life industrial deployments |
| Endurance | 100,000 program-erase cycles per sector - sufficient for field firmware updates over product lifetime |
| Temperature Range | –40°C to +85°C (Industrial Grade) - qualified for uncontrolled ambient environments |
| Power-down Current | 1 µA typical - enables ultra-low-power sleep states in battery-backed systems |
Pinout & Package
W25Q256JVMIM uses an 8-pad WFLGA 6×5-mm package (Package Code M), surface-mount, lead-free, RoHS-compliant. Pad layout is identical to WSON 8×6-mm but with smaller footprint and thinner profile.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 /CS | Chip Select Input | Active-low enable; high-impedance DO during deselect; required high-to-low transition after power-up to accept instructions |
| 2 DO (IO1) | Data Output / Bidirectional I/O | Unidirectional output in standard SPI; bidirectional in dual/quad modes; falls on CLK falling edge |
| 3 /WP (IO2) | Write Protect Input / Bidirectional I/O | Hardware lock for status register when QE=0; becomes IO2 in quad mode (QE=1) |
| 4 GND | Ground Reference | Primary return path for all I/O and core logic; must be low-impedance connection |
| 5 DI (IO0) | Data Input / Bidirectional I/O | Unidirectional input in standard SPI; bidirectional in dual/quad modes; rises on CLK rising edge |
| 6 CLK | Serial Clock Input | Master-controlled timing signal; defines setup/hold windows for all I/O transfers |
| 7 /HOLD or /RESET (IO3) | Hold or Reset Input / Bidirectional I/O | Pauses ongoing transfer when active low; functions as /RESET only if QE=0 and configured via status register |
| 8 VCC | Power Supply | 2.7–3.6 V supply; requires local 100 nF ceramic decoupling near pad |
Key Features
| Feature | Design Value |
|---|---|
| Dual/Quad SPI + QPI + DTR Read Modes | Enables 532 MB/s effective bandwidth and true XIP execution without external SRAM buffering |
| 4-Byte Addressing Support | Required for full 32 MB access; enabled via B7h instruction and controlled by ADP bit in status register |
| Erase/Program Suspend & Resume | Allows background operations (e.g., logging) to pause flash writes/erases without data loss or timeout failure |
| Three 256-Byte Security Registers | OTP-lockable storage for keys, calibration data, or secure boot assets - isolated from main array |
| JEDEC SFDP Register | Provides standardized, host-readable parameter table for automatic driver configuration and compatibility validation |
| 64-Bit Unique Serial Number | Factory-programmed per-device ID for traceability, licensing, or anti-cloning in production firmware |
Applications
| Industrial PLC Firmware Storage | Medical Device Boot Image |
|---|---|
Use Scenario: Storing certified bootloader and application firmware in DIN-rail mounted controllers with no field service access. IC Role / Device Role / Timing Role: Primary non-volatile code storage with XIP-capable Quad SPI interface for deterministic boot latency. Use Value: 4KB sector granularity allows independent update of safety-critical boot code without erasing operational firmware partitions. |
Use Scenario: Holding FDA-approved boot image and diagnostic firmware in portable ultrasound units requiring tamper-evident storage. IC Role / Device Role / Timing Role: Secure, high-reliability flash memory with OTP security registers for cryptographic key storage. Use Value: 20-year data retention and 100K endurance ensure firmware integrity across multi-year device lifecycle without refresh. |
| Automotive Infotainment Head Unit | Smart Energy Meter Firmware |
Use Scenario: Hosting Linux kernel, rootfs, and UI assets in automotive-grade head units operating in –40°C to +85°C cabins. IC Role / Device Role / Timing Role: High-speed Quad SPI DTR interface delivering >66 MB/s continuous read for rapid GUI loading. Use Value: Industrial temperature rating and 133 MHz clock support meet AEC-Q100 indirect requirements for under-dash placement. |
Use Scenario: Storing AMI firmware and tariff tables in utility-grade meters deployed in outdoor enclosures. IC Role / Device Role / Timing Role: Low-power serial flash with 1 µA deep-sleep current enabling battery backup during grid outages. Use Value: Hardware write protection (/WP pin + BP bits) prevents accidental corruption during remote OTA updates over PLC or RF links. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial NOR flash applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MX25L25645GMI-10G | 256 M-bit, 104 MHz max clock, no DTR support, SOIC-16 only, lacks /RESET pin in 8-pin variants | Lower bandwidth; no DTR or QPI - limits XIP performance in high-speed UI applications | Choose when DTR/QPI not required and SOIC-16 PCB footprint is fixed; verify /HOLD function suffices for reset needs |
| S25FL256SAGMFV001 | 256 M-bit, 80 MHz max clock, supports HyperBus but not DTR; includes built-in ECC, different security register model | Requires HyperFlash controller; ECC adds reliability but increases driver complexity and latency | Prefer where error correction is mandatory and controller supports HyperBus; avoid if DTR bandwidth or JEDEC SFDP auto-configuration needed |
Compared with MX25L25645GMI-10G and S25FL256SAGMFV001, the W25Q256JVMIM delivers higher bandwidth via DTR and broader interface flexibility (SPI/QPI/DTR), while maintaining pin compatibility with legacy 8-pin layouts - making it optimal for new designs prioritizing XIP speed and software-defined configuration.
Availability
W25Q256JVMIM is available at Aetrix Electronics and suitable for industrial control, medical diagnostics, and automotive infotainment applications requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.
Supply support for W25Q256JVMIM 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 serial NOR/NAND flash, RAM, and mobile DRAM.
The W25Q series targets embedded systems needing high-speed, low-power, and secure code storage - designed specifically for XIP, firmware updates, and trusted boot applications in industrial and automotive environments.
FAQ
What is the package type and footprint of W25Q256JVMIM?
W25Q256JVMIM uses an 8-pad WFLGA (Wafer-Level Glass Array) package measuring 6 mm × 5 mm with 0.5 mm pitch. It is a bottom-terminated, lead-free, RoHS-compliant surface-mount device. This footprint matches Winbond's Package Code M and is distinct from SOIC-16 or TFBGA variants - requiring specific land pattern design per JESD-STD-012.
Does W25Q256JVMIM support 4-byte addressing, and how is it enabled?
Yes, W25Q256JVMIM supports 4-byte addressing to access its full 32 MB capacity. It is enabled by issuing the Enter 4-Byte Address Mode instruction (B7h). The ADP bit in Status Register-1 determines whether the device powers up in 3-byte or 4-byte mode; ADP is non-volatile and writable via Write Status Register-1 (01h).
How does the /HOLD pin function differ between standard SPI and quad SPI modes on W25Q256JVMIM?
In standard or dual SPI mode (QE = 0), Pin 7 functions as /HOLD to pause ongoing transfers. In quad SPI mode (QE = 1), Pin 7 becomes IO3 and /HOLD is disabled. For reset functionality in 8-pin packages, /RESET must be enabled via the HOLD/RST bit in Status Register-3 - otherwise Pin 7 remains IO3-only.
What security features are implemented in W25Q256JVMIM beyond basic write protection?
W25Q256JVMIM includes three 256-byte one-time-programmable (OTP) security registers, a 64-bit unique serial number, JEDEC SFDP for standardized parameter discovery, and individual sector/block lock/unlock commands (36h/39h/3Dh). Block protection can be set top/bottom or complemented, and status register lock (SRP/SRL bits) prevents unauthorized configuration changes.
Is W25Q256JVMIM pin-compatible with other W25Q256JV variants like W25Q256JVIQ or W25Q256JVFIQ?
No - W25Q256JVMIM (WFLGA 6×5-mm, Code M) is not pin-compatible with W25Q256JVIQ (SOIC-16, Code F) or W25Q256JVFIQ (TFBGA, Code B/C). While electrical functionality and instruction set are identical, pad/ball assignments and pin counts differ significantly. Migration requires PCB redesign and layout verification per package-specific mechanical drawings.
W25Q256JVMIM Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Winbond Electronics Corporation
- Series:
- SpiFlash®
- Package/Case:
- 8-WLGA Exposed Pad
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- FLASH
- Technology:
- FLASH - NOR
- Memory Size:
- 256Mbit
- Memory Organization:
- 32M x 8
- Memory Interface:
- SPI - Quad I/O
- Clock Frequency:
- 133 MHz
- Write Cycle Time - Word, Page:
- 3ms
- Access Time:
- 6 ns
- Voltage - Supply:
- 2.7V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-WFLGA (6x5)
W25Q256JVMIM FAQ
1.How can I place an order for W25Q256JVMIM through Aetrix?
Please submit a Request for Quotation (RFQ) for W25Q256JVMIM 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 W25Q256JVMIM reliable?
The price and inventory of W25Q256JVMIM are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for W25Q256JVMIM is usually 5 days.
3.What payment methods are accepted for W25Q256JVMIM?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for W25Q256JVMIM transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for W25Q256JVMIM?
W25Q256JVMIM orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your W25Q256JVMIM 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 W25Q256JVMIM?
For technical support, including W25Q256JVMIM datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your W25Q256JVMIM requirements.
6.How does Aetrix verify that W25Q256JVMIM is sourced from the original manufacturer or authorized distributors?
All W25Q256JVMIM 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 W25Q256JVMIM meets industry standards.
7.What is the process for return or replacement of W25Q256JVMIM?
All W25Q256JVMIM units undergo pre-shipment inspection (PSI). If there is an issue with W25Q256JVMIM, 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 W25Q256JVMIM part is unused and in its original packaging.
Return procedure for W25Q256JVMIM:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
W25Q256JVMIM Tags
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M24C02-WMN6TP
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AT21CS01-STUM10-T
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M24C02-FMC6TG
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AT24CS02-SSHM-T
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AT24C04C-SSHM-T
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