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Winbond Electronics Corporation W25Q256JWFIM TR
- Part No.:
- W25Q256JWFIM TR
- Manufacturer:
- Winbond Electronics Corporation
- Category:
- Memory
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
W25Q256JWFIM TR.pdf
- Description:
- IC FLASH 256MBIT SPI/QUAD 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,340
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Product details
Overview
W25Q256JWFIM TR from Winbond is a 1.8V, 256M-bit serial NOR flash memory supporting Dual/Quad SPI, QPI, and Double Transfer Rate (DTR) read modes. It delivers up to 133 MHz Quad I/O clock speed (532 MB/s equivalent bandwidth), features uniform 4KB sectors (8,192 total), 100K program-erase cycles, and 20-year data retention. It is used for XIP code execution, firmware storage, and parameter logging in space-constrained embedded systems.
For engineers reviewing the W25Q256JWFIM TR datasheet, W25Q256JWFIM TR pinout, W25Q256JWFIM TR application, or W25Q256JWFIM TR equivalent, key selection factors include 1.7–1.95 V supply compatibility, DTR-enabled high-speed read performance, hardware /WP and /HOLD control, 4-byte addressing support, and WSON 8-pin 6×5 mm (Package Code P) footprint.
Technical Context
The W25Q256JWFIM TR implements a flexible SPI/QPI command architecture with volatile/non-volatile status register control (including QE, BP, TB, CMP, SRP bits), enabling configurable memory protection and interface mode selection. Its dual-function pins (e.g., /WP → IO2, /HOLD → IO3 when QE=1) require explicit register configuration before Quad I/O operation.
It supports full instruction set compatibility across 3-byte and 4-byte address modes, including DTR Fast Read (0Dh/0Eh/BDh/EDh), Erase/Program Suspend/Resume, and three 256-byte OTP-locked security registers. The device uses JEDEC-standard SFDP for discoverable parameters and provides a unique 64-bit ID per unit.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 256 M-bit (32 MB), organized as 131,072 × 256-byte pages |
| Supply Voltage | 1.7 V to 1.95 V - enables low-power operation in battery-backed or energy-efficient systems |
| Max Clock Frequency | 133 MHz Quad I/O - achieves 532 MB/s effective throughput for fast boot/firmware load |
| Erase Granularity | 4 KB sector / 32 KB block / 64 KB block - supports fine-grained firmware updates and parameter storage |
| Endurance & Retention | 100,000 program-erase cycles; >20 years data retention at +85°C - suitable for long-life industrial deployments |
| Operating Temp | −40°C to +85°C - qualified for extended industrial temperature range applications |
| Interface Modes | Standard/Dual/Quad SPI, QPI, and DTR read - enables backward compatibility and future-proof bandwidth scaling |
Pinout & Package
W25Q256JWFIM TR is supplied in an 8-pad WSON package (6×5 mm, Package Code P), with exposed pad for thermal dissipation. 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.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| /CS (Pin 1) | Chip Select Input | Active-low enable: controls device selection and high-impedance output state; must transition high→low after power-up to accept commands |
| DO (IO1) (Pin 2) | Data Output / I/O1 | Unidirectional output in Standard SPI; bidirectional I/O in Dual/Quad SPI; used for read data and status feedback |
| /WP (IO2) (Pin 3) | Write Protect Input / I/O2 | Hardware write lock for status register; repurposed as IO2 when Quad Enable (QE) bit is set |
| GND (Pin 4) | Ground Reference | Primary return path for all I/O and core logic; requires low-impedance PCB connection to minimize noise |
| DI (IO0) (Pin 5) | Data Input / I/O0 | Unidirectional input in Standard SPI; bidirectional I/O in Dual/Quad SPI; carries instructions, addresses, and program data |
| CLK (Pin 6) | Serial Clock Input | Synchronizes all SPI/QPI transactions; rising edge for input, falling edge for output; max 133 MHz in Quad I/O mode |
| /HOLD (IO3) (Pin 7) | Hold Input / I/O3 | Pauses active transaction without deselecting device; repurposed as IO3 when QE=1; not available in Quad mode if /RESET is enabled |
| VCC (Pin 8) | Power Supply | 1.7–1.95 V core supply; requires local 1 µF + 100 nF decoupling near pin for stable DTR timing compliance |
Key Features
| Feature | Design Value |
|---|---|
| DTR Read Support | Enables double-data-rate sampling on CLK edges (e.g., 0Dh/BDh/EDh), doubling effective throughput without increasing clock frequency |
| 4-Byte Address Mode | Required for full 32 MB access; activated via B7h instruction; persistent setting stored in ADP bit of Status Register-1 |
| Erase/Program Suspend | Allows temporary halt of background erase/program to service urgent reads; resumes via 7Ah command - critical for real-time systems |
| Security Registers | Three 256-byte OTP-lockable registers (with LB1–LB3 bits) for secure key storage, calibration data, or cryptographic material |
| Unique 64-bit ID | Factory-programmed per-device serial number accessible via 4Bh instruction - enables secure device authentication and traceability |
| JEDEC SFDP Compliance | Standardized parameter table (5Ah) allows automatic driver configuration without hard-coded timing or geometry assumptions |
Applications
| Industrial HMI Firmware Storage | Automotive ADAS Boot Image |
|---|---|
|
Use Scenario: Storing GUI assets, firmware binaries, and configuration profiles in panel-mounted HMIs operating in −40°C to +85°C environments. IC Role / Device Role / Timing Role: Primary non-volatile code and asset storage with XIP-capable Quad I/O interface for direct execution. Use Value: 4KB sector granularity enables delta firmware updates without full reflash; DTR read reduces boot time by ~35% vs. standard SPI. |
Use Scenario: Hosting boot firmware and sensor calibration tables for radar/EPS ECUs where ASIL-B functional safety requirements apply. IC Role / Device Role / Timing Role: Secure, high-reliability boot memory with OTP-protected security registers for cryptographic keys. Use Value: 100K endurance and 20-year retention ensure lifetime validity; /WP pin + BP bits provide hardware-enforced write protection during field operation. |
| IoT Edge Gateway Configuration | Medical Diagnostic Device Log Storage |
|
Use Scenario: Persisting network credentials, OTA update metadata, and runtime diagnostics in battery-powered cellular gateways. IC Role / Device Role / Timing Role: Low-voltage (1.8 V), ultra-low-power storage with <1 µA deep power-down current. Use Value: 1.7–1.95 V operation extends battery life; Erase/Program Suspend allows concurrent log writes and sensor reads without latency penalty. |
Use Scenario: Recording patient waveforms, calibration logs, and audit trails in portable ultrasound and ECG devices requiring FDA-compliant data integrity. IC Role / Device Role / Timing Role: Tamper-resistant parameter and event log storage with unique 64-bit ID for device-level traceability. Use Value: Three OTP-locked security registers store encryption keys and calibration offsets; SFDP enables auto-adaptive driver initialization across production batches. |
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 |
|---|---|---|---|
| MX25L25645GMI-13G | 3 V supply only; no DTR support; 104 MHz max Quad SPI clock; lacks OTP security registers and 64-bit UID | Requires level-shifting in 1.8 V systems; lower bandwidth limits XIP performance; no hardware root-of-trust capability | Select only if 3 V system design and absence of DTR/security features is acceptable |
| S25FL256SAGMFI010 | 1.8 V compatible; supports DTR; includes HyperBus interface option; higher pin count (16-pin SOIC or 24-ball BGA) | Offers pin-compatible upgrade path to HyperFlash for bandwidth-critical designs; larger footprint increases PCB area cost | Prefer when future migration to HyperBus or need for dedicated /RESET pin justifies package change |
Compared with MX25L25645GMI-13G and S25FL256SAGMFI010, the W25Q256JWFIM TR uniquely combines 1.8 V operation, DTR read acceleration, OTP-secured registers, and compact 6×5 mm WSON in a single package - making it optimal for size- and power-constrained industrial and medical edge devices.
Availability
W25Q256JWFIM TR is available at Aetrix Electronics and suitable for industrial HMIs, automotive ADAS modules, and IoT edge gateways requiring stable component supply, long-term lifecycle assurance, and consistent parametric performance across production lots.
Supply support for W25Q256JWFIM 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 company specializing in specialty memory solutions, including serial NOR/NAND flash, RAM, and mobile DRAM.
The W25Q256JW family targets high-performance, low-voltage embedded systems requiring reliable code storage, secure parameter management, and scalable interface bandwidth - especially where PCB space and power efficiency are critical.
FAQ
What is the package type and footprint of the W25Q256JWFIM TR?
The W25Q256JWFIM TR uses an 8-pad WSON package measuring 6 mm × 5 mm (Package Code P) with an exposed thermal pad. Its pinout matches Figure 1a in the datasheet: /CS (1), DO/IO1 (2), /WP/IO2 (3), GND (4), DI/IO0 (5), CLK (6), /HOLD/IO3 (7), and VCC (8). This compact footprint supports high-density PCB layouts in space-constrained applications.
Does the W25Q256JWFIM TR support 4-byte addressing, and how is it enabled?
Yes, the W25Q256JWFIM TR supports 4-byte addressing for full 32 MB access. It is enabled by issuing the Enter 4-Byte Address Mode instruction (B7h). The setting persists across power cycles when the ADP bit (bit 0 of Status Register-1) is programmed to '1', ensuring reliable large-memory operation without repeated setup.
How does the Quad Enable (QE) bit affect pin functionality on the W25Q256JWFIM TR?
The QE bit (bit 1 of Status Register-2) must be set to '1' to activate Quad SPI mode. When enabled, /WP becomes IO2 and /HOLD becomes IO3 - disabling their hardware protection functions. This trade-off is documented in Section 4.2 and Figure 1a; proper register configuration is required before switching interface modes.
What security features are implemented in the W25Q256JWFIM TR?
The W25Q256JWFIM TR includes three 256-byte OTP-lockable security registers (protected by LB1–LB3 bits), a factory-programmed 64-bit unique ID (readable via 4Bh), software/hardware write protection (via /WP, BP bits, and SRP), and power supply lock-down. These features collectively support secure boot, device authentication, and tamper-resistant calibration storage.
Can the W25Q256JWFIM TR be used in systems requiring −40°C to +85°C operation?
Yes, the W25Q256JWFIM TR is fully specified and qualified for industrial temperature range operation (−40°C to +85°C), with guaranteed performance across voltage (1.7–1.95 V), timing, and endurance parameters. This makes it suitable for deployment in outdoor, automotive, and medical environments without derating.
W25Q256JWFIM TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Winbond Electronics Corporation
- Series:
- SpiFlash®
- Package/Case:
- 16-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- 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, QPI, DTR
- Clock Frequency:
- 133 MHz
- Write Cycle Time - Word, Page:
- 5ms
- Access Time:
- 6 ns
- Voltage - Supply:
- 1.7V ~ 1.95V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
W25Q256JWFIM TR FAQ
1.How can I place an order for W25Q256JWFIM TR through Aetrix?
Please submit a Request for Quotation (RFQ) for W25Q256JWFIM 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 W25Q256JWFIM TR reliable?
The price and inventory of W25Q256JWFIM TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for W25Q256JWFIM TR is usually 5 days.
3.What payment methods are accepted for W25Q256JWFIM TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for W25Q256JWFIM TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for W25Q256JWFIM TR?
W25Q256JWFIM TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your W25Q256JWFIM 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 W25Q256JWFIM TR?
For technical support, including W25Q256JWFIM TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your W25Q256JWFIM TR requirements.
6.How does Aetrix verify that W25Q256JWFIM TR is sourced from the original manufacturer or authorized distributors?
All W25Q256JWFIM 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 W25Q256JWFIM TR meets industry standards.
7.What is the process for return or replacement of W25Q256JWFIM TR?
All W25Q256JWFIM TR units undergo pre-shipment inspection (PSI). If there is an issue with W25Q256JWFIM 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 W25Q256JWFIM TR part is unused and in its original packaging.
Return procedure for W25Q256JWFIM TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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