Winbond Electronics Corporation W25N01GWTBIT TR

Overview

W25N01GWTBIT TR from Winbond is a 1.8V serial SLC NAND flash memory IC with 1G-bit (128MB) capacity, organized as 65,536 × 2,048-byte pages and 1,024 × 128KB erasable blocks. It supports Standard/Dual/Quad SPI interfaces up to 104MHz clock (416MHz equivalent Quad I/O), delivers 40MB/s continuous read throughput, and features on-chip 1-bit ECC, hardware/software write protection, and dual boot modes (Buffer Read default for IG, Continuous Read default for IT). It is used in embedded code storage, firmware update partitions, and industrial HMI data logging.

For engineers reviewing the W25N01GWTBIT TR datasheet, W25N01GWTBIT TR pinout, W25N01GWTBIT TR application, or W25N01GWTBIT TR equivalent, key selection considerations include its 1.7–1.95V supply range, -40°C to +85°C operation, TFBGA 8x6-mm (6x4 ball array, package code TC) footprint, BUF=0 power-up default, and compatibility with JEDEC-standard SPI command sets including Fast Read Quad I/O and Bad Block Management instructions.

Technical Context

The W25N01GWTBIT TR implements a true serial NAND architecture with internal page buffer management, supporting both Buffer Read (BUF=1) and Continuous Read (BUF=0) modes - the latter enabling single-command sequential access across the full 128MB array without intermediate Page Data Read commands. Its command set includes dedicated instructions for BBM Look-Up Table access (A5h), Last ECC Failure Page address (A9h), and OTP page programming under OTP-E=1.

It integrates volatile and OTP-configurable registers: Protection Register (SR-1) with BP[3:0], WP-E, and SRP[1:0]; Configuration Register (SR-2) with ECC-E, BUF, OTP-L, and ODS[1:0]; and Status Register-3 reporting real-time ECC status (ECC-1/ECC-0), P-FAIL/E-FAIL, and BUSY. The /WP and /HOLD pins serve dual roles - as control inputs in Standard/Dual SPI and as IO2/IO3 in Quad SPI - contingent on WP-E bit state.

Key Specifications

Pinout & Package

W25N01GWTBIT TR is packaged in a 24-ball TFBGA 8x6-mm with 6x4 ball array (package code TC), pin-compatible with W25N01GWxxTC variants. Ball pitch is 0.8mm; body size is 8.0mm × 6.0mm × 1.0mm max.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar serial NAND flash memory applications.

Compared with W25N01GWTBIT TR, W25N01GWZBIT TR offers identical functionality in a mechanically distinct TFBGA variant, while GD5F1GQ4UCYIGR trades advanced features like Continuous Read and standardized BBM for lower unit cost - making W25N01GWTBIT TR optimal for designs prioritizing firmware load speed, field reliability, and minimal driver development.

Availability

W25N01GWTBIT TR is available at Aetrix Electronics and suitable for industrial PLC firmware storage, medical device boot image retention, and automotive infotainment OS partitioning requiring stable component supply across multi-year production cycles.

Supply support for W25N01GWTBIT 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 DRAM, mobile DRAM, and serial flash memory solutions since 1987.

The W25N SpiFlash family - including W25N01GWTBIT TR - was designed to bring NAND density and endurance to SPI-bus constrained systems, bridging the gap between legacy NOR flash and parallel NAND in cost- and space-sensitive embedded applications.

FAQ

What is the default read mode for W25N01GWTBIT TR at power-up?

W25N01GWTBIT TR powers up in Continuous Read mode (BUF=0), as indicated by the "T" suffix in the part number. This allows immediate linear access to the full memory array with a single Read command (03h or 6Bh), eliminating the need for repeated Page Data Read (13h) instructions required in Buffer Read mode. The BUF bit is stored in Configuration Register (SR-2) and can be changed dynamically via Write Status Register (1Fh) instruction.

Does W25N01GWTBIT TR support hardware write protection of the entire memory array?

Yes, W25N01GWTBIT TR supports full-array hardware write protection. When the WP-E bit in Protection Register (SR-1) is set to 1 and the /WP pin is tied to GND, all program, erase, and register-write operations are disabled - rendering the entire device (including memory array, status registers, and OTP pages) read-only. Quad SPI read operations are also disabled in this mode, ensuring strict data integrity in mission-critical deployments.

How does the on-chip ECC in W25N01GWTBIT TR function during read operations?

W25N01GWTBIT TR performs automatic 1-bit error correction per 528-byte sector during every read operation when ECC-E=1 in SR-2. Corrected errors do not affect data output, but cumulative ECC status (ECC-1/ECC-0 bits in Status Register-3) increments per correction event. If uncorrectable errors occur (ECC-1:ECC-0 = 11b), the BUSY bit clears and P-FAIL is set - signaling host firmware to remap the affected page using BBM LUT data retrieved via A5h instruction.

What package type and ball configuration does W25N01GWTBIT TR use?

W25N01GWTBIT TR uses a 24-ball TFBGA 8x6-mm package with a 6x4 ball array (package code TC). Key signal balls include B2 (CLK), C2 (/CS), D2 (DO/IO1), D3 (DI/IO0), C4 (/WP/IO2), and D4 (/HOLD/IO3). Unlike the TB variant (5x5 array), TC places all NC balls in outer rows/columns - requiring specific PCB land pattern alignment per Winbond's PS0258-TC drawing.

Can W25N01GWTBIT TR be used for Execute-in-Place (XIP) applications?

Yes, W25N01GWTBIT TR supports XIP via Dual and Quad SPI interfaces. With Fast Read Dual I/O (BBh) or Fast Read Quad I/O (EBh) instructions and 104MHz clock, it achieves up to 416MHz effective bandwidth - sufficient for direct code execution in microcontrollers with SPI memory-mapped peripherals. Continuous Read mode further enhances XIP performance by enabling seamless instruction fetch across page boundaries without host intervention.