Winbond Electronics Corporation W25M02GVTBJT

Overview

W25M02GVTBJT from Winbond is a 2 G-bit (2 × 1 G-bit) Serial SLC NAND Flash MCP built with two stacked W25N01GV dies in a single TFBGA 8x6-mm package (code TB), supporting Dual/Quad SPI, Continuous Read Mode, and concurrent die operations. It delivers 50 MB/s continuous data transfer, 104 MHz clock rate, and on-chip 1-bit ECC for embedded storage in space-constrained systems.

For engineers reviewing the W25M02GVTBJT datasheet, W25M02GVTBJT pinout, W25M02GVTBJT application, or W25M02GVTBJT equivalent, key selection criteria include dual-die concurrency support, 128 KB uniform block erase, software die select (C2h), buffer vs. continuous read mode trade-offs, and hardware/software write protection configuration via SRP/BP bits and /WP pin behavior.

Technical Context

The W25M02GVTBJT implements SpiStack® architecture with factory-assigned Die ID#s, enabling independent access to each of two stacked W25N01GV dies via Software Die Select (C2h) instruction while sharing all I/O pins. Only one die is active on the SPI bus at any time to prevent contention.

It supports three operational modes: Standard SPI (DI/DO), Dual SPI (IO0/IO1), and Quad SPI (IO0–IO3), with /WP and /HOLD repurposed as IO2/IO3 in Quad mode. The device features volatile and OTP-lockable status registers (SR-1/SR-2), ECC enable (ECC-E), and BUF bit controlling Buffer Read vs. Continuous Read mode.

Key Specifications

Pinout & Package

W25M02GVTBJT uses a 24-ball TFBGA 8×6-mm package (package code TB, 5×5 ball array). Ball pitch is 0.8 mm; body dimensions are 8.0 mm × 6.0 mm × 1.0 mm max. Pin 1 (B2) is CLK; VCC (C4) and GND (B3) are adjacent for low-inductance decoupling.

Key Features

Applications

Equivalent & Alternatives

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

Compared with W25M02GVTCJT, W25M02GVTBJT offers identical functionality but mandates different PCB footprint and routing; versus GD5F2GQ4UCYIGR, W25M02GVTBJT trades raw speed for architectural advantages like die-select concurrency and zero-overhead continuous reads - reducing host driver complexity and improving deterministic latency.

Availability

W25M02GVTBJT is available at Aetrix Electronics and suitable for firmware storage, industrial HMI, and automotive infotainment applications requiring stable component supply, long-term lifecycle assurance, and qualified industrial temperature grade performance.

Supply support for W25M02GVTBJT 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 NOR/NAND flash, RAM, and trusted computing components since 1987.

The W25M SpiStack® product line was designed to deliver high-density serial NAND in ultra-compact packages for space-constrained embedded systems, enabling concurrent die access and simplified code execution without external controllers.

FAQ

What is the package type and pin count of W25M02GVTBJT?

W25M02GVTBJT uses a 24-ball TFBGA 8×6-mm package with a 5×5 ball array (package code TB). It has eight functional signal terminals: /CS, CLK, DI (IO0), DO (IO1), /WP (IO2), /HOLD (IO3), VCC, and GND. The remaining 16 balls are NC or ground/power pads per the mechanical drawing in datasheet section 11.3.

Does W25M02GVTBJT support true concurrent read and program operations across both dies?

Yes - W25M02GVTBJT supports "Read while Program/Erase" across dies via SpiStack® architecture. After selecting Die #1 with C2h, it can execute Program/Erase while Die #0 remains idle; then switching to Die #0 allows immediate read access without waiting for Die #1's operation to complete. This concurrency is confirmed in Section 6.1.1 and Figure 2c of the datasheet.

How does Continuous Read Mode differ from Buffer Read Mode in W25M02GVTBJT?

In Continuous Read Mode (BUF=0), a single READ command accesses the entire memory array linearly - no need to issue Page Data Read (13h) between pages. In Buffer Read Mode (BUF=1), each read requires explicit Page Data Read before accessing data. The mode is selected via the BUF bit in Status Register-2 (Bxh), and the command structure differs only for READ - all other instructions remain identical.

Can the /WP pin be used for both hardware write protection and Quad SPI I/O in W25M02GVTBJT?

Yes - /WP functions as IO2 in Quad SPI mode when WP-E=0 (Software Protection mode), enabling full 4-line data transfer. When WP-E=1 (Hardware Protection mode), /WP becomes a dedicated active-low write protect input; tying it to GND disables all Program/Erase/Write Status operations. This dual-role behavior is defined in Sections 4.4 and 7.1.2 of the datasheet.

What ECC capability does W25M02GVTBJT provide, and how is it enabled?

W25M02GVTBJT includes on-chip 1-bit ECC (1 bit per 528-byte page) that corrects single-bit errors automatically during read. ECC is enabled by setting the ECC-E bit (bit 4) in Status Register-2 (Bxh). When enabled, ECC-1/ECC-0 bits in Status Register-3 report correction status per page read, and P-FAIL/E-FAIL flags indicate unrecoverable errors.