Winbond Electronics Corporation W25N02JWTBIC TR

Overview

W25N02JWTBIC TR from Winbond is a 1.8V 2G-bit Serial SLC NAND Flash Memory with Dual/Quad SPI interface, supporting up to 166MHz STR and 80MHz DTR operation. It features 128KB uniform block erase, on-chip 1-bit ECC, and dual read modes (Buffer Read and Continuous Read). The device is configured in TFBGA-24 (8×6 mm, 5×5-1 ball array) and targets embedded code storage and firmware update applications requiring high-density non-volatile memory in space-constrained designs.

For engineers reviewing the W25N02JWTBIC TR datasheet, W25N02JWTBIC TR pinout, W25N02JWTBIC TR application, or W25N02JWTBIC TR equivalent, key selection criteria include its 2G-bit capacity, TFBGA-24 package compatibility, DTR-enabled 80MB/s continuous transfer rate, and configurable BUF mode for optimized sequential access in boot code shadowing or OTA firmware storage systems.

Technical Context

The W25N02JWTBIC TR implements a standard SPI-compatible command set extended with Dual/Quad I/O and DTR protocols, enabling address and data transfers on both clock edges. Its internal architecture includes a 2,048-byte page buffer, 1,024 erasable blocks (128KB each), and dedicated registers for ECC control (ECC-E), read mode selection (BUF), and quad enable (QE).

It supports two distinct read execution modes: Buffer Read (default at power-up for G-suffix parts) and Continuous Read (T-suffix default), differing only in command structure-not timing or functionality-while sharing identical program/erase instructions, status register layout, and protection mechanisms including volatile/OTP-lockable BP bits and SRP bits.

Key Specifications

Pinout & Package

W25N02JWTBIC TR is packaged in a 24-ball TFBGA (8×6 mm, 5×5-1 ball array, package code TB), with balls arranged in a staggered grid excluding the center pad. The package supports automated optical inspection and offers thermal performance suitable for high-density PCB layouts.

Key Features

Applications

Equivalent & Alternatives

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

Compared with W25N01JWTBIC TR, the W25N02JWTBIC TR doubles capacity while retaining identical package, pinout, and instruction compatibility-enabling seamless upgrade without layout change. Versus MT29F2G08ABAEAH4-IT:E, it eliminates parallel bus complexity and offloads ECC, simplifying controller firmware and reducing BOM count.

Availability

W25N02JWTBIC TR is available at Aetrix Electronics and suitable for industrial HMI firmware storage, automotive telematics OTA updates, and medical diagnostic device logs requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for W25N02JWTBIC 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 NOR/NAND Flash, SRAM, and mobile DRAM, serving industrial, automotive, and consumer markets since 1987.

The W25N SpiFlash family was designed to bring NAND density and cost efficiency to SPI-based microcontroller platforms-eliminating the need for complex NAND controllers while maintaining robustness, security, and ease of integration in resource-constrained systems.

FAQ

What is the default read mode for W25N02JWTBIC TR at power-up?

The W25N02JWTBIC TR defaults to Buffer Read Mode (BUF=1) at power-up, consistent with the 'G' suffix designation in the Winbond part numbering scheme. This mode requires explicit Page Data Read commands between sequential page accesses. To enable Continuous Read Mode, the Configuration Register (Status Register-2) must be written with BUF bit = 0 using instruction 1Fh.

Does W25N02JWTBIC TR support Quad SPI operation out-of-the-box?

No-W25N02JWTBIC TR requires Quad Enable (QE) bit = 1 in Status Register-2 to activate Quad I/O mode. By default, QE is cleared (0), limiting operation to standard or Dual SPI. Setting QE via Write Status Register instruction (1Fh) configures IO2 and IO3 as active data lines, enabling 4-bit-wide transfers on CLK edges.

How is bad block management handled in W25N02JWTBIC TR?

W25N02JWTBIC TR implements hardware-assisted Bad Block Management using a Look-Up Table (LUT) stored in a reserved parameter area. The A1h instruction marks blocks as invalid, and A5h reads the full LUT. The device does not auto-remap blocks; instead, the host controller uses LUT contents to skip invalid physical blocks during logical-to-physical address translation.

Can the ten OTP pages in W25N02JWTBIC TR be erased or rewritten?

No-the ten 2,048-byte OTP pages in W25N02JWTBIC TR are one-time programmable and cannot be erased or modified after initial programming. Once written, their contents are permanent. Programming is enabled only after setting the Enter OTP Access Mode bit (OTP-E) and verifying OTP-L lock status; subsequent writes to programmed pages return status error.

What is the function of the /RESET pin on W25N02JWTBIC TR?

W25N02JWTBIC TR's /RESET pin provides asynchronous hardware reset: pulling it low forces the device into a known initial state, clearing internal registers, aborting ongoing operations, and reloading default configuration values-including BUF=1 and QE=0. Release from low restores normal operation without requiring power cycle or software reset instruction (FFh/99h).