Winbond Electronics Corporation W25N02JWTBIC

Overview

W25N02JWTBIC from Winbond is a 1.8V serial SLC NAND flash memory IC with 2G-bit (256MB) capacity, organized as 131,072 pages × 2,048 bytes, supporting Dual/Quad SPI and DTR read modes up to 166MHz STR / 80MHz DTR, and featuring on-chip 1-bit ECC, continuous read mode, and 128KB uniform block erase - deployed in embedded boot code storage and firmware update applications.

For engineers reviewing the W25N02JWTBIC datasheet, W25N02JWTBIC pinout, W25N02JWTBIC application, or W25N02JWTBIC equivalent, key selection criteria include its TFBGA-24 (8×6 mm, package code TB) footprint, 1.7–1.95V supply range, 100,000 program/erase cycles, -40°C to +105°C operation, and support for JEDEC ID, OTP pages, and Bad Block Management via LUT access.

Technical Context

The W25N02JWTBIC implements a true NAND architecture with page-based programming (2,048-byte internal buffer), 128KB block erasure (1,024 blocks total), and integrated ECC logic that detects and corrects single-bit errors per 528-byte sector. It uses standard SPI command sets extended with Dual/Quad I/O and DTR variants for high-throughput data streaming.

Its dual operational read modes - Buffer Read (default on W25N02JWTBIC's G-suffix variant) and Continuous Read - enable flexible memory access: the former requires explicit Page Data Read commands per page, while the latter allows seamless sequential reads across address boundaries without reissuing commands.

Key Specifications

Pinout & Package

W25N02JWTBIC is packaged in a 24-ball TFBGA (8×6 mm, package code TB) with 0.5 mm pitch, optimized for high-density PCB layouts and thermal performance in compact modules.

Key Features

Applications

Equivalent & Alternatives

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

Compared with W25N01JWTBIC, the W25N02JWTBIC doubles capacity while retaining pinout, voltage, and feature set - enabling seamless upgrade paths; versus MT29F2G08ABAEAH4-IT:E, it integrates ECC, BBM, and DTR to reduce host processing load and PCB component count.

Availability

W25N02JWTBIC is available at Aetrix Electronics and suitable for automotive infotainment, industrial PLC firmware, and medical imaging device parameter storage requiring stable component supply, long lifecycle support, and guaranteed traceability.

Supply support for W25N02JWTBIC 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 SPI NOR/NAND, RAM, and voice ICs, with ISO/TS 16949 and ISO 14001 certifications.

The W25N SpiFlash family targets embedded systems needing high-density, low-pin-count non-volatile storage - designed specifically to replace parallel NAND and legacy SPI NOR in boot code, firmware, and configuration storage applications.

FAQ

What is the default BUF mode setting for W25N02JWTBIC after power-up?

The W25N02JWTBIC defaults to Buffer Read Mode (BUF=1) after power-up, as indicated by its 'G' suffix in the part numbering convention (W25N02JWxxxG). This mode requires explicit Page Data Read (13h) commands to fetch each 2,048-byte page. The BUF bit resides in Status Register-2 (address Bxh) and can be changed dynamically via Write Status Register (1Fh) instruction.

Does W25N02JWTBIC support 4-byte addressing, and how is it enabled?

Yes, W25N02JWTBIC supports 4-byte addressing for accessing its full 2G-bit address space, using dedicated instructions like Fast Read with 4-Byte Address (0Ch) and DTR Fast Read with 4-Byte Address (0Eh). Entry into 4-byte mode is controlled by the 4BYTEEN bit in Status Register-2 and requires issuing the Enable 4-byte Address Mode (B7h) command before use.

How does the on-chip ECC in W25N02JWTBIC operate, and where are ECC status flags reported?

The W25N02JWTBIC implements hardware-based 1-bit ECC per 528-byte sector, automatically applied during read operations. ECC status is reported in Status Register-3 (Cxh) via ECC-1/ECC-0 bits: '00' = no error, '01' = corrected single-bit error, '10' = uncorrectable multi-bit error. This eliminates need for host-side ECC computation while providing immediate error detection feedback.

What package type and footprint does W25N02JWTBIC use, and are there alternative packages?

W25N02JWTBIC uses the 24-ball TFBGA package (8×6 mm, 0.5 mm pitch, package code TB), shown in Figure 3-3 and detailed in Section 11.3 of the datasheet. Alternative packages include 8-pad WSON 8x6-mm (ZE) and 16-pin SOIC-300mil (SF), but W25N02JWTBIC is specifically marked and qualified for the TB variant.

Can W25N02JWTBIC be used as a direct replacement for W25N01JWxxxTBIC in an existing design?

W25N02JWTBIC shares identical pinout, voltage range, timing specifications, instruction set, and TFBGA-24 package with W25N01JWxxxTBIC, making it a functional and layout-compatible upgrade. No PCB changes are required; however, firmware must validate address space expansion (131,072 vs. 65,536 pages) and confirm BUF mode behavior aligns with application needs.