Winbond Electronics Corporation W25N02KVTBIR TR

Overview

W25N02KVTBIR TR from Winbond is a 2G-bit (256MB) SLC QspiNAND Flash memory IC supporting Dual/Quad SPI interfaces, 104MHz clock rate, on-chip 8-bit ECC, and 128KB uniform block erase. It operates from 2.7V–3.6V, draws 25mA active current, and targets embedded code storage and data logging in space-constrained industrial controllers.

For engineers reviewing the W25N02KVTBIR TR datasheet, W25N02KVTBIR TR pinout, W25N02KVTBIR TR application, or W25N02KVTBIR TR equivalent, key selection considerations include its TFBGA-24 (8×6mm, 5×5 ball array) package, buffer/sequential read modes, hardware/software write protection, and JEDEC-compliant ID support for system-level firmware validation.

Technical Context

The W25N02KVTBIR TR implements a QspiNAND architecture with unified 2,048-byte pages across 131,072 pages and 2,048 erasable 128KB blocks. Its dual-mode read interface supports both Buffer Read (BUF=1) and Sequential Read (BUF=0), enabling single-command full-array access without address reissuing.

It integrates configurable registers including Protection Register (SR-1), Configuration Register (SR-2), and Status Register-3, with volatile and OTP-lockable bits for BP[3:0], WP-E, ECC-E, BUF, and H-DIS. Internal ECC operates at 8-bit correction per 512-byte sector and reports bit-flip status via BFD/BFS/BFR registers.

Key Specifications

Pinout & Package

W25N02KVTBIR TR uses a 24-ball TFBGA 8×6-mm package (Package Code TB, 5×5 ball array) with 0.8mm ball pitch. Pin assignments follow JEDEC MO-276AA standard.

Key Features

Applications

Equivalent & Alternatives

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

Compared with W25N02KVTBIR TR, W25N02KVTCIR TR offers identical functionality in an alternate TFBGA layout, while MT29F2G08ABAEAH4-IT:E TR demands additional controller logic and external ECC management-making W25N02KVTBIR TR the optimal choice for SPI-native, space-constrained designs needing integrated reliability features.

Availability

W25N02KVTBIR TR is available at Aetrix Electronics and suitable for industrial PLC firmware storage, medical device data logging, smart meter tariff table retention, and automotive infotainment boot memory requiring stable component supply across multi-year production cycles.

Supply support for W25N02KVTBIR 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 manufacturer specializing in specialty DRAM, Flash memory, and mobile chips, with global R&D and manufacturing facilities.

The W25N QspiNAND product line was designed to replace parallel NAND in SPI-constrained systems, delivering NAND density with SPI simplicity, integrated ECC, and industrial temperature support for embedded code and data storage.

FAQ

What is the package type and pin count of the W25N02KVTBIR TR?

The W25N02KVTBIR TR uses a 24-ball TFBGA package measuring 8mm × 6mm with a 5×5 ball array (Package Code TB). It has eight functional terminals: /CS, CLK, DI (IO0), DO (IO1), /WP (IO2), /HOLD (IO3), VCC, and GND - all defined in the official Winbond datasheet Revision G, Section 3.3 and Figure 1b.

Does the W25N02KVTBIR TR support Quad SPI commands and what is the maximum clock frequency?

Yes, the W25N02KVTBIR TR fully supports Quad SPI operation using IO0–IO3 pins and achieves up to 104MHz clock frequency. When using Fast Read Quad I/O instructions, this yields an effective data rate of 416MHz (104MHz × 4), enabling 50MB/s sequential read throughput as verified in Section 2 and Table 9.6 of the datasheet.

How does the on-chip ECC work in the W25N02KVTBIR TR and can it be disabled?

The W25N02KVTBIR TR includes an 8-bit ECC engine that corrects errors per 512-byte sector. Its operation is controlled by the ECC-E bit (bit 4) in Status Register-2 (SR-2); setting ECC-E=0 disables ECC, while ECC-E=1 enables it. ECC status is reported via ECC-1/ECC-0 bits in SR-3 and detailed bit-flip counters in BFR/MBF registers.

What is the difference between Buffer Read and Sequential Read modes in the W25N02KVTBIR TR?

Buffer Read mode (BUF=1) loads one 2,048-byte page into the internal buffer for random access reads; Sequential Read mode (BUF=0) allows continuous read across multiple pages with a single READ command and auto-incrementing address. The mode is selected via the BUF bit (bit 0) in SR-2 and affects instruction behavior per Tables 8.1.1–8.1.2.

Is the W25N02KVTBIR TR compatible with standard SPI flash controllers or does it require special drivers?

The W25N02KVTBIR TR supports standard SPI commands (e.g., 03h Read Data, 06h Write Enable) but requires driver-level support for QspiNAND-specific features: 128KB block erase (D8h), parameter page access (OTP-E=1), and ECC status interpretation. It is not drop-in compatible with legacy SPI NOR flash without firmware adaptation.