Winbond Electronics Corporation W25N02JWTBIF TR

Overview

W25N02JWTBIF 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 read modes, 128KB uniform block erase, and on-chip 1-bit ECC. It delivers 80MB/s continuous data transfer in Continuous Read Mode and targets embedded storage in space-constrained industrial controllers and IoT edge nodes requiring reliable non-volatile code/data storage.

For engineers reviewing the W25N02JWTBIF TR datasheet, W25N02JWTBIF TR pinout, W25N02JWTBIF TR application, or W25N02JWTBIF TR equivalent, key selection criteria include 2G-bit density, TFBGA-24 (8×6 mm) package compatibility, 1.7–1.95V supply operation, BUF-mode default configuration, and support for DTR Fast Read Quad I/O instructions.

Technical Context

The W25N02JWTBIF TR implements a page-based SLC NAND architecture organized into 131,072 × 2,048-byte pages across 2,048 erasable 128KB blocks. It uses standard SPI command sets extended with Dual/Quad I/O and DTR variants, enabling high-throughput sequential access via Continuous Read Mode (BUF=0) or buffered random access (BUF=1).

Internal ECC correction operates per page with status reporting via Status Register-3 (ECC-1/ECC-0 bits), while Bad Block Management relies on a dedicated Look-Up Table accessible via A5h instruction. Write protection is enforced through volatile BP bits, OTP-lockable SRP bits, and hardware /WP and /HOLD pins.

Key Specifications

Pinout & Package

W25N02JWTBIF TR is packaged in a 24-ball TFBGA (8×6 mm, 5×5-1 ball array, package code TB), optimized for high-density PCB layouts with fine-pitch routing and thermal performance suitable for industrial ambient conditions.

Key Features

Applications

Equivalent & Alternatives

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

Compared with W25N01JWTBIF TR, the W25N02JWTBIF TR doubles capacity without changing footprint or interface behavior; versus MT29F2G08ABAEAH4-IT:E TR, it eliminates external ECC dependency and enables faster sequential access via integrated features.

Availability

W25N02JWTBIF TR is available at Aetrix Electronics and suitable for industrial automation, medical diagnostics, smart metering, and automotive telematics requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.

Supply support for W25N02JWTBIF 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 memory solutions including SPI NOR/NAND flash, RAM, and trusted computing ICs since 1987.

The W25N SpiFlash family was designed to bring NAND density and cost-efficiency to SPI-based embedded systems, bridging the gap between traditional serial flash and parallel NAND in resource-constrained applications.

FAQ

What is the default BUF mode setting for W25N02JWTBIF TR at power-up?

The W25N02JWTBIF TR uses the 'T' suffix, indicating Buffer Read Mode (BUF=1) is disabled by default at power-up - Continuous Read Mode (BUF=0) is active. This is confirmed in Winbond's datasheet revision C, Section 2 Features note 1, and enables immediate linear memory access without issuing additional mode-setting commands. The BUF bit resides in Configuration Register (Status Register-2, bit 5) and can be modified via Write Status Register instruction (1Fh).

Does W25N02JWTBIF TR support DTR (Double Transfer Rate) operation, and what is its maximum clock frequency?

Yes, W25N02JWTBIF TR supports DTR operation with a maximum clock frequency of 80MHz, as specified in the General Descriptions section and Features table of the datasheet. In DTR mode, addresses and read data are sampled on both rising and falling edges of CLK, effectively doubling data rate per clock cycle. This applies to all DTR-capable instructions including DTR Fast Read (0Dh), DTR Fast Read Quad I/O (EDh), and related 4-byte address variants.

How many OTP pages does W25N02JWTBIF TR provide, and what is their size and programming restriction?

W25N02JWTBIF TR provides ten 2,048-byte OTP (One-Time-Programmable) pages, as stated in Section 2 Features and Section 8.2.37 of the datasheet. These pages are located in the parameter/OTP area and can only be programmed once - subsequent write attempts to an already-programmed OTP page will fail silently or return status indicating write protection. Programming requires entering OTP Access Mode (OTP-E=1) and using standard Program Execute (10h) with appropriate address targeting.

What package type and dimensions does W25N02JWTBIF TR use, and how is it marked?

W25N02JWTBIF TR uses the 24-ball TFBGA package (8×6 mm, 5×5-1 ball array), identified by package code TB per Section 11.3 and Figure 3-3 of the datasheet. Top-side marking follows Winbond's standard format: "W25N02J" followed by date code and traceability symbols; the "TBIF" in the part number explicitly denotes this TFBGA configuration, and "TR" indicates tape-and-reel packaging.

Is hardware reset (/RESET) required for reliable initialization of W25N02JWTBIF TR, and what happens if omitted?

Yes, hardware reset via the /RESET pin is required for reliable initialization of W25N02JWTBIF TR. As described in Section 6.1.7 and Figure 8-1/8-2, /RESET performs asynchronous internal register reset and state machine reinitialization. If omitted, the device may retain undefined register states from prior power cycles, leading to inconsistent BUF mode behavior, incorrect status register values, or failure to respond to SPI commands - especially after brownout or unclean power-down events.