Winbond Electronics Corporation W25Q01NWTBIM

Overview

W25Q01NWTBIM from Winbond is a 1G-bit (two-die 512M-bit × 2) serial NOR flash memory supporting Dual/Quad SPI, 1.7–1.95V operation, 133MHz clock rate, and 4KB uniform sector erase. It delivers 66MB/s continuous read throughput in Quad I/O mode and supports execute-in-place (XIP) for code storage in space-constrained embedded systems.

For engineers reviewing the W25Q01NWTBIM datasheet, W25Q01NWTBIM pinout, W25Q01NWTBIM application, or W25Q01NWTBIM equivalent, this page provides verified package mapping (TFBGA 24-ball, Package Code TB), confirmed pin functions including /RESET, validated 4-byte addressing support, JEDEC ID compliance, and real-world XIP and firmware update use cases.

Technical Context

The W25Q01NWTBIM implements a dual-die stacked architecture with independent 64-bit unique IDs per die and separate BUSY/SUS status bits, enabling concurrent die management. It supports three address modes (3-byte default, 4-byte enabled via B7h/E9h, and power-up ADP bit control), with Quad SPI requiring non-volatile QE bit setting in Status Register-2.

Its SPI interface operates in Mode 0 or Mode 3, supports hardware reset via dedicated /RESET pin (available in TFBGA/SOIC packages), and includes volatile/non-volatile status register protection (SRP/SRL), individual sector lock (36h/39h), and three 256-byte OTP-locked security registers - all accessible via documented instruction set including 4B-address variants (e.g., 12h, 13h, 21h, 34h).

Key Specifications

Pinout & Package

W25Q01NWTBIM uses the 24-ball TFBGA 8×6-mm package (Package Code TB) with 5×5 ball array. Pin functions are defined per ball position per official Winbond documentation.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar serial NOR flash memory applications.

Compared with MX25L1G45GM and S25FL132K0XMFI010, the W25Q01NWTBIM uniquely combines 1G-bit density, 1.8V operation, hardware /RESET in TFBGA, and native 4-byte addressing - making it the only option among the three that supports full linear access and fail-safe recovery in modern low-voltage embedded designs.

Availability

W25Q01NWTBIM is available at Aetrix Electronics and suitable for industrial PLC firmware storage, automotive ADAS boot memory, and medical imaging device configuration requiring stable component supply across multi-year production cycles.

Supply support for W25Q01NWTBIM 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 DRAM, mobile DRAM, and serial flash memory solutions for embedded, communications, and consumer markets.

The W25Q series targets high-performance, low-voltage serial NOR flash applications demanding XIP, secure boot, and robust firmware update capabilities - with W25Q01NWTBIM extending that line to 1G-bit density in compact TFBGA packaging.

FAQ

What is the package type and pin count of W25Q01NWTBIM?

W25Q01NWTBIM uses a 24-ball TFBGA 8×6-mm package (Package Code TB) with a 5×5 ball array. Key pins include /RESET (A4), CLK (B2), VCC (B4), GND (B3), /CS (C2), and Quad I/O lines IO0–IO3 mapped to DI, DO, /WP, and /HOLD respectively. This package is explicitly listed in the Winbond datasheet Section 3.5 and 8.5.

Does W25Q01NWTBIM support hardware reset, and how is it implemented?

Yes, W25Q01NWTBIM supports hardware reset via a dedicated /RESET pin located at ball A4 in its TFBGA package. Driving this pin low for ≥1 µs forces the device to terminate all operations and return to its power-on state - independent of SPI activity or internal status. This functionality is confirmed in Section 4.6 and Figure 1c of the official datasheet.

How does W25Q01NWTBIM handle 1G-bit addressing, and is 4-byte mode required?

W25Q01NWTBIM requires 4-byte addressing mode to access its full 1G-bit capacity. While it powers up in 3-byte mode by default, the ADP bit in Status Register-1 determines power-up address mode, and the B7h instruction enables 4-byte mode dynamically. Linear addressing across both dies is only possible in 4-byte mode - confirmed in Sections 6.1.4 and 7.4.6–7.4.7 of the datasheet.

What security features does W25Q01NWTBIM provide for firmware protection?

W25Q01NWTBIM provides multiple firmware protection layers: hardware /WP pin + non-volatile BP/TB/CMP bits for sector-level write protection; individual sector lock/unlock (36h/39h); three 256-byte OTP-locked security registers (LB1–LB3); and SFDP v1.6 for standardized parameter discovery. These are documented in Sections 2, 7.1, and 7.4.41–7.4.48 of the datasheet.

Can W25Q01NWTBIM be used for execute-in-place (XIP) applications, and what performance can be expected?

Yes, W25Q01NWTBIM supports true XIP via Quad SPI Fast Read Quad I/O (EBh) with up to 66 MB/s continuous data transfer rate at 133 MHz clock. Its 4KB uniform sector architecture and erase/program suspend (75h/7Ah) enable deterministic code execution during background updates - as specified in Sections 1, 2, and 7.4.18 of the datasheet.