Winbond Electronics Corporation W25Q01NWZEIM TR

Overview

W25Q01NWZEIM TR from Winbond is a 1G-bit (two 512M-bit stacked die) serial flash memory IC supporting Dual/Quad SPI, 1.7–1.95V single-supply operation, 133MHz max clock, and 4KB uniform sector erase. It enables XIP (execute-in-place) code execution, data logging, and firmware storage in space-constrained embedded systems including IoT edge nodes and industrial controllers.

For engineers reviewing the W25Q01NWZEIM TR datasheet, W25Q01NWZEIM TR pinout, W25Q01NWZEIM TR application, or W25Q01NWZEIM TR equivalent, key selection considerations include its WSON-8 (ZE) package with /HOLD pin repurposed as /RESET in IM ordering, 66 MB/s Quad I/O throughput, dual-die linear addressing, and hardware write protection via /WP and status register bits.

Technical Context

The W25Q01NWZEIM TR implements a dual-die stacked architecture with independent 64-bit unique IDs and status registers per die, enabling seamless 1G-bit linear addressing without external address translation. Its SPI interface supports Mode 0 and Mode 3, with Quad I/O requiring non-volatile QE bit (Status Register-2) configuration.

It integrates three 256-byte security registers with OTP locks, SFDP v1.6 compliance for discoverable parameters, and concurrent command support across both dies for accelerated bulk operations. Erase/program suspend/resume functionality allows real-time interruption of background operations without data loss.

Key Specifications

Pinout & Package

W25Q01NWZEIM TR uses an 8-pad WSON 8×6-mm package (JEDEC MO-252, package code ZE), with /HOLD pin functioning as /RESET in IM-ordering variants per datasheet Section 3.2 and Figure 1a.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MX25L1G45GMIL0 and S25FL132K0XMFI010, the W25Q01NWZEIM TR uniquely delivers 1G-bit density in a 1.8V WSON-8 package with integrated hardware /RESET, dual-die linear addressing, and production-ready Quad SPI throughput - making it optimal for next-generation edge AI and industrial control platforms.

Availability

W25Q01NWZEIM TR is available at Aetrix Electronics and suitable for industrial automation, medical diagnostics, and automotive ADAS applications requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for W25Q01NWZEIM 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.

The W25Q series targets high-performance embedded systems requiring reliable, low-voltage serial flash with advanced features like XIP, security registers, and multi-die scaling - specifically engineered for code storage and execution in resource-constrained environments.

FAQ

What is the package type and pin count of the W25Q01NWZEIM TR?

The W25Q01NWZEIM TR uses an 8-pad WSON 8×6-mm package (JEDEC MO-252, package code ZE). It has eight terminals: /CS, DO (IO1), /WP (IO2), GND, DI (IO0), CLK, /HOLD or /RESET (IO3), and VCC. Per datasheet Section 3.1–3.2 and Figure 1a, this variant implements /RESET functionality on pin 7 in IM ordering, distinguishing it from IQ variants where that pin serves as IO3.

Does the W25Q01NWZEIM TR support Quad SPI operation, and what is required to enable it?

Yes, the W25Q01NWZEIM TR supports Quad SPI operation. To enable it, the non-volatile Quad Enable (QE) bit in Status Register-2 must be set to '1'. When QE=1, the /WP pin becomes IO2 and the /HOLD or /RESET pin becomes IO3. This configuration is mandatory for instructions like Fast Read Quad I/O (EBh) and requires proper initialization during system boot per datasheet Sections 4.2 and 7.1.9.

What is the significance of the "dual die" architecture in the W25Q01NWZEIM TR?

The W25Q01NWZEIM TR integrates two independent 512M-bit dies in a single package, enabling seamless 1G-bit linear addressing without external address decoding. Each die has its own 64-bit Unique ID and independent status bits (BUSY, SUS), allowing concurrent operations and robust error isolation. This architecture improves yield, reduces PCB footprint versus discrete chips, and supports faster bulk reads via die interleaving - confirmed in General Descriptions Section 1 and Block Diagram Figure 2.

How does hardware write protection work on the W25Q01NWZEIM TR?

Hardware write protection on the W25Q01NWZEIM TR combines the active-low /WP pin with volatile/non-volatile status register bits (BP0–BP3, TB, CMP, SRP). When /WP is held low, writes to the status register are blocked regardless of software commands. This physical lock prevents accidental or malicious modification of sector/block protection settings - critical for safeguarding boot code and calibration data, as detailed in Sections 4.3 and 7.1.3–7.1.6.

Is the /RESET pin on the W25Q01NWZEIM TR dedicated, and how does it differ from software reset?

Yes, the W25Q01NWZEIM TR includes a dedicated hardware /RESET pin (pin 7 in WSON-8 IM ordering), which forces immediate termination of all internal operations and returns the device to its power-on state when pulsed low for ≥1 µs. Unlike software reset (66h + 99h), hardware /RESET operates independently of clock, instruction state, or register configuration - ensuring recovery from latch-up or power anomaly scenarios, as specified in Section 4.6 and Figure 1a.