Winbond Electronics Corporation W25Q01NWSFIM TR

Overview

W25Q01NWSFIM TR from Winbond is a 1.8V, 1G-bit (dual-die) serial flash memory supporting Dual/Quad SPI interfaces, organized into 524,288 × 256-byte pages with uniform 4KB sector erase granularity, and rated for ≥100,000 program-erase cycles and >20-year data retention - deployed in embedded boot code storage, firmware update partitions, and XIP-capable microcontroller systems.

For engineers reviewing the W25Q01NWSFIM TR datasheet, W25Q01NWSFIM TR pinout, W25Q01NWSFIM TR application, or W25Q01NWSFIM TR equivalent, this page delivers verified package mapping (SOIC-16 SF), confirmed Quad SPI timing (133MHz CLK, 532MHz equiv.), hardware reset support, JEDEC ID/SFDP compliance, and real-world security register usage - all validated against Winbond's official Rev B datasheet.

Technical Context

The W25Q01NWSFIM TR implements a dual-die stack architecture enabling linear 1G-bit addressing across two independent 512M-bit arrays, each with dedicated BUSY/SUS status bits and a unique 64-bit serial number. Its SPI controller supports Mode 0 and Mode 3, with Quad I/O requiring non-volatile QE bit (SR2) configuration.

It integrates three 256-byte one-time-programmable (OTP) security registers, volatile/non-volatile status register bits (BP0–BP3, TB, CMP, SRP), and hardware write protection via /WP and /HOLD pins - with /RESET available only on SOIC-16 and TFBGA packages per pinout documentation.

Key Specifications

Pinout & Package

W25Q01NWSFIM TR uses the 16-pin SOIC 300-mil package (Package Code SF), featuring dedicated /RESET and /HOLD pins, with NC/DNU pins explicitly defined per datasheet Figure 1b and Table 3.4.

Key Features

Applications

Equivalent & Alternatives

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

Compared with W25Q01NWSFIM TR, MX25L1G45GMI-08G lacks hardware reset and OTP security, limiting use in safety-critical or secure boot contexts; IS25LP1G-SO16 adds octal readiness but omits OTP - making W25Q01NWSFIM TR uniquely balanced for industrial firmware storage with integrated security and deterministic reset.

Availability

W25Q01NWSFIM TR is available at Aetrix Electronics and suitable for industrial HMI boot storage, medical device firmware partitioning, automotive ADAS camera modules, smart energy meter firmware updates, and secure IoT edge node applications requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for W25Q01NWSFIM 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, mobile DRAM, and serial flash memory solutions for embedded, industrial, and communications markets.

The W25Q series targets high-performance, low-voltage serial flash applications - designed specifically for code execution (XIP), firmware storage, and secure parameter retention in resource-constrained systems.

FAQ

Does W25Q01NWSFIM TR support hardware reset, and which packages include the /RESET pin?

Yes, W25Q01NWSFIM TR supports hardware reset via the dedicated /RESET pin, which forces immediate return to power-on state upon ≥1 µs low pulse. This pin is physically present only on SOIC-16 (Package Code SF) and TFBGA (Package Code TB) variants - it is absent in WSON-8 (ZE) packages. The /RESET function operates independently of software state or QE bit configuration.

What is the maximum supported SPI clock frequency for W25Q01NWSFIM TR in Quad I/O mode?

W25Q01NWSFIM TR supports up to 133 MHz SPI clock frequency in Quad I/O mode, delivering an effective data rate of 532 MHz (133 MHz × 4 lines). This is validated under standard operating conditions (1.7–1.95 V, −40°C to +85°C) and requires the Quad Enable (QE) bit in Status Register-2 to be set to '1' and proper signal integrity layout per Winbond's AC Electrical Characteristics table.

How does the dual-die architecture of W25Q01NWSFIM TR affect addressing and status reporting?

W25Q01NWSFIM TR integrates two independent 512M-bit dies in a single package, providing linear 1G-bit addressing. Each die maintains separate BUSY and SUS status bits, allowing concurrent operations (e.g., erase on one die while reading from the other) and independent monitoring. The device reports a unified JEDEC ID and SFDP, but status register reads reflect per-die states - critical for managing overlapping operations in real-time systems.

Can W25Q01NWSFIM TR be used for secure key storage, and what hardware features enable this?

Yes, W25Q01NWSFIM TR supports secure key storage using three dedicated 256-byte one-time-programmable (OTP) security registers. These registers can be individually locked via OTP bits, preventing further writes after programming. Combined with hardware write protection (/WP pin), individual sector lock (36h), and status register protection (SRP), they provide layered defense for cryptographic keys, device IDs, or calibration secrets - all verified in Winbond's Rev B datasheet Section 7.1.8 and 7.4.41–7.4.43.

Is W25Q01NWSFIM TR compatible with 3-byte and 4-byte address modes, and how is the default mode selected?

Yes, W25Q01NWSFIM TR supports both 3-byte and 4-byte address modes. The Power-Up Address Mode (ADP) bit in Status Register-2 determines the default at power-on: ADP = 0 selects 3-byte mode; ADP = 1 selects 4-byte mode. The mode cannot be changed dynamically during operation - switching requires issuing Enter 4-Byte Address Mode (B7h) or Exit 4-Byte Address Mode (E9h) commands, and the ADP bit must be written non-volatily to persist across power cycles.