Winbond Electronics Corporation W25Q256FVFIP TR

Overview

W25Q256FVFIP TR from Winbond is a 256M-bit (32MB) serial NOR flash memory supporting Standard/Dual/Quad SPI and QPI interfaces, organized into 131,072 × 256-byte pages with 4KB uniform sector erase granularity. It operates from 2.7V to 3.6V, draws 4mA active current and <1µA in power-down mode, and delivers up to 104MHz SPI clock speed (416MHz equivalent Quad I/O throughput). It is used for code storage, XIP execution, firmware updates, and parameter retention in embedded microcontrollers and SoC boot loaders.

For engineers reviewing the W25Q256FVFIP TR datasheet, W25Q256FVFIP TR pinout, W25Q256FVFIP TR application, or W25Q256FVFIP TR equivalent, key selection criteria include 4-byte addressing support, QE bit configuration for Quad I/O, /HOLD or /RESET pin multiplexing on IO3, and JEDEC SFDP register compatibility for auto-configuration.

Technical Context

The W25Q256FVFIP TR implements a flexible SPI command architecture with three address modes (3-byte, 4-byte, and ADP-configurable power-up default), enabling seamless transition from legacy 16MB designs to 32MB capacity without software rework. Its status register includes volatile/non-volatile BP3–BP0, TB, CMP, SRP0/SRP1, and QE bits - with QE=1 required to enable Quad I/O and repurpose /WP and /HOLD as IO2/IO3.

It supports hardware write protection via /WP pin (active-low, disabled in Quad mode), /HOLD pin for transaction suspension (disabled in Quad mode), and software-controlled security features including three 256-byte OTP-locked security registers, 64-bit unique ID, and programmable output driver strength (DRV1/DRV0). Erase/program suspend-resume capability enables concurrent background operations.

Key Specifications

Pinout & Package

W25Q256FVFIP TR is supplied in an 8-pad WSON 8×6 mm package (JEDEC MO-252, package code E), with exposed thermal pad. Pin 1 is /CS, pin 2 is DO (IO1), pin 3 is /WP (IO2), pin 4 is GND, pin 5 is DI (IO0), pin 6 is CLK, pin 7 is /HOLD or /RESET (IO3), and pin 8 is VCC. IO0–IO3 are bidirectional in Dual/Quad modes; /WP and /HOLD functions are disabled when QE=1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MX25L25635FMI-10G and S25FL256SAGMFV001, the W25Q256FVFIP TR delivers superior throughput via QPI and Quad I/O, enables robust field updates via suspend/resume, and provides stronger security with OTP-locked registers and factory-unique ID - making it optimal for next-generation connected and safety-aware embedded systems.

Availability

W25Q256FVFIP TR is available at Aetrix Electronics and suitable for boot code storage, firmware over-the-air (FOTA) updates, and parameter retention requiring stable component supply, long-term lifecycle assurance, and traceable sourcing for industrial and automotive-grade programs.

Supply support for W25Q256FVFIP 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 DRAM, mobile DRAM, and serial flash memory solutions since 1987.

The W25Q series targets high-performance embedded systems requiring fast, secure, and space-efficient code and data storage - optimized for MCU boot, XIP execution, and firmware update resilience.

FAQ

What is the package type and footprint of the W25Q256FVFIP TR?

The W25Q256FVFIP TR uses an 8-pad WSON 8×6 mm package (JEDEC MO-252, package code E) with exposed thermal pad. It has standard 0.5 mm pitch, 2.1 mm × 1.9 mm pad dimensions, and requires solder mask defined pads per Winbond's recommended layout guidelines. This compact footprint supports high-density PCB designs in space-constrained applications such as wearables and edge AI modules.

Does the W25Q256FVFIP TR support 4-byte addressing, and how is it enabled?

Yes, the W25Q256FVFIP TR supports both 3-byte and 4-byte addressing modes. 4-byte mode is entered using the Enter 4-Byte Address Mode instruction (B7h) and exited with Exit 4-Byte Address Mode (E9h). The ADP bit in Status Register-3 determines the default power-up address mode; it is non-volatile and configurable via Write Status Register-3 (11h).

How does the Quad Enable (QE) bit affect pin functionality on the W25Q256FVFIP TR?

The QE bit (bit 1 of Status Register-2) must be set to '1' to enable Quad I/O mode. When QE=1, pins /WP (IO2) and /HOLD (IO3) become functional as bidirectional I/O lines IO2 and IO3 - disabling their hardware protection and hold functions. This configuration is non-volatile and persists across power cycles unless explicitly cleared.

Can the W25Q256FVFIP TR be used for execute-in-place (XIP) operation, and what conditions are required?

Yes, the W25Q256FVFIP TR supports true XIP via its Continuous Read Mode with wrap lengths (8/16/32/64 bytes) and QPI interface. To enable XIP, the host must configure Quad I/O mode (QE=1), use Fast Read Quad I/O (6Bh/6Ch) or QPI Read commands, and ensure stable 104MHz clock timing. The low instruction overhead (as few as 8 clocks to address memory) minimizes latency during instruction fetch.

What security features are implemented in the W25Q256FVFIP TR beyond basic write protection?

Beyond /WP pin and status register BP bits, the W25Q256FVFIP TR includes three 256-byte OTP-lockable security registers (LB1–LB3), a factory-programmed 64-bit unique ID, JEDEC SFDP register for standardized parameter discovery, and programmable output driver strength (DRV1/DRV0) to mitigate side-channel timing attacks. These features collectively support secure boot, firmware authentication, and tamper-resistant calibration storage.