Winbond Electronics Corporation W25Q257FVEIF TR

Overview

W25Q257FVEIF TR from Winbond is a 256M-bit (32MB) serial NOR flash memory IC supporting Standard/Dual/Quad SPI and QPI interfaces, operating at up to 104 MHz clock frequency with 50 MB/s continuous read throughput, 4KB uniform sector erase granularity, and 1µA typical power-down current - deployed for XIP code execution, firmware storage, and parameter retention in space-constrained embedded systems.

For engineers reviewing the W25Q257FVEIF TR datasheet, W25Q257FVEIF TR pinout, W25Q257FVEIF TR application, or W25Q257FVEIF TR equivalent, key selection criteria include 4-byte addressing support, Quad Enable (QE) bit configuration, /HOLD vs /RESET pin behavior in WSON-8 package, and JEDEC SFDP register compatibility for automated initialization.

Technical Context

The W25Q257FVEIF TR implements a flexible SPI-compatible command set with three address modes (3-byte default, 4-byte enabled via B7h/E9h), supports both volatile and non-volatile status register bits (BP0–BP3, TB, CMP, SRP0/SRP1, QE, ADS/ADP), and features dual-function pins (IO2 = /WP, IO3 = /HOLD or /RESET) dependent on QE bit state and package type.

It integrates hardware write protection via /WP and /HOLD pins (active-low), software-controlled block/sector locking (36h/39h/7Eh/98h), erase/program suspend/resume (75h/7Ah), and three 256-byte one-time-programmable security registers - all managed through dedicated status and extended address registers accessible via standard SPI instructions.

Key Specifications

Pinout & Package

W25Q257FVEIF TR uses the 8-pad WSON 8×6 mm package (Package Code E), with exposed pad for thermal dissipation and no lead finish restriction - suitable for reflow soldering and high-density PCB layouts.

Key Features

Applications

Equivalent & Alternatives

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

Compared with W25Q257FVEIF TR, MX25L25745EMI-10G offers identical density but omits QPI and SFDP - limiting bootloader flexibility - while S25FL256SAGMFI000 trades speed for HyperBus compatibility and lacks Quad Enable configurability, reducing interoperability in multi-vendor SPI ecosystems.

Availability

W25Q257FVEIF TR is available at Aetrix Electronics and suitable for industrial PLC firmware storage, automotive ADAS boot image hosting, and medical imaging device parameter archiving requiring stable component supply across extended product lifecycles.

Supply support for W25Q257FVEIF 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 since 1987.

The W25Q series targets high-performance embedded systems needing reliable, low-power, pin-efficient code and data storage - optimized for XIP, OTA updates, and secure firmware deployment.

FAQ

What is the package type and lead count of the W25Q257FVEIF TR?

The W25Q257FVEIF TR uses an 8-pad WSON (8×6 mm) package with exposed thermal pad, designated Package Code E in Winbond documentation. It has no leads - the pads are surface-mount terminals including /CS, DO (IO1), /WP (IO2), GND, DI (IO0), CLK, /HOLD or /RESET (IO3), and VCC. This compact footprint supports high-density PCB layouts and reflow assembly.

Does the W25Q257FVEIF TR support 4-byte addressing, and how is it enabled?

Yes, the W25Q257FVEIF TR supports 4-byte addressing via the Enter 4-Byte Address Mode instruction (B7h). The ADP bit (bit 7 of Status Register-3) determines whether the device powers up in 3-byte or 4-byte mode. When ADP=1, it defaults to 4-byte mode; ADP is non-volatile and writable via 11h instruction. Exit is performed using E9h.

How does the /HOLD pin function differ between Standard SPI and Quad SPI modes on the W25Q257FVEIF TR?

In Standard/Dual SPI mode (QE=0), the /HOLD pin (IO3) pauses active transfers when pulled low. In Quad SPI mode (QE=1), IO3 becomes a data I/O line (IO3), disabling the /HOLD function entirely. The W25Q257FVEIF TR does not support simultaneous /HOLD and Quad I/O - the pin's role is mutually exclusive and controlled by the QE bit in Status Register-2.

What is the purpose of the Quad Enable (QE) bit in the W25Q257FVEIF TR, and where is it located?

The Quad Enable (QE) bit is bit 1 of Status Register-2 (SR2), a volatile/non-volatile writable bit. When QE=1, the /WP and /HOLD pins become IO2 and IO3 respectively, enabling Quad SPI operation. QE must be set via Write Status Register-2 (31h) instruction and persists across power cycles unless cleared. Its state directly governs pin multiplexing and interface mode capability in the W25Q257FVEIF TR.

Can the W25Q257FVEIF TR be used for execute-in-place (XIP) applications, and what features enable this?

Yes, the W25Q257FVEIF TR supports true XIP via its Continuous Read Mode and QPI interface. Fast Read Quad I/O (EBh) delivers up to 416 MHz effective throughput, while QPI reduces instruction overhead to two clocks. Combined with 8-clock address setup and uniform 4KB sectors, the W25Q257FVEIF TR enables deterministic, low-latency code execution directly from flash - eliminating RAM copy requirements in resource-constrained microcontrollers.