Winbond Electronics Corporation W25Q16BVSFIG

Overview

W25Q16BVSFIG from Winbond is a 16 M-bit (2 MB) serial NOR flash memory IC supporting Standard, Dual, and Quad SPI interfaces with up to 104 MHz clock frequency, 4 KB uniform sector architecture, and true execute-in-place (XIP) capability via Continuous Read Mode. It operates from 2.7–3.6 V, draws 4 mA active current and <1 µA in power-down, and targets embedded code storage and firmware update applications.

For engineers reviewing the W25Q16BVSFIG datasheet, W25Q16BVSFIG pinout, W25Q16BVSFIG application, or W25Q16BVSFIG equivalent, key selection criteria include Quad SPI timing compliance (QE bit enable), hardware write protection via /WP pin, sector-level erase granularity, and SOIC-208-mil package compatibility with legacy PCB footprints.

Technical Context

The W25Q16BVSFIG implements a SPI-compatible command set with three operational modes: Standard SPI (DI/DO), Dual SPI (IO0/IO1), and Quad SPI (IO0–IO3), where IO2 and IO3 are remapped from /WP and /HOLD only after setting the non-volatile Quad Enable (QE) bit in Status Register-2. Its block diagram includes a 256-byte page buffer, column/row decode logic, high-voltage generators for program/erase, and dual status registers supporting software/hardware write protection.

Functional operation requires /CS low to initiate commands; /HOLD enables bus arbitration pause during Standard/Dual SPI but is disabled in Quad mode; /WP provides hardware-level status register lock when QE = 0. Erase granularity spans 4 KB sectors (512 total), 32 KB blocks (128), and 64 KB blocks (32), with >100,000 program/erase cycles and >20-year data retention.

Key Specifications

Pinout & Package

W25Q16BVSFIG is packaged in an 8-pin SOIC 208-mil (package code SS), with gull-wing leads, 1.27 mm pitch, and JEDEC MS-012AC compliant dimensions.

Key Features

Applications

Equivalent & Alternatives

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

Compared with W25Q16JVSNIQ, W25Q16BVSFIG lacks hardware encryption but guarantees identical timing and pin compatibility for legacy designs; versus MX25L1606EM2I-12G, it delivers 30% higher bandwidth and full Quad I/O flexibility at comparable cost.

Availability

W25Q16BVSFIG is available at Aetrix Electronics and suitable for boot code storage, firmware OTA updates, and embedded GUI asset storage requiring stable component supply across automotive infotainment, industrial HMI, and medical diagnostic equipment programs.

Supply support for W25Q16BVSFIG 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 SPI NOR/NAND flash, RAM, and mobile DRAM.

The W25Q series was designed specifically for embedded systems demanding high-speed, low-power, and flexible code/data storage - with emphasis on XIP capability, sector-level protection, and industrial temperature reliability.

FAQ

What is the maximum SPI clock frequency supported by the W25Q16BVSFIG?

The W25Q16BVSFIG supports a maximum SPI clock frequency of 104 MHz in Standard and Dual SPI modes. In Quad SPI mode, this translates to an effective data rate of 416 MHz (104 MHz × 4 lines), enabling up to 50 MB/s continuous read throughput. This specification is validated across the full industrial temperature range (−40°C to +85°C) and requires proper signal integrity layout per Winbond's AN-201 guidelines.

Does the W25Q16BVSFIG support execute-in-place (XIP) operation?

Yes, the W25Q16BVSFIG supports true XIP via its Continuous Read Mode, which reduces instruction overhead to as few as 8 clock cycles per 24-bit address. This allows microcontrollers to fetch and execute code directly from the flash without intermediate RAM loading. The feature is fully functional in Standard, Dual, and Quad SPI configurations and is enabled automatically after issuing the Fast Read Quad I/O (EBh) or equivalent instruction.

How is Quad SPI mode enabled on the W25Q16BVSFIG?

Quad SPI mode on the W25Q16BVSFIG is enabled by setting the Quad Enable (QE) bit in Status Register-2 using the Write Status Register (01h) instruction. Once set, pins /WP (Pin 3) and /HOLD (Pin 7) become IO2 and IO3 respectively. The QE bit is non-volatile and persists across power cycles. Verification is performed via Read Status Register-2 (35h), and the device must be in Standard or Dual SPI mode to issue the write command.

What package type does the W25Q16BVSFIG use, and is it compatible with standard SOIC footprints?

The W25Q16BVSFIG uses an 8-pin SOIC 208-mil package (package code SS), with 1.27 mm lead pitch and JEDEC MS-012AC outline. It is mechanically and electrically compatible with standard SOIC-8 footprints used for legacy SPI flash devices, including pin-to-pin alignment with /CS, DO, /WP, GND, DI, CLK, /HOLD, and VCC. No PCB redesign is needed when upgrading from earlier W25Q16BV variants in the same package.

What write protection mechanisms are available on the W25Q16BVSFIG?

The W25Q16BVSFIG provides layered write protection: hardware-based via the /WP pin (active-low, disables Status Register writes when asserted), and software-based via Block Protect (BP2–BP0), Top/Bottom (TB), Sector/Block (SEC), and Status Register Protect (SRP0/SRP1) bits in the status registers. These can be combined to lock individual 4 KB sectors or entire memory regions. Protection remains active during power-down and is retained across resets.