Winbond Electronics Corporation W25Q64BVZEIG

Overview

W25Q64BVZEIG from Winbond is a 64M-bit (8MB) serial NOR flash memory with Dual/Quad SPI interface, organized as 32,768 pages of 256 bytes each, supporting 4KB uniform sectors, 32KB/64KB blocks, and up to 80MHz clock operation for 320MHz equivalent Quad SPI throughput. It operates on a single 2.7–3.6V supply, draws 4mA active current and <1µA in power-down, and targets embedded code storage and XIP execution in space-constrained industrial and consumer systems.

For engineers reviewing the W25Q64BVZEIG datasheet, W25Q64BVZEIG pinout, W25Q64BVZEIG application, or W25Q64BVZEIG equivalent, this page delivers verified package mapping (8-pad WSON 8×6mm, code ZE), confirmed Quad SPI timing (6Bh/EBh/E3h instructions), hardware write protection via /WP and /HOLD pins, JEDEC ID read (9Fh), and 64-bit unique serial number support - all validated against Winbond's official Revision E datasheet.

Technical Context

The W25Q64BVZEIG implements a standard SPI bus (Mode 0/3) with optional Dual SPI (3Bh/BBh) and Quad SPI (6Bh/EBh/E3h) modes enabled by setting the non-volatile Quad Enable (QE) bit in Status Register-2. Its command-and-control logic supports full instruction set including sector/block/chip erase, page program, continuous read mode (8-clock address overhead), and high-performance mode (A3h).

Internal architecture includes a 256-byte page buffer, column/row decode with 4KB sector granularity, hardware write protect logic tied to /WP and SRP bits, and status register latches (BUSY, WEL, BP2–BP0, TB, SEC, SRP1/SRP0, QE). The device requires /CS low-to-high transition at power-up before accepting commands and enforces tPUW delay before enabling write operations.

Key Specifications

Pinout & Package

W25Q64BVZEIG uses an 8-pad WSON (8×6 mm) package (JEDEC MO-241AC, Winbond package code ZE), with exposed thermal pad (EP) on underside for enhanced thermal dissipation in compact PCB layouts.

Key Features

Applications

Equivalent & Alternatives

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

Compared with W25Q64BVZEIG, MX25L6433FZNI-10G offers faster clocking but lacks Quad I/O and device identity, while S25FL164K0XMFI010 matches voltage and speed but introduces firmware porting effort due to divergent register mapping and missing hardware write protect.

Availability

W25Q64BVZEIG is available at Aetrix Electronics and suitable for industrial HMI firmware storage, automotive infotainment boot code, IoT edge device OTA storage, medical diagnostic instrument code image, and embedded code shadowing requiring stable component supply across multi-year production cycles.

Supply support for W25Q64BVZEIG 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, serial NOR/NAND flash, and mobile DRAM solutions for industrial, automotive, and consumer markets.

The W25Q series was designed to replace parallel NOR flash in embedded systems by delivering Quad SPI performance, flexible sector architecture, and robust write protection - targeting code execution, firmware storage, and secure boot applications.

FAQ

What is the package type and footprint for W25Q64BVZEIG?

W25Q64BVZEIG uses an 8-pad WSON (8×6 mm) package with exposed thermal pad (JEDEC MO-241AC, Winbond package code ZE). It has a 0.5 mm pitch, 2.1 mm body height, and requires solder mask defined pads per Winbond's recommended layout guidelines. This compact footprint supports high-density PCB designs in space-constrained applications like wearables and sensor nodes.

Does W25Q64BVZEIG support Quad SPI mode out of the box?

No - W25Q64BVZEIG requires the Quad Enable (QE) bit in Status Register-2 to be set via Write Status Register (01h) instruction before Quad SPI instructions (6Bh, EBh, E3h) become functional. By default, QE=0 after power-up, so standard or Dual SPI must be used first to configure the device. Once set, QE is non-volatile and persists across power cycles.

How does hardware write protection work on W25Q64BVZEIG?

W25Q64BVZEIG implements hardware write protection via the /WP pin, which - when pulled low - prevents writes to the Status Register unless SRP0/SRP1 bits are cleared. When the Quad Enable bit is set, /WP becomes IO2 and hardware protection is disabled. For full protection, combine /WP with software-controlled BP bits and SRP lock to restrict sector/block modification during runtime.

Can W25Q64BVZEIG be used for execute-in-place (XIP) applications?

Yes - W25Q64BVZEIG supports true XIP via Continuous Read Mode (enabled by Fast Read Quad I/O EBh instruction), which reduces instruction overhead to just 8 clocks for 24-bit addressing. This enables microcontrollers with Quad SPI controllers (e.g., STM32H7, NXP i.MX RT) to execute code directly from flash without copying to RAM, reducing boot time and memory footprint.

What is the purpose of the /HOLD pin on W25Q64BVZEIG?

The /HOLD pin on W25Q64BVZEIG pauses ongoing SPI transactions when asserted low while /CS is active, placing DO in high-impedance and ignoring DI/CLK inputs. It is essential for multi-device SPI buses where priority interrupts require temporary bus arbitration. Note: /HOLD is disabled during Quad SPI operation since the pin is repurposed as IO3.