Winbond Electronics Corporation W25Q64CVZPAG

Overview

W25Q64CVZPAG from Winbond is a 64M-bit (8MB) serial NOR flash memory IC supporting Standard, Dual, and Quad SPI interfaces with up to 80MHz clock frequency, 4KB uniform sector architecture, and 1µA typical power-down current. It enables execute-in-place (XIP) code execution, firmware storage, and parameter retention in space-constrained embedded systems.

For engineers reviewing the W25Q64CVZPAG datasheet, W25Q64CVZPAG pinout, W25Q64CVZPAG application, or W25Q64CVZPAG equivalent, key selection criteria include Quad SPI enable (QE bit), 4KB sector erase granularity, hardware write protection via /WP and /HOLD pins, and compatibility with JEDEC SFDP for auto-configuration.

Technical Context

The W25Q64CVZPAG implements a SPI command set compliant with Mode 0 and Mode 3 clock polarity, supports dual/quad I/O via configurable IO0–IO3 pins, and requires non-volatile Quad Enable (QE) bit setting in Status Register-2 to activate Quad SPI functionality. Its block diagram integrates a 256-byte page buffer, SFDP register, and three 256-byte security registers with OTP locks.

It features programmable write protection using BP0–BP2, TB, SEC, and CMP bits, plus hardware-level protection via active-low /WP and /HOLD pins-though both are repurposed as IO2/IO3 in Quad SPI mode. Erase suspend/resume capability allows interruption of background erase/program operations without data loss.

Key Specifications

Pinout & Package

W25Q64CVZPAG uses an 8-pad WSON 6×5 mm package (package code ZP) with exposed thermal pad. Pin functions are identical across SOIC, PDIP, and WSON variants per datasheet Section 3.4.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MX25L6433FZNI-10G and S25FL164K0XMFI010, W25Q64CVZPAG offers broader SPI mode compatibility (Mode 0/3), simpler JEDEC SFDP integration, and proven field reliability in cost-sensitive industrial designs-making it optimal where interoperability and ease of migration matter more than peak bandwidth.

Availability

W25Q64CVZPAG is available at Aetrix Electronics and suitable for industrial PLCs, automotive infotainment systems, and IoT edge gateways requiring stable component supply, long-lifecycle support, and consistent parametric performance across production batches.

Supply support for W25Q64CVZPAG 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 serial NOR/NAND flash, RAM, and mobile DRAM products.

The W25Q series targets embedded systems requiring high-speed, low-pin-count non-volatile storage with robust firmware update capabilities and industrial temperature resilience.

FAQ

What is the package type and footprint of W25Q64CVZPAG?

W25Q64CVZPAG uses an 8-pad WSON 6×5 mm package (ZP code) with exposed thermal pad. It has a standard 0.5 mm pitch, 2.0 mm × 2.5 mm body size, and is RoHS-compliant. The pinout matches SOIC/VSOP variants electrically but requires reflow-compatible land pattern per Winbond's AN-1019 layout guidelines.

Does W25Q64CVZPAG support Quad SPI out of the box?

No-W25Q64CVZPAG requires explicit configuration of the Quad Enable (QE) bit in Status Register-2 to activate Quad SPI mode. Until QE=1 is written, /WP and /HOLD remain dedicated hardware protection pins. This prevents accidental loss of write protection during initialization.

How does W25Q64CVZPAG handle power-loss during programming?

W25Q64CVZPAG includes an internal write inhibit threshold and power-up timing sequence that blocks commands until VCC stabilizes above 2.7 V. If power drops mid-program, the device aborts the operation and retains pre-write data integrity-no partial page writes occur due to its page-buffered architecture.

Can W25Q64CVZPAG be used for secure key storage?

Yes-W25Q64CVZPAG provides three 256-byte security registers with one-time-programmable (OTP) lock bits (LB1–LB3). Once locked, these registers become read-only and immune to erase commands, making them suitable for storing cryptographic keys or calibration secrets in production firmware.

What is the maximum continuous read throughput achievable with W25Q64CVZPAG?

Using Fast Read Quad I/O (EBh) at 80MHz clock, W25Q64CVZPAG achieves up to 40 MB/s effective throughput (320 MHz equivalent). This is validated under continuous read mode with wrap-length configured for 32-byte bursts, minimizing instruction overhead and enabling real-time XIP execution.