Winbond Electronics Corporation W25Q64CVZEJP

Overview

W25Q64CVZEJP from Winbond is a 64M-bit (8MB) serial NOR flash memory supporting standard, dual, and quad SPI interfaces with up to 80MHz clock frequency, 4KB uniform sector erase granularity, and true execute-in-place (XIP) capability via Continuous Read Mode. It operates from 2.7V–3.6V, draws 4mA active current and <1µA in power-down, and targets embedded code storage and firmware update applications.

For engineers reviewing the W25Q64CVZEJP datasheet, W25Q64CVZEJP pinout, W25Q64CVZEJP application, or W25Q64CVZEJP equivalent, key selection criteria include quad I/O support with QE bit configuration, hardware write protection via /WP and /HOLD pins, 4KB sector flexibility for parameter storage, and JEDEC-compliant identification including 64-bit unique ID and SFDP register.

Technical Context

The W25Q64CVZEJP implements a SPI command set compliant with modes 0 and 3, supports standard (DI/DO), dual (IO0/IO1), and quad (IO0–IO3) I/O configurations, and requires non-volatile Quad Enable (QE) bit setting in Status Register-2 to activate quad functionality. Its architecture includes a 256-byte page buffer, 2,048 erasable 4KB sectors, and 128 erasable 64KB blocks.

It integrates three 256-byte security registers with OTP locks, volatile/non-volatile status register bits, and programmable block protection (BP2–BP0, TB, SEC, CMP) with top/bottom array control. The device supports erase/program suspend/resume and continuous read with wrap lengths of 8/16/32/64 bytes - enabling low-overhead XIP operation with as few as 8 clocks to address memory.

Key Specifications

Pinout & Package

W25Q64CVZEJP uses an 8-pad WSON 8x6-mm package (JEDEC MO-241AC, package code ZE), with exposed thermal pad. Pin functions are identical across SOIC/VSOP/PDIP/WSON variants except for pin numbering and physical layout.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MX25L6433FZNI-10G and S25FL164K0XMFI010, the W25Q64CVZEJP delivers superior integration of hardware write protection, security registers with OTP locks, and JEDEC-standardized identification - reducing BOM count and qualification effort in medical and industrial designs.

Availability

W25Q64CVZEJP is available at Aetrix Electronics and suitable for industrial firmware storage, IoT edge device boot code, and automotive infotainment UI assets requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for W25Q64CVZEJP 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 flash, mobile DRAM, and code storage products for embedded and industrial markets.

The W25Q series was designed specifically for high-reliability code execution and firmware storage in resource-constrained systems - emphasizing quad SPI performance, security features, and industrial temperature resilience.

FAQ

What is the package type and footprint for W25Q64CVZEJP?

W25Q64CVZEJP uses an 8-pad WSON 8x6-mm package (JEDEC MO-241AC, package code ZE) with exposed thermal pad. It shares pinout compatibility with other W25Q64CV variants in SOIC, PDIP, and TFBGA packages but requires specific land pattern per IPC-7351B for the 8x6-mm WSON variant. The pin assignments are /CS, DO(IO1), /WP(IO2), GND, DI(IO0), CLK, /HOLD(IO3), and VCC.

Does W25Q64CVZEJP support Quad SPI out-of-the-box?

No - W25Q64CVZEJP requires the Quad Enable (QE) bit in Status Register-2 to be set to '1' before quad SPI instructions (e.g., EBh, 6Bh) become functional. Until QE is programmed, only standard and dual SPI modes operate. The /WP and /HOLD pins serve as hardware write protect inputs in standard mode but become IO2 and IO3 respectively after QE activation.

How does the 4KB sector architecture benefit firmware update design?

The uniform 4KB sector erase granularity in W25Q64CVZEJP enables atomic, low-risk firmware patching: only modified sectors need erasure and reprogramming, preserving adjacent code and configuration data. This avoids full-chip erase delays and reduces wear on unrelated memory regions - critical for field-upgradable medical and industrial devices where update failure tolerance is zero.

Can W25Q64CVZEJP be used in systems requiring AEC-Q100 qualification?

W25Q64CVZEJP itself is not AEC-Q100 qualified; however, Winbond offers automotive-grade variants (e.g., W25Q64JW) with AEC-Q100 Grade 3 (–40°C to +105°C) qualification and enhanced reliability testing. For automotive infotainment use cases, W25Q64CVZEJP may be deployed in non-safety-critical subsystems, but formal AEC-Q100 compliance requires selecting the J-series part number.

What is the role of the SFDP register in W25Q64CVZEJP?

The SFDP (Serial Flash Discoverable Parameters) register in W25Q64CVZEJP provides standardized, read-only access to device-specific timing, geometry, and feature parameters (e.g., erase times, voltage ranges, quad enable procedure) via instruction 5Ah. This enables host firmware to auto-configure SPI controllers without hard-coded assumptions - improving portability across flash vendors and simplifying qualification for new board revisions.