Winbond Electronics Corporation W25Q64CVSSJP

Overview

W25Q64CVSSJP from Winbond is a 64M-bit (8MB) serial NOR flash memory IC supporting Standard, Dual, and Quad SPI interfaces with 80MHz clock rate, 4KB uniform sector architecture, and hardware write protection via /WP and /HOLD pins - used for code storage, XIP execution, and firmware parameter retention in embedded microcontrollers.

For engineers reviewing the W25Q64CVSSJP datasheet, W25Q64CVSSJP pinout, W25Q64CVSSJP application, or W25Q64CVSSJP equivalent, key selection criteria include Quad SPI enable (QE bit), 4mA active current, 1µA power-down, JEDEC ID read capability, and SOIC-8 208-mil package compatibility with legacy PCB footprints.

Technical Context

The W25Q64CVSSJP implements a SPI command-set compliant with Mode 0 and Mode 3 clock polarity, supports instruction-based erase (sector/block/chip), program (page up to 256 bytes), and read operations, and integrates dual status registers with non-volatile Quad Enable (QE) bit required for Quad I/O mode activation.

Its architecture includes 32,768 × 256-byte programmable pages, 2,048 erasable 4KB sectors, and 128 erasable 64KB blocks, with dedicated security registers (3×256-byte), SFDP register for discoverable parameters, and 64-bit unique serial number per device.

Key Specifications

Pinout & Package

W25Q64CVSSJP is packaged in an 8-pin SOIC 208-mil (package code SS), with pin 1 = /CS, pin 2 = DO (IO1), pin 3 = /WP (IO2), pin 4 = GND, pin 5 = DI (IO0), pin 6 = CLK, pin 7 = /HOLD (IO3), pin 8 = VCC.

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 W25Q64CVSSJP delivers optimal balance of SPI compatibility, Quad I/O throughput, and integrated security features - making it ideal for cost-sensitive, 3.3V-based MCU platforms requiring field-upgradable firmware and secure parameter storage without controller redesign.

Availability

W25Q64CVSSJP is available at Aetrix Electronics and suitable for boot code storage, firmware OTA updates, configuration data retention, secure key management, and industrial calibration applications requiring stable component supply and long-term lifecycle assurance.

Supply support for W25Q64CVSSJP 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 memory solutions, including serial NOR/NAND flash, RAM, and trusted computing components.

The W25Q series targets embedded systems requiring high-reliability, low-power, and SPI-compatible non-volatile storage - designed specifically for code execution, firmware updates, and secure parameter retention in resource-constrained environments.

FAQ

What is the package type and pin count of the W25Q64CVSSJP?

The W25Q64CVSSJP uses an 8-pin SOIC 208-mil package (package code SS). Its pinout includes /CS, DO (IO1), /WP (IO2), GND, DI (IO0), CLK, /HOLD (IO3), and VCC - fully compatible with industry-standard 8-pin SPI flash footprints and socket adapters. This package supports both Standard and Dual SPI operation out-of-box, with Quad SPI enabled via the QE bit in Status Register-2.

Does the W25Q64CVSSJP support Quad SPI mode, and how is it enabled?

Yes, the W25Q64CVSSJP supports Quad SPI mode using instructions like Fast Read Quad I/O (EBh) and Word Read Quad I/O (E7h). Activation requires setting the non-volatile Quad Enable (QE) bit in Status Register-2 via the Write Status Register (01h) instruction. Once set, pins /WP and /HOLD become IO2 and IO3 respectively - enabling four-bit-wide data transfers at up to 320MHz effective rate.

What is the minimum and maximum supply voltage for reliable operation of the W25Q64CVSSJP?

The W25Q64CVSSJP operates reliably across a supply voltage range of 2.7V to 3.6V. At 2.7V, all AC timing parameters remain valid per datasheet specifications, and power-down current stays below 1µA. Operation outside this range - especially below 2.7V - risks incomplete program/erase cycles and status register corruption, so proper power sequencing and brownout detection are essential in the host system design.

How many program/erase cycles does the W25Q64CVSSJP guarantee, and what is its data retention period?

The W25Q64CVSSJP guarantees more than 100,000 program/erase cycles per sector and 20-year data retention at +85°C ambient temperature. These figures are validated per JEDEC JESD22-A117 stress testing and apply to all 4KB sectors across the full 8MB array. The endurance rating supports frequent firmware updates in industrial controllers and medical devices deployed for extended field lifetimes.

Can the W25Q64CVSSJP be used for execute-in-place (XIP) applications, and what feature enables this?

Yes, the W25Q64CVSSJP supports true execute-in-place (XIP) operation via its Continuous Read Mode, which reduces instruction overhead to just 8 clock cycles for address setup and enables seamless wrap lengths of 8/16/32/64 bytes. When combined with Quad SPI mode (enabled by the QE bit), it delivers sustained 40MB/s read throughput - sufficient for real-time code execution directly from flash in Cortex-M7 and RISC-V cores without intermediate RAM loading.