W25Q64CVTBIG TR

Memory IC Overview

The W25Q64CV is a 64M-bit (8M-byte) Serial Flash memory device from Winbond Electronics, designed for systems with limited space and power. It supports standard SPI as well as high-performance Dual and Quad SPI interfaces, enabling clock frequencies up to 80MHz with equivalent rates of 160MHz and 320MHz respectively. The device operates on a single 2.7V to 3.6V supply, featuring low active current consumption of 4mA and standby current below 1µA. It includes flexible architecture with uniform 4KB sectors and advanced security features such as hardware write protection and unique identification.

Memory IC Feature Summary

• Supports Standard, Dual, and Quad SPI operations for efficient data transfer and Execute-In-Place (XIP) capabilities.
• Features flexible erase architecture with uniform 4KB sectors and 32KB/64KB blocks for versatile data storage.
• Includes advanced security mechanisms with software/hardware write protection and 64-bit unique serial number.
• Operates within a wide voltage range (-40°C to +85/105°C) with low power consumption modes.

Memory IC Applications

• Code shadowing to RAM
• Execute-In-Place (XIP) applications
• Voice, text, and data storage

Memory IC Procurement Notes

Verify the specific package code required for your design, as the W25Q64CV family offers multiple options including 8-pin SOIC, VSOP, PDIP, WSON, and TFBGA configurations. Confirm that the ordering suffix matches the desired physical footprint and temperature rating. Ensure compatibility with your system's SPI interface mode requirements, particularly regarding Quad Enable bit settings if utilizing high-speed Quad I/O operations.

Memory IC Selection Notes

Select this component when a 64M-bit non-volatile storage solution is needed with support for high-speed Dual or Quad SPI transfers. It is suitable for applications requiring XIP functionality due to its continuous read mode capability. Consider the available package types to match board space constraints. Verify that the operating voltage range of 2.7V to 3.6V aligns with your system's power supply rails.

Memory IC Part Context

The W25Q64CV belongs to the SpiFlash® family of serial flash memories from Winbond Electronics. It is part of the 25Q series, which provides enhanced performance and flexibility compared to ordinary serial flash devices. This specific model focuses on the 64M-bit density variant, offering a balance of storage capacity and interface speed for embedded systems.

Memory IC Replacement Considerations

Check datasheet specifications for pinout and electrical characteristics compatibility before substituting with other 64M-bit serial flash parts. Verify support for required SPI modes (Standard/Dual/Quad) and voltage ranges. Note that package dimensions may vary significantly between manufacturers.

Memory IC FAQ

How does the device handle hold operations during Quad SPI?

The /HOLD function is not available during Quad SPI operation because the pin is repurposed as IO3. It is only supported for Standard and Dual SPI modes.

What is the purpose of the Quad Enable (QE) bit?

The QE bit in Status Register-2 must be set to enable Quad SPI instructions. When enabled, the /WP and /HOLD pins function as IO2 and IO3 respectively.