W25Q16CLSNIG TR

Memory IC Overview

The W25Q16CLSNIG TR is a 16M-bit (2M-byte) Serial Flash memory from Winbond's SpiFlash family, housed in an 8-pin SOIC package with tape-and-reel packaging. It operates on a single 2.3V to 3.6V supply, drawing 4mA active current and less than 1µA in power-down mode. The device supports standard SPI as well as high-performance Dual and Quad I/O modes, enabling clock frequencies up to 50MHz with equivalent rates of 100MHz for Dual I/O and 200MHz for Quad I/O. It features uniform 4KB sectors, 32KB/64KB blocks, and advanced security including hardware write protection and a 64-bit unique ID.

Memory IC Feature Summary

• Supports Standard, Dual, and Quad SPI interfaces with Continuous Read Mode for efficient XIP operations
• Provides flexible architecture with 4KB uniform sector erase and programmable top/bottom block protection
• Includes advanced security features such as hardware write protect, OTP locks, and a 64-bit unique serial number

Memory IC Applications

• Code shadowing to RAM
• Executing code directly from Dual/Quad SPI (XIP)
• Storing voice, text, and data in space-constrained systems

Memory IC Procurement Notes

Verify the specific suffix 'TR' confirms tape-and-reel packaging versus tube options. Confirm the 'SNIG' designation aligns with the required RoHS compliance and lead-free specifications. Ensure the operating voltage range of 2.3V to 3.6V matches the system design requirements. Check for end-of-life status or obsolescence notices from Winbond Electronics before finalizing procurement plans.

Memory IC Selection Notes

Select this component when dual or quad SPI performance is required for code execution or high-speed data transfer. It is suitable for applications needing flexible write protection via hardware pins or software registers. Consider the 8-pin SOIC package for space-constrained designs requiring surface mount technology. Verify compatibility with the system's SPI controller support for Dual/Quad I/O instructions.

Memory IC Part Context

The W25Q16CL belongs to Winbond's 25Q series of Serial Flash memories, designed for systems with limited space, pins, and power. This series offers flexibility beyond ordinary Serial Flash devices, supporting various package types including SOIC, VSOP, and WSON. The CL variant specifically targets the 2.3V to 3.6V voltage range, distinguishing it from other series members.

Memory IC Replacement Considerations

W25Q16BVDAIG

Memory IC FAQ

How does the Quad Enable (QE) bit affect pin functionality?

When the QE bit in Status Register-2 is set for Quad I/O operation, the /WP pin functions as IO2 and the /HOLD pin functions as IO3.

What is the maximum equivalent clock rate for Quad I/O?

With a 50MHz SPI clock, the Fast Read Quad I/O instruction allows an equivalent clock rate of 200MHz.