W25X40VSSIG T&R

Memory IC Overview

The W25X40VSSIG T&R is a 4M-bit (512K x 8) Serial NOR Flash memory from the Winbond W25X series. It features a 4KB uniform sector architecture and supports standard SPI as well as Dual Output SPI modes for data transfer rates up to 150 M-bits per second. The device operates on a single 2.7V to 3.6V power supply with active current consumption of 5mA and standby current of 1µA. It includes hardware and software write protection mechanisms, such as the /WP pin and Status Register bits. The component is housed in an 8-pin SOIC package.

Memory IC Feature Summary

• Supports Dual Output SPI mode for high-speed code download applications
• Features flexible write protection via /WP pin and programmable Status Register bits
• Includes Hold function to pause operations while maintaining selected state
• Provides JEDEC standard manufacturer and device identification

Memory IC Applications

• Code shadowing and execution from RAM
• Storage of voice, text, and data in space-constrained systems
• Parameter storage requiring 4KB sector flexibility

Memory IC Procurement Notes

Verify the specific suffix 'T&R' against official documentation to confirm tape-and-reel packaging status, as datasheet references primarily list SOIC packages without explicit reel specifications. Confirm end-of-life or obsolescence status through direct manufacturer channels, as availability may vary. Ensure compatibility with existing SPI controller configurations supporting dual output instructions.

Memory IC Selection Notes

Select this component for designs requiring non-volatile storage with low pin count and moderate speed requirements. The 4KB sector size is suitable for frequent parameter updates. Verify that the system voltage remains within the 2.7V to 3.6V range. Consider the 8-pin SOIC footprint constraints during PCB layout.

Memory IC Part Context

This part belongs to the W25X family of Serial Flash memories, which also includes 1M-bit, 2M-bit, and 8M-bit variants. The family shares common instruction sets and electrical characteristics, allowing for potential architectural consistency across different storage capacity requirements within the same product line.

Memory IC Replacement Considerations

W25X40CLSNIG

Memory IC FAQ

What is the maximum clock frequency supported?

The device supports SPI clock frequencies of up to 75MHz.

How does the Hold function work?

Bringing the /HOLD pin low pauses device operation while keeping /CS active, ignoring DIO and CLK signals until /HOLD is released.