W25Q40RLSSJQ TR

Memory IC Overview

The W25Q40RLSSJQ TR is a 4-megabit (512K x 8) SPI NOR flash memory component manufactured by Winbond Electronics. It operates within a supply voltage range of 2.3V to 3.6V and supports clock frequencies up to 133 MHz with an access time of 4.5 ns. The device features 4KB uniform sector erasure capabilities and utilizes QPI interface modes. It is housed in an 8-SOIC package, rated for industrial temperatures from -40°C to +105°C, and delivered in tape-and-reel packaging.

Memory IC Feature Summary

• Supports high-speed serial communication via standard SPI and Quad I/O protocols including QPI mode.
• Provides non-volatile data storage with uniform 4KB sector erase architecture for flexible block management.
• Operates reliably across extended industrial temperature ranges suitable for demanding environments.

Memory IC Applications

• Firmware storage in embedded systems requiring reliable code execution
• Data logging applications needing persistent non-volatile memory retention
• Industrial control units operating under wide thermal conditions

Memory IC Procurement Notes

Verify the specific suffix designation against official manufacturer documentation to confirm the tape-and-reel configuration. Ensure compatibility with existing PCB footprints for the 8-SOIC package. Confirm that the voltage levels align with system requirements before integration. Cross-reference part numbers with current distributor catalogs to avoid obsolete variants.

Memory IC Selection Notes

Select this component when a 4M-bit capacity is required with support for both standard SPI and Quad I/O operations. The 8-SOIC package offers a balance between pin count and board space efficiency. Verify that the 2.3V minimum supply voltage meets the target system's power rail specifications. Consider the industrial temperature rating if the application environment exceeds commercial limits.

Memory IC Part Context

This part belongs to the Winbond SpiFlash series, designed for general-purpose non-volatile storage. The 'RL' suffix typically denotes specific process or feature variations within the family. The 'TR' suffix indicates the reel-based packaging format intended for automated surface-mount assembly processes.

Memory IC Replacement Considerations

W25Q40RLSSJM is listed as a parameter-equivalent alternative. Verify pinout and electrical characteristics match before substitution. Other family members may require different packaging or voltage tolerances.