BY25Q40BSTIG(T)

Memory IC Overview

The BY25Q40BSTIG(T) is a 4M-bit Serial Peripheral Interface (SPI) NOR Flash memory manufactured by BYTe Semiconductor. It supports Standard, Dual, Quad SPI, and QPI modes with read speeds up to 432 Mbits/s in Quad I/O mode. The device operates on a single 2.7V to 3.6V supply voltage. Key features include 100k program-erase cycle endurance, 20-year data retention, and flexible architecture with 4KB sectors and 32/64KB blocks. It offers software and hardware write protection via status registers and includes three 256-byte security registers with OTP lock capabilities.

Memory IC Feature Summary

• Supports multiple interface modes including Standard, Dual, Quad SPI, and QPI for high-speed data transfer and execute-in-place operations.
• Provides comprehensive write protection mechanisms through software commands and hardware /WP pin control, alongside configurable block protection.
• Integrates three 256-byte security registers with one-time programmable lock bits to permanently secure sensitive data areas.

Memory IC Applications

• Code shadowing to RAM for system boot processes
• Execute In Place (XIP) applications requiring direct code execution from flash
• Storage of voice, text, and data in space-constrained embedded systems

Memory IC Procurement Notes

Verify the specific suffix 'T' against the manufacturer's official ordering information to confirm packaging type and tape/reel specifications. Ensure the operating voltage range of 2.7V to 3.6V aligns with your system power rails, as this model differs from lower-voltage variants. Confirm temperature grade requirements match the commercial or industrial ratings specified in the datasheet.

Memory IC Selection Notes

Select this component when high-speed Quad I/O or QPI performance is required for XIP applications. It is suitable for designs needing robust hardware write protection and security register locking. Consider the 2.7V minimum supply voltage constraint compared to 1.8V devices. Verify package availability matches the SOP or WSON options listed in the order information section.

Memory IC Part Context

This part belongs to the BY25Q40BS family of 4M-bit SPI NOR Flash memories. It shares core architectural features with other models in the series but is distinguished by its specific voltage range and interface capabilities. The family supports various packages including SOP and WSON, catering to different PCB layout constraints while maintaining consistent electrical performance characteristics.

Memory IC Replacement Considerations

BY25Q40GWTIG(T)