BY25Q40BSTJG(R)

Memory IC Overview

The BY25Q40BSTJG(R) 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 data transfer rates up to 432 Mbits/s. The device operates on a single supply voltage ranging from 2.7V to 3.6V. Key performance metrics include a typical page program time of 0.6ms, sector erase time of 50ms, block erase time of 0.15s or 0.25s, and chip erase time of 4s. It features flexible architecture with 4KB sectors and 32/64KB blocks, low power consumption with 20mA active current, and robust write protection mechanisms.

Memory IC Feature Summary

• Supports multiple interface modes including Standard, Dual, Quad SPI, and QPI for high-speed data transfer
• Provides flexible memory architecture with uniform 4KB sectors and 32/64KB blocks
• Includes comprehensive software and hardware write protection with security registers
• Features low power consumption with dedicated hold and deep power-down modes

Memory IC Applications

• Execute In Place (XIP) applications requiring continuous read operations
• Embedded systems needing non-volatile code storage
• Industrial control systems operating in commercial or industrial temperature ranges
• Consumer electronics utilizing serial flash for firmware storage

Memory IC Procurement Notes

Verify the specific package variant required, as the datasheet lists SOP8 and WSON options. Confirm the temperature grade matches the application needs, noting the availability of Commercial, Industrial (-40C to +85C), and Extended Industrial (-40C to +105C) versions. Ensure the ordering suffix aligns with the desired packaging and environmental specifications before finalizing procurement.

Memory IC Selection Notes

Select this component when high-speed Quad I/O or QPI access is required for code execution. Consider the 2.7V-3.6V supply range compatibility with the host system. Evaluate the need for hardware write protection via the /WP pin versus software-based protection. Check if the specific temperature rating (Commercial vs. Industrial) meets the operational environment requirements.

Memory IC Part Context

This part belongs to the BY25Q40BS series of 4M-bit SPI NOR Flash memories. The series is characterized by its support for advanced interface protocols like QPI and Quad SPI, enabling faster data throughput compared to standard SPI devices. It is designed for applications requiring reliable non-volatile storage with flexible protection schemes and low power operation.

Memory IC Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.