BY25Q40BSTIG(R)

Memory IC Overview

The BY25Q40BSTIG(R) is a 4M-bit Serial Peripheral Interface (SPI) NOR Flash memory manufactured by BYTe Semiconductor. It supports Standard, Dual, Quad SPI, and Quad Peripheral Interface (QPI) modes. The device operates on a single supply voltage ranging from 2.7V to 3.6V. Key performance metrics include a Normal Read clock rate of 55MHz and Fast Read up to 108MHz with a 30pF load. Data transfer speeds reach 216Mbits/s in Dual I/O mode and 432Mbits/s in Quad I/O mode. Typical program/erase times are 0.6ms for page programming, 50ms for sector erasing, and 4s for chip erasing. It features flexible architecture with 4KB sectors and 32/64KB blocks.

Memory IC Feature Summary

• Supports multiple interface modes including Standard, Dual, Quad SPI, and QPI for flexible system integration.
• Enables Execute In Place (XIP) operation with continuous read capabilities using wrap functions.
• Provides comprehensive write protection via software commands, hardware /WP pin control, and One-Time Programmable (OTP) security registers.
• Includes programmable block protection mechanisms allowing selective locking of memory sectors or blocks.

Memory IC Applications

• Embedded systems requiring non-volatile code storage
• Consumer electronics firmware storage
• Industrial control system data logging
• IoT devices needing low-power persistent memory

Memory IC Procurement Notes

Verify the specific package variant (SOP8 or WSON) corresponding to the suffix 'BSTIG' against the manufacturer's official ordering information sheet. Confirm temperature grade requirements match the datasheet specifications for commercial or industrial ranges. Ensure compatibility with host controller SPI/QPI signaling levels before 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 operating range for power supply design. Evaluate the need for hardware write protection if system security is critical. Verify that the 4M-bit capacity aligns with application storage needs without excessive over-provisioning.

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 variants in the series but differs in packaging and potentially thermal characteristics based on the specific suffix designation. The family supports uniform sector and block erase structures for consistent management.

Memory IC Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Cross-referencing with other manufacturers requires independent verification of electrical parameters, pinout compatibility, and command set adherence.