BY25Q40AWTIG(R)

Memory IC Overview

The BY25Q40AW is a 4M-bit SPI NOR Flash memory designed for code shadowing and data storage. It supports Standard, Dual, and Quad SPI interfaces with read clock rates up to 85MHz. The device operates on a single supply voltage ranging from 1.65V to 3.6V. Key electrical parameters include a maximum active current of 3mA and a power-down current of 0.6uA. Program/Erase endurance is rated at 10k cycles with 20-year data retention.

Memory IC Feature Summary

• Supports Standard, Dual, and Quad SPI modes with software reset capability
• Features flexible erase architecture with 4KB sectors and 32/64KB blocks
• Includes hardware and software write protection with security registers
• Operates within commercial and industrial temperature ranges

Memory IC Applications

• Code shadowing into embedded or external RAM
• General-purpose data storage applications
• High-volume consumer electronics devices

Memory IC Procurement Notes

Verify the specific package variant (SOP-8, TSSOP-8, or USON-8) required for your design against the ordering information section of the datasheet. Confirm that the voltage range and temperature grade meet your system specifications before finalizing procurement.

Memory IC Selection Notes

Select this component when a 4M-bit capacity is required with low-voltage operation down to 1.65V. Ensure the host controller supports the desired SPI mode (Standard, Dual, or Quad) to utilize the specified read speeds. Consider the 10k cycle endurance rating for write-intensive applications.

Memory IC Part Context

This part belongs to the BY25Q40 series of SPI NOR Flash memories manufactured by BYTe Semiconductor. It shares architectural similarities with other models in the family but is distinguished by its specific 4M-bit density and voltage operating range.

Memory IC Replacement Considerations

Public confirmed substitute part numbers: None identified in source material.